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 0x97f63079805cc952b3456282e569eb5ff28eedcedfccf79601a763230515f0a9. 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/878a2a6d-736b-4238-8348-1c6519849993.json and https://artists.proofprofile.net/proofs/artist/878a2a6d-736b-4238-8348-1c6519849993.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 0x55ee5678a3e06ebd73f2277adac15f209883126df98fa8c4a6c56c2f78f0929b. 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/CH6541864187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd68e620a44e1faf89dd7fed2c3cb6dd7950a93d86f85217677981ae65ba192. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:22Z), 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/CH6541864190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf730fdd2c8efa5f49a026405819a02b9f628b20f52253a82b3b3e7ee20125c54. 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/CH6541864192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a480657cedefd4b5576356112a2be6a40e4820593d3985b1743a8b97dd4f7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CH6541874270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d082429764b01f42c581fa87321424c85eb87af81a872654480d3fddc6f200e. 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/CH6541874272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e94f25022280e597a8d7c7363ee8adc6b0b6b606867abc47e5851f8a29be61. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH6541874275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5cfc4651f5730ced0256b83432dcc17e1dde07d382156dc2bcaa83341d8e4d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH6541874733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409592975bca7b66f19c756fb8b5dcbec1477f8c46e156f4ffd1a509e73e2f43. 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/CH6541874772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621f590fd0a28a067c04603f8831e36a4c75aaf810c8c8c8a0248e37d155331. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:27Z), 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/CH6541874775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca7ae7864641b41ba15f29e9fd14a9f095c1d8c09b66e0f0202b893dfbde1f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CH6541875098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f18f16be68d8b9fa8e691e9f28622fc1a1d98646d9f84092e39ccbf141a6729. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:07Z), 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/CH6541875066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48a10101e352710e59762c5919c81a6cdf49de45e48e331ed2be43253d383d0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/CH6541875067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393ac83b88e5cd00748b22a49bd040676c97f059e13f85967361f0840ef80cac. 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/CH6541875068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a7b1616fbd3100bc6e5531801c8c94e53390401c8a98da5889ca3962fc55d4. 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/CH6541875069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec408dc685aa205f892757f3e2a3db79c3f6c558b3550ef424c8f36aed6124d. 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/CH6541875070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c2fca075f45eb371e26e27c557e9b099314053d3468b340a8783129f1dda6d. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/CH6541887926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802bb64c0bd7422ca3967fe1f562c71b9e79088c8980c8d14c573fc86672358a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CH6541887928.