1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7aa51292c3897b0b4a13a6648a566fce253641ae1406352ab3f6680ae32255. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c11a34cc-4b9c-41d1-9a27-fbbc52b4d492.json and https://artists.proofprofile.net/proofs/artist/c11a34cc-4b9c-41d1-9a27-fbbc52b4d492.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df993598cf1dfa76c359e3804254df490abe3e83dde6c686f5948d649d5a5a7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5089800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ebb314993924ab2cb90b6d741b788e5108b12d2f6dffb4a7b34e8de1475dc5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b64a2e6a6cf5e2af9cfc9f77d0634cc771073354491d46ef8a12bb6f2f4de5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01f4e4fb9177c541b41ba102e70f79ba38ea1ce3d839b387dcb695269edaa74. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb7407b097a37bc746befd9a6d267b17eedecce802e9e179bcf5a0ca3152a2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c50c205a8b46625b0aeea98ced6a4e00623469bdb908650f18dc06ac149e7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcf390cdf0d9612837e36c72f5854e3ad4a6b5a62f5fa98982521e61e2333fb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885fdb121769734e2aba4cb5da8a4d4a3fddd365f924d32d945ece077dd204f2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0aead0adc5f30282143452b8aac4f9bc4478f7404fb23dc58273e59bc6b83. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe321fc2f2ecfaaf55f52d6f267ccca3b4a2383aca50cadb8fb0dea202bb984c8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21177b4d0cef25fba920b25eab009ff7e578054cf82d82fae4468afba8c86b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c372365ddfbd07a14346d8cad2eeb91cef88409c3c5e9218ecd16a384ec831f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9133582958fada9f9184449cbb1f48b355962ea7dfde0553bdd1510af44246a7. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119201625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c260b1482160dc17d590c4c20bb4c9c5090ca10dd889853e042bed6417daea7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac10a46c6a6eab85ac3c65321eacf7be5038dc67539b266b8b7d4ae0ec79ff5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0e711f78fd7b86e58984a700a83b9a0f01db1e0592941285824844d3a37846. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:38:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110404983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd6ca4ae0469f5d6d65c8698b60dd2f72519e339f7ab38eb1bf731f9a9ceea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110204414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7db19677a11a076ce814f23653a9d506d45962d83b555046e6db2e461fc64. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110002848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bce49750ae5aa2aa07543fb9b66dd29ca692db03a198d48e2b3fd9ce27ad6d2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac10a46c6a6eab85ac3c65321eacf7be5038dc67539b266b8b7d4ae0ec79ff5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d146ba638a0e0f1af4a9b0aacf8fde2180584c90cc2d84e99dd4c7ea1bb5cc4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c28c2623da3250ffdc2f328f6970659ce6f4c581000278e6a4b42317a3e695. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53eb8bc786571ec9095d415ac84734d21f48a4b6778062dc5b085f10aea2c6e. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fe02ac6fec1e2637dceb1f6182ceafe0b7fc6ec118204e8dfeef4963760ac. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110002602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c78e6f04b4be1126b0783aa6114e7c50baca4bfe3a9bd17eb4a368c423513d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110002612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7282a2bdd0ef72a7edc847440a503738cff19c0011228ebd381d3c6916ab9583. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244857b18e2f89b73cab3688fd08f75c57568a50bd6ac7e34fe88ea5aa30bf17. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5118800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead51a8d97799db084742515f1e244a5f8b2dfc43daf2f52e8ed1a9390a59d41. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119901650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53eb8bc786571ec9095d415ac84734d21f48a4b6778062dc5b085f10aea2c6e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c372365ddfbd07a14346d8cad2eeb91cef88409c3c5e9218ecd16a384ec831f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0dcc204649f55aa96967f5a89b762168ff11ed1a9ffecd500096425d982161. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbf20ed78ca3a20257befb255e73e5e8d6d1b753f28d2801e7548b36a9ec406. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7e8e4517bfa9506734dfd6be5b03796af5b00fc82e32f961ace1d2ce48431. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110304617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa2c149087bd45266654f2a8c2fc6941304d154692ddea6c994c66f817c4148. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110304612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972204ad0b0dcabc484c61cbc1f940599ee3226f3cbbbc7d96653571c0144bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5080600135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8d765059217266bf8ca0607605d03294c4b233bf056a170a9f021ae4df79bb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5080600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a3e748b51d4eb7bdb3c55fae2bc89bb83ac0597fae8d43e9fe43288acc5d2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110404988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d146ba638a0e0f1af4a9b0aacf8fde2180584c90cc2d84e99dd4c7ea1bb5cc4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7db19677a11a076ce814f23653a9d506d45962d83b555046e6db2e461fc64. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110002848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fb238f0e245dd53498d1c86a75f932af3b0898230dd156700dff3eed1e245d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eeae36b35c59f151296e3d65a7fbeb23ab9fb6cf207e7003772eba1df3a40a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110304613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7b0441fa2e68bde30e76c3b8e8982270a0072a56fd664518468e015a90aba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119901651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37f203af5e18b21682b3432efe2b3665ff9c5839f25e5298d2ef322ac25c74. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110002609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9db616cba87709f9e19181efd37f4197bde7fe3bb0e3225797830de42b7b94. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d96287093976fe14ca7bddb39984d6c905e6d7c84734238053e3dc55ae284f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119800987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaf9730986fb28d5149668bd7d956f3bc6c0c966ffcc9616a8c38c84a5c70e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110404984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7282a2bdd0ef72a7edc847440a503738cff19c0011228ebd381d3c6916ab9583. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c53c86d15b5e77fc212a38f5b691a98f5eff2ce17d47d8fd284c484b41d430. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G1818330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182cdd6042976caf4028e243109c302090732d18e9dbd0565f18a32d7121733a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94B2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ed0ac08b56ffbb61330219fd785c72395fa803a9039d6d1275bbaaa6e3f2b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94B2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad9303bdc95fce2e546a10ce31696ff27eab7c84552215d63c42f113463fe99. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94B2000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d340541c5d542ad709c1cb3f32e464df392605450962a754d198a96bfef0c4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94B2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361ce97f6f3720ecd833a86276400d5a3245b7db54aed9fc6a204718174afc0b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES94B2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb5bec28ac8a68ee59147f985e943005dff122999019a174a67473a42f2c766. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5080600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89faba723bb3fe0609c84d0f0373ba8526e567a8494274d7e89b2b3b0c38d115. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5088402317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9950bf9aa5a396bd15089b67bb4d872afcf868e60de3eb045ed19e6a6752a0b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5119000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f61d271123dec9b5493a73593fdb4e8692398f484358b6075803f9bdd36a58. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF149100314.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f04fdf7a675be51d0e57344f498fcc855ab628ccaed56201ab247f1e2bb847. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5080600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1920e7101ea3d6f74eb6657753ed26e70992daa98b75771e0c9fb4ac7abe71. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5088402319.