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 0xb70bcec90dd6062e6a85ebf83d2bbc0e1765dac91971b229e371d4bf5ab991a7. 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/9cb62f9d-e48c-4655-8f5f-f622095f033d.json and https://artists.proofprofile.net/proofs/artist/9cb62f9d-e48c-4655-8f5f-f622095f033d.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 0x5b2fd3d78fce6d294b1a4ca298012260938353622c1a81aaa8f8fde26f33f474. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZN82426460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7f625acee33fcea6eeca2a2b109e9e681519de0f87b83738d534736c52976. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEZN82426431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd34d6da35af98e7e5520f0489eebb0a1aa644a8be700cc03b1a829fc45eef. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:28Z), 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/DEZN82426417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7401796ba36f264c0739edd1156701f63cc0986c62fc1ca79f84ca707afc08ea. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZN82426470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf30d5c097228b8f3f0be006480b2ffaf7cc9ad599675142721d0d17ffae4d. 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/DEZN82426467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288e5dba89b2801c503e78e48a3a95441696ab3913295593233c4d9fffbcfb07. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZN82426422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185b210c19aca9001850816dcdcf88fc137cc902a63950f5182bcbe96698973. 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/DEZN82426415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2dcfd0b97d75f345d34dcd0cb52c5114e30cb52470cc62f5d989ebc7aa0bfe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZN82426458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc4ee23a0062fecba3db7030c3245714680d8ffb287d0c718c9b4417680506b. 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/DEZN82426432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82410482e9cb559b15836905607b6deec24843797511aca768356f8206d1712b. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEZN82426427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1505eaf52f1f1f3fe83205a5e5f84585fec85e0a1aed6233e334e8449c70be15. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82426419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a85ca9291cc321f102e563a77773db0499fc06841d38b5be64d6b6ac88c3a4. 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/DEZN82426414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e04014325c7ebf29de814078a3a41d0d99371b33f548244ea200d5dc39504. 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/DEZN82426423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc908092c6d07761aa8cfb22b675d7fbdcc096dc394ed372fd1b4622d52586e87. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZN82426474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b1495f9aecccf2d810253dde2db50b88517701db0a751d627c3ff05a298b17. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:32:42Z), 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/DEZN82426463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533306c54b239e2fc782f5fc51189b10b6acea6982134f5c26b8ad7c092568f8. 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/DEZN82426464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803417f89048823513718ede100206778db72e366bfd082d64df89b7371a1484. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82426420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d88e0fd88fbc63c4a5ca84e58675cad42c0d9595efb8b00ea9715a50044aa2c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEZN82426412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9245262dc409d87dc30a4b4bc3570a62f0041b7abade1e7c68ed8d7e8eb6df. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEZN82426430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa9827201dc55c3fe6dc49c8c1f7047ee5d10f7c79f122ad63d9d7f0b39c44. 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/DEZN82426421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a269cc07c21f0c13e9d71c6390fbb24d2ca0f631aa166e19cfee3df6f17b831. 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/DEZN82426472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87538e36e22d570c62cbe471793469ce714540553cfefaf0b3ce2f5e843bc42. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEZN82426426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb036f100e580cb3f8bd038f3f9ddf0066e8381d3ac920fd3ef8bd67e2b1c402f. 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/DEZN82426416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace7be31b94cd274f64a5d8ae006fa513c3715c83ea200f4c8f3a3fc29092444. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZN82426411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6063ecf1283b6aad318beb3e4339b64235ebc620a343a80dd51d7891a97fe405. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEZN82426471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85179a31212d79e977f2452a2cf2a2ef89b3737fa1a55fed9c2f4127be2f9c9. 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/DEZN82426459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba72dba66b7bc9dcd817a49f48d9a1e0ccd23cbc9b3d3f04194ee2d045d23de9. 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/DEZN82426461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef477e2412686704f6813710cd6bcdb88a6a98fa29ea356c1a17ac376216e1. 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/DEZN82426466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd3e705bcb7e28f8fbf3f5d03a0c3c6dd7e0658e4d963909b0c6e5bec960076. 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/DEZN82426465.