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 0x860e73d940a854a8d7a62c809856dab4b9a710420b59bca8dcd1da57eb574b72. 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/9fa1c3ce-22d7-447c-bff7-2632b72d4e9c.json and https://artists.proofprofile.net/proofs/artist/9fa1c3ce-22d7-447c-bff7-2632b72d4e9c.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 0x150a5a1b3a917acf9e3c5915bb68d1406cb840b530d7a6b002772ff8701a9b71. 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/GX8KD2414110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a604b2f0b94cfd0f5d3d9202bc5c4972197ba10594fb7aa98274157e90ef6e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/IELOI2294121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7110b946ffec8fc48bc7617bebbeb4bf317c66d59a47029cb566e83db9baa86. 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/IELOI2294122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbed3c1ea276653bd27f627131416221fb8d8703374043e10ce2941dadc27c1. 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/QZMEM2085605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95df4a5827642a0e5be54289dc2a964866a85674f00c9b47e02eebfff6f3d690. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEM2085607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d563f90e9eb79c3c17bf13a864feb0fe2a7fed7c9230e41e9888095d29a763. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEM2085608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17323af651b6578a2d932999302dd690e9313982d62758f9bcd79a0a4113c55d. 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/QZMEM2085609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a15f82497f8ef116db083ab7cda6aea02015ab13c0255b8525f22caa69bf687. 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/QZMEM2085610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5ead7482d95cc1cfead1a99a70077a32e182676a88c82a2361548f9f8a9bd. 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/QZMEM2085611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8d685cb0c3b09438ef0ae1ad0b5cc65eaf14e95a41e16a4e664ac3194d0596. 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/QZMEM2085612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab2b0e4c02cba2b20215fbb03fd83ab97d80ed0472baf743908f8b531e3c86d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEM2085615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4e21840b85e727af252d367b5974abeaca2ace51f5ebe1ec0dfdab57502d4d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMEM2085616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e076e931699ce163a9d6839c5e1050148a5fc03e875d811f55650c7226f0bcc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMEM2085617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a851278e156831352d4c2d26d0646fc0bdb2b748a49a49e5888682810d3a8b. 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/QZMEM2085619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7859f5a89ab7b044386482d34291d84709bb8e555944c8602929c34bd4a01da. 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/QZMEM2085620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabe2e87d77b39f1c3aba0cbe4830fae66954b16f9425b59fa1a21b343bb256. 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/GX53U2057908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b98e49d696535c75fe9f3bc7cb8d7d66c435df280caf973fd7ac049d81775d. 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/GX53U2057912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9adc09f563d094d481441a2a053f0120c401ffb25bb02ee908f8f800fd25de5. 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/GX53U2057913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b573bda9bcfa3c8de0efbcc88fc87a6a2714c580ce95c147ef15668dc5fc46f. 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/GX53U2057915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e42acb1995bc6b4e83047b38dd64760e9d2aaeda757894a865851c1ff582869. 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/GX53U2057919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f3bff137a5b824e89c3331bbbc04d65b8f3f12fa20185e2829d3ec9da2508. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX53U2057921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eba9da292cc4590f87dc1286da35700b7eb6ca8e1e1f36b6fc91f35f10644f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:38Z), 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/QZNWV2244118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee62056a9a32f8eb0a860d6a550068b458b90fa70d1204d91d583aad5d2aeb4. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZNWV2244119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d69a66cbaa892b699c9d4b137fc8fd491e7927725d709d8f27c6859afe17e43. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWV2244121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f9e6986e75579636bea5835bc897686975ce1931445226cb2d604d596c64e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:45:42Z), 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/QZNWV2244126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709e456d6c2d2e2fe2ca280c9bf1130f1d50464110497491284931eae39766bb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWV2244134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f75e1930545ccf311fad091d1c0ab29fa199a5268c5a9977d1f10d53521dae. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:35Z), 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/QZNWV2244141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168f19e9066915b2e4da69252e922dbe4dd3fbc2b19603b9f81bc8b91248340. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN42399113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc514bb624504d58ab4998cf9b1652dbd99943ecc1b83787377d704ebaa413400. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN42399116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10570ef523efffb582806c7673e4de288a5f9babae797e0f9d65c87f7a4d7700. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN42399126.