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 0x85265bdc2d04282cc8673713d124bdfcc71cc0fb0d9b8ab6b99a974612d167a9. 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/7ffbfd9b-7d69-4cac-94dc-359b0b6128cf.json and https://artists.proofprofile.net/proofs/artist/7ffbfd9b-7d69-4cac-94dc-359b0b6128cf.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 0xdbce0ba4ed9b7b70ef6595f32addaa76b454094ec925e023407900b4fdccb097. 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/TCAAS1059508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a4a5b0934d44311dbbf3b01f0789cca45e7b979688be7a8295f14fc3f37240. 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/TCAAS1059511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be1def048f743ff2306c2a9f43116a88487634c42de2b39b7fc2ee3c9360c3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:53Z), 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/TCAAS1059533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf897af2a3332c2edce710bd1b9f7c04b3e249752f9eb90c5fff4e880e80e9290. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:56Z), 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/TCAAS1059535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2c4f3c12448f92745d19462c8fd132a4083a023786c6144e30b0aed951967d. 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/TCAAS1059537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8779ff3263d04bd417b395683b7c77d6f3b541347f88b72910f0ea86480c4e2. 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/TCAAS1059539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe790d4bf1aa8740acb34637bbb8c1f2d15ff395b7d08fc3cf7a68914f7fc19a4. 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/TCABG1269546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad8baa4525a5fb21f11a7d5508a418373583724298e390f40ce58a31fe21600. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCABG1269547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8758af2ff9a620577c7c1380f284801b1a49bfc35888091e49c7373a29d04d. 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/TCABG1269550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d18b35d28b5c86a0bd928ac06160a226c839abd59c1f25914fbd171bd2cd96. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCABG1269551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db35b311194fcf4ae03e828cf39839d687aadeb6a421e80b502f5c169cbbe8e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCABG1269552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3f7d6ebda4b67495e4bbd7062b03e014233fffb71380d1abd644ae47b0107. 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/TCABG1269554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e80e55b1cbfef06a790b72821a3d5c73c9e83cbd00a8f82a6d622a573bc317. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:36Z), 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/TCABW1408063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4da4e969c63f41a8e2281c470f5af52e42827bf8da5e9db54c0a9fe69cb1e4. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCACZ1742626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7020bb15bf215b3b38c557f2957d779d9378efd34ddbf487fda9d8990c93ffbf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAEA1804836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742dd278a39bce163e8bd7fd1d73108dc5586b200347385e8cae0ba0178e4bf9. 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/TCAFA2080595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43911c4af89218f8e4f299257d850f915b07be8d60ef698442d3fa40cc8b3cad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:22Z), 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/TCAFM2199760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1511437ad752bcd9c9e08ba0b5844f82a26031e10b6e9af0ee4120403781f50. 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/TCAFW2131632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f718e2509479c722fb0e7599ac53300389a7aaabb9f63dd15760efbe707e8a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHD2307106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445b333c025cf982f639323870e893e3db24d81b79d93238cf81091bd655d269. 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/TCAHD2307408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f718e2509479c722fb0e7599ac53300389a7aaabb9f63dd15760efbe707e8a1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHD2307106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd6b6eaad20eeb3c1a7f78acb455ec9ddad0c70ccede82283a213a08b60008. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAHD2307312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445b333c025cf982f639323870e893e3db24d81b79d93238cf81091bd655d269. 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/TCAHD2307408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454efed9994d7cccafbb80f164b2fe509936d0ce026b153a04c605172998ef99. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAHD2307641.