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 0x7e2e489c9f769b02ffa19de1db48361d7709f1dc6e67bde717fcfe66dae534cf. 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/747fef62-a609-483c-a62c-63925d4e0e3a.json and https://artists.proofprofile.net/proofs/artist/747fef62-a609-483c-a62c-63925d4e0e3a.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 0x5ebf7266e4ef6f111ab47c24600b97fe851b5eedf40cc1d7a617319c5d9feb5e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:20Z), 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/DEA372009114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2062dfbaefc81c9804d59a5cb49e58dc54a591c735a272bb2522ef7cf15ed7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEA372009116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0222f6aedfb2a0681ad6ed9f4b17a132b1c53152d8868f2a815660b5e2c5a920. 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/DEA372009117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fca36dd5692273c80d0cbcb6d9c4518160691a14a0a79208ae3d69b2b66499a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEA372009120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f292507e08a108e0d41a7a38a4be7f28a87ac39f75662547a812db4867f057. 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/DEA372009121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dda3a113cf920f11008f757d72cf2f00e009724675e641133829e5706826be. 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/DEA372009124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c61b8047a4331a931a6284128f943dce04f8d4532ee67cc346b14a0c108a3a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM6N21446699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3983c3997be99025f14f0b7dfe63d9fa6360a3af7af61c7b9f455a36d349fa20. 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/QM6N21446704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba461c7b20b9812dd27487732bdc2238dc8a395d7c853fd9280f5969362cd34. 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/QM4TW1594645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c1a0abd9ab0ab84f58a6fc2d62e9d86dd53f43924696338a680e87c61f3d0f. 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/QM4TW1594647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c440d346eb3af6ba1dce304b5a52a61ea3020a09921bafde38c8c5e4fde02. 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/QM4TW1594648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84726280ce9d2c42def021368bb739bd08e959385f1326c48a72b8587cf3b94. 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/QM4TW1594650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949b3c6cff182704af434856e924fbf54caddb1c1ebabf05b6434dc3a591bb20. 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/QM4TW1594652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da3b715798fccf45c9fa9ea8551f96f8157907a6a48f411cecd72e48b443142. 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/DEA372009100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c309a314cb48e99b988910f7c69a7fc39f7719becdfcf866a6297fbc29ec2d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:49Z), 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/DEA372009154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35edd9368190c682ea9513e658f26c2a0863bcc84a2296a004b86a966f2c7012. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QM4TX1727485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6204e24f44d2301df31517a9b1a7f8c4412d21b108d1cde31671871b794e2e70. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QM4TX1727486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43314c92dbaa658fad37b42007668af1971ecd7a46dc1ea00e482351651d893b. 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/QM4TX1727487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28fa7999962471148ace5bd89471028006c0510abc4024796349ea5c2b058dd. 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/DEA372009097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d86bf5b8b501320203a8574a3ad1aa047a3de289dca41d76aac1816384aa03a. 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/NLRD52041997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebf61aae1afa93df232ae47399affee3bfd7269e68244f3036f7395acb80f53. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEA372009700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842ccc25aa85d64204f3a91b4e6f69352d116168b19db777c971b05e19891f4c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEA372009704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28158a2e55125c35b8cd183234379b56060029e04103ce10392d0ad2f51fc72e. 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/DEA372009708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02a24d32bdeb5be690348f32f5531452251c99f13ef98bd57c0a9043959159e. 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/EEUL32405358.