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 0x22962b0daaf21a76ef6c00187324b0f0c1d10d31d315bd869b0d1485632b0d2e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9e4a16b-0def-407e-b7ae-7acd0b3e0dd2.json and https://artists.proofprofile.net/proofs/artist/a9e4a16b-0def-407e-b7ae-7acd0b3e0dd2.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 0x62b28bab084cf665c7550b071db4b0d84d9268a569f09f969d1a53526a3150ed. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22462445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96e46846437c4ce97b7c5661b273ff23c6d671cbbf4500ace9da4e9c715e0d1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22462451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde22a95bec531de69fe6573db60dc682a8970c82b664e18a46cc7641c58c0ff. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22462321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33031265c2880d1f702b7310cda2160156af6ce4d69f679e1d982bd5ff09da8c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKXN22462452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c6ef1a5768f7590b978e2e7f5c82fc0a4452921faa3fcb7e56a9b15df78ade. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22462425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0a6df2e7021ca45995011552616fd1cdc13f92ce2b8945aa8dc424f2d5410a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22462322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972d0f8a040bede1f0daf79c840d402cd581eccec85464984e5cdc684b270e5f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:14Z), 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/UKXN22462418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a7486b1f73f9373cfe0d2ff8bcd6987d72a120f6aaaf94c6816e87cc10cd5. 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/UKXN22477313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d44e3144a9008ca604e0ce79280f29f2aab2667a14a7fc3e1e88d70a85108e6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKXN22477348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf925380cbdd5628b3425e09aa49c412ffb28d7f33964ec9af4560073000420b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22477318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c6af657f5f411096af3fe28af11ebec6f50d9a1f3556fa3e1521a52cf2e43c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2446415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ceab554bf1cb437a866ff13ffea9dc8ddaf39f31ec56ba4a45d7ffcb2c2c0. 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/GX53U2446417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fff7056f5797bb1518f09e906336803c9589b5a578b918e51cb94d29758f6c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX53U2446414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecc6e6066c06d52e567b54c1e492578ebfad0d8e140ab5893a20f65aba71da. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:06Z), 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/GXF9Q2408696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5603447efe220b1e79b4f7e25072ed3b8d9929cf17375ddfa37dde90929345b0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GXF9Q2408743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555000296afcfe68da3f2c69330371fa1f2e3c5c2064b92557b5a18fd51a0660. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GXF9Q2490027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8e547bad63ecaba12e9d3e125c068117594568e2435d07b9ae5f938295a15. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:38Z), 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/GXF9Q2490064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f56ba4cb51f90716618f3ae2159d45407bcf3ae85e5ca9e6e04297986be65. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GXF9Q2489903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095d81d393773ee1bf38c703c5651e113f4bda9d0f573dc6b862172d617486bc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXF9Q2489901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec4c379a947f73769bb48241eb8ec6a4434c2f9fac16a1b05c8e4953ecee865. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:09:23Z), 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/GXF9Q2509945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9878a293baba5b4d54efc47fe5d8acff9a0ba855284e35a378038bd4f42cd867. 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/UKXN22518247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279296fd5502af10fc19137a5a72d059f5233ff4ce6bf3ad28b22e2b3a5ee67. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:20Z), 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/UKXN22518249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33c912b1ff4a2c4f131f5d9980daa96314f8869681e9b6706ad0b3f12b4588b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/UKXN22518251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549e92a3f3379bd5c56f8cf721747a841662096575357f608ca4a3b00c099689. 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/UKXN22518252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c109ba4fb6f9c8d7a2ece22b471dde3853b37a62dfb425160255573b7e76bb. 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/UKXN22518255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a3cc9ff9e1d90d1e85f1001b4a87f7a22f5109079ad69e7b024aedf9cd4ee. 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/GXHAF2528834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3d9b01451e65bb0acacf941baf317820b96e5be62eae31cf628aa5e38be9b2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:22Z), 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/GXHAF2528835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa477b82c2c3bd0d34fcd08da4d18fd3e80660fc39810befa70a94db765862238. 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/GXHAF2528836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b14c93696feec0cd860a1119895e1848efc8c39acccc22074074697c52be1e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:34:25Z), 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/GXHAF2528837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4200821f712f013d473a1de76c9dbd8b3b09845a4c668e8a41ea338617ecf4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GXHAF2528838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52cece490185583c74b76d549e59598b74cff3fad0e3ab8493d36e3a7c6f202. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHAF2528839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970f039db47c7ec64c8b2271fca94f963e4c9212bc2d4ebff4d32d698185da87. 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/GXHAF2528840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6cf8eba9c977bf9105ee0249661a5a90cd055b9d9bbb3e9279bd4f2b43c05d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GXHAF2528841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52172d7b7eaa165c0f83ac5f3cb5efc8ec638abd165b6928e607b847669615c0. 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/GXHAF2528842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5891d19823f8649b45a7a10cef5d3ea6cb2e5a84efbf94bfb48ee3f09b11441e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GXHAF2528844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b037a44a35c011271b340b1ae1bd2ab04c3776eefe295dda7d07141a2bd2ec. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GXHAF2528845.