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 0x61f3136e295aad82536088db8eb7878d2ebefb43b9663b86045033548614f78c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf3b9713-092b-4797-8c44-23ea11925ae9.json and https://artists.proofprofile.net/proofs/artist/cf3b9713-092b-4797-8c44-23ea11925ae9.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 0x84b7222f49ca1e085e5117ba9d7eccb2d8379d580f67df4098b86cc1f13176e9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEZN82436734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39394d932bcd9db0dda24f76c2b73000166203dc56cb94bee692ecc68019be5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZN82436739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ade7c456aaba32cca780a61ce5f73fb9202b16a09f477c467b847177416ed0. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:45Z), 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/DEZN82436733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff144db0058633d26f42e70ee89b18c8d466a442da545ebab0348bff2063f14. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/DEZN82436703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7674ceb5c0d155e96a267dab9af58d24148433c640a8cc65d3fb807623bd725f. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEZN82436732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6037744ef7e1165751f230ade051ed87446bc166ab7ae1d2a1f5e1be1525b5d. 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/DEZN82436737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ddeefdc1824b8c8713ada346b645f93ff5ec8f1fb3acf80e4d1ad43e0d8995. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:19Z), 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/DEZN82436705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314e0d2d3a2e44e26df07c9c55562f088ac9560e89bead21f2e8b583619a283. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEZN82436704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034914ca383dbff05ead02dfdf33c868c6b965dc332a786694b8206c76de0dc2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEZN82436738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a23f5363c9a3e9926c6307f0b3d8e41ad8bde4cd65dee09bae36c06055846. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82436736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc57bace5d687d3e58d84a0cf7dcc907f6214be1eff44c50b153f594870c4433. 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/DEZN82436700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1325eb1387f9affcaa180d973db2f45e9d610596aa07b7132cd080dd560b0d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:54:09Z), 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/DEZN82436701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11a60e35543d3fec9b97a490d5fc0ee55743a8131e73e160ccd4a1c2686a11c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEZN82436696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568de5a91320416aea47f82e1965a6e0dfaf754612b183348ed06f62b7b1d942. 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/DEZN82436706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d88e6a07e66d99d20bf6cc2de999755c5d3922e38cfba758621b2d4f2d39e03. 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/DEZN82436702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a60c338b974cc96990f2b06006e5a018d248409672a5593576ccdbbc4294b. 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/DEZN82436731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5563338b32851113fe3f97d306a7f3a17e8b3e943142342dffbe0bdf736e9e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:21Z), 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/SE6XY2542037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2a36bb07f9d9a34f10d8df5dc39b158eed17aff1e6c6109525682e8155f1d0. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE6XY2542038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bad7d84626b9343d107a32de0257ee84dd778e05ad0fd7b77cdad9f8a06bb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE6XY2542039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fd8d66bf61acede9e5397dc3a0baa51b24be71a5f3c1a4d6942f33d5adc9e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:37:14Z), 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/SE6XY2542040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907dc0b0318a4684f9f8d570f027af7121150a486ecc0814fb601cee8e6558a9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:46Z), 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/SE6XY2542041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8881260ea48ca437e3c1e55cd6279d14d1dedb8517d839abc1e59a116d4337. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6XY2542042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2dd823f2f191f693f7a010c3ab2d22fb26d46d15a57de14d637a3d110ce00. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SE6XY2542043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b477d34b19942f8189df3fcd5f7fdfa5c4673e68b39171704f97339074864cf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE6XY2542044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946867d1f6be0bc803198a219c3ba2c4e9d2099dd83c9b4e7a3fadad7c447b0f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:09Z), 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/SE6XY2542045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dffa0629d748708616772931b3b60fd21fa152d5389074e4bbb4706fec41bd6. 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/SE6XY2542046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3840f8adf3e68fe8a786a57b610b98c96db58552e80a2292e859c04696a49eec. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6XY2542047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aaad07b936bd12836a0bbc5b3c4f380d4bae81ea4f7aab0bb41f8336cdb39f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SE6XY2542048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e682832460fb60ab8c426b81e16fd1b1ae6fc0f2e937c89b607f5cf12f3f5ea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6XY2542049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d34229c1d276ed138f2273ba6ad1732b26dc7d9a9c3d11585bcf544b334cbe. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6XY2542050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60d8b8aaeb96e83bd56d7f2f7010ddbf330b80f76d5df977936d3ed3791972. 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/SE6XY2542051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22add8a7663bcbd95b4e0fb4a6e7926374d728bdd3f98014aa47d923f7a3bd1a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE6XY2542052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90311531d42be66ea839a1ccdb6d5a8ab1932dabb7e9fb90a888a454abba78cd. 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/SE6XY2542053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43fd9ea12a6ec8c8e55c8a28c8f9e53fcd13cafd16877cff200c8673d877003. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:22Z), 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/SE6XY2542054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e1d92c71e7e26f7e7d2b001ba88f559f7ae29e5cf95c626c3918e5cf804df2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE6XY2542055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b909c88dc034942403517ced9afc7d9c7bdde4fd310fd1cbfe148c2e62c62. 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/SE6XY2542056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecd098d26bd0b6229c794b1364761fa2afc0c75f5fa727cd47c4749756a7dc8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:50Z), 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/SE6XY2542057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537158b6b39d8649be3080c16b32ac932dffb0b5ae771639dba55f5c64177edd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6XY2542058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7906e0822215b29dd748a3ba98418e71682159fb1d81e0eba2bd65752dfed552. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6XY2542059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed30a861479063e85b28d25e9a41e3ba0aaa384e9f6e0ad41ca95a71598c0496. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE6XY2542061.