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 0x497def6e0a6c1ebf1063f39d8f48900cfa2f17a0bdbbaf9bf0cc93d744f2e6be. 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/f0c7de58-f002-4e8d-b0da-6aac6610acc2.json and https://artists.proofprofile.net/proofs/artist/f0c7de58-f002-4e8d-b0da-6aac6610acc2.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 0xece7499581091ffbe79ff530ad7ec965069093d98f5ccc30edf21b160bfe537a. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/TR0061600296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3b09cb3e6c70c7c0f164a703feb4af47d62b929caaa1b0b0480cf0c64c765. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:46Z), 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/TR0061600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bf2e16c913408edb6f4c70abab9c23de56a9050194aea30dbd43e011ecaedc. 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/TR0061600299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b1ec3d3c57f57b304d8191fbebd1da53acd635780bb3844def5b694af3a7b. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TR0061700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8714439e765eb28c7d570ffb0fbb0008a54ee6bf02f0df2c3be9d1ee7de7eb99. 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/TR0061700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a0b23faa564213977a68e02523952af357a04e6693b9d575b404ef45cf0928. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:47Z), 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/TR0061700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680709ce1315dcaf12fb16205e6a95ab0e60c92e6595dd73d370cdae130070e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TR0061700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ea413dbec6ac5b41a144d2701eddf3e046d29de93796c9976d4e4221220230. 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/TR0061800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b4f894ff96d6985128d3578aa0e4bb19fec0d7d0534234aa431724a3ad44c4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:12Z), 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/TR0061800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f03659d6d0dd813f63c2786840838d233550c169367ee4cc6db40760252776. 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/TR0061900169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278f35710d2cc296cf0204189a45ed3b87585c19bed3c3c37c1fdff69341be78. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0061900172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada3dde987528969239762e0a4ca67b30e3984e7d5b03852e592b11fcb3ceb7. 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/TR0061900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237456bd439bea8c83f3fcfed63981dc8dfc7f3a02ff74b43ea7f6ce39abb277. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TR0062000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a94bac219f5d2e662390eba9c05b3ade5a6dfcfef2de2114c533aaa808a56b6. 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/TR0062000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80534c8fc4526526bc35b89a374777121391d48b13a3ba39fb5afd77b3e3d06d. 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/TR0062100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da78d45d6d950467aac1e43d0f6790376edaee42dbefcf585e72480c19b6399. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:00Z), 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/TR0062100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad78efc4689fb988ad39d5e7ddceea440304aa4febb324b43e2b946046d1712. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/TR0062100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5f8053c8134db412d2c492a8317048e0b6e155314fd0ff6915a9282c623f0. 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/TR0062100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde486e58b92874c8114401500ec49da34db662da8919ef16ddcbe656f7c29644. 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/TR0062200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985e725116f6d2deefff71a784903ed92e68b79fee15d228edc3cf9f0a9868c9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TR0062200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde486e58b92874c8114401500ec49da34db662da8919ef16ddcbe656f7c29644. 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/TR0062200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50725af03cd9dc9efdde01a0ab48ce98019ef1f3a91f3513ea99723364a05bcc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0062200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5517369fd2a56b67e31dcd83eb387d7fea34b6d9b579f0cb1ff385216ea34888. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:03Z), 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/TR0062200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66453a9332500b9360f070d6a2060ab30d0a3745a7d8befcd850069ddde1645. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:34:45Z), 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/TR0062200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb182f91a98124ff5b13a0547dedb5a960246d7b12cab06aec5a52356bc0cb8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:51Z), 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/TR0062200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dadfd6bb4a6ac87ccfa22ac817b5aa4d4dfb9ff4f2cba193ee8e07f97765788. 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/TR0062200136.