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 0x9f108e6b0a8a8af5b3d9ae42370d7071949e44f3419aa1a4d961ea03222f179a. 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/bc9f9870-521d-4e20-bec5-5a0a5287b7ff.json and https://artists.proofprofile.net/proofs/artist/bc9f9870-521d-4e20-bec5-5a0a5287b7ff.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 0xa2da14aa8ee506a92aad82348bf7ce95d88c57cf34ae7d8ea00d01fedbe194d8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/MYA119800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd7695bf1c052edc795b2a911b6da84cbf357f5f216d018b067845d3053b85c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:36Z), 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/MYA110200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86cd400f61de6e47af9ab3b43682d7e29ad268a68589a33d8ed0444731902cc. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:36:40Z), 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/MYA110200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38b43ce3259ebff44d3245942525fb97d5b040bde6ac917df55b07924d8d2c8. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/MYIT11600812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b669d8bc03f3e2a699e289a4a846283969c164e4ed3c14b93e41b31aac08046. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/MYIT11600819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e7d523ef7a6257146ef2455b9ad592c4f4dc81dfca4d8190c1fc3e20b9af4. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/MYIT11600820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2fc425a6bf4aa53973aef68a9a8daedb62e2e5b3da01c4ffe74bb3273a5f5. 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/MYIT11600821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09ccf084869d1e18456dc3acdae78a5d0112467500ef465645bea258ba110a. 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/MYIT11600826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43051bff32f3f5709bc58e810b9e9c9983401275fe5cb3d62bc18c2d10d3c0c7. 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/MYIT11600827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fb9d3b7bb833c7dfe268765a7f7dbfd6d40603909c36b58f34f1e56703e9a0. 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/MYIT11600828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bf87f36d402bd93396b774c4970dba93cb5e448a9699947ad0023ca59d7806. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/MYIT11600830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd6f8739554bc518f09107f1363d8f56f4e566264e517d9e3c836f9e094c14a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MYAT12100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f357e7d0ddac8de4088092277ba8b3a7e137b73df3a9eb2fdbffcf8a62d2a7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MYA119900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a699eb1aed5dea9edb86015ab95eb047ac98776537cc7392eaab674bb4c724. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYA119900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e88a4be6902b69d72c17c5266b1d5739b50a046f890b118c42a04cfba15c0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MYA119900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc6e86972f6d3ed0d7df4973cf6e9dfe50c5190cfc9829c49e2c5e4edcd33c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA119900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb050a92cb81b863c30dfb407f0e9239e43b8374fc50a19a8f7759f986719f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYA119900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e88a4be6902b69d72c17c5266b1d5739b50a046f890b118c42a04cfba15c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYA119900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f357e7d0ddac8de4088092277ba8b3a7e137b73df3a9eb2fdbffcf8a62d2a7d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYA119900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f357e7d0ddac8de4088092277ba8b3a7e137b73df3a9eb2fdbffcf8a62d2a7d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MYA119900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a699eb1aed5dea9edb86015ab95eb047ac98776537cc7392eaab674bb4c724. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYA119900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc6e86972f6d3ed0d7df4973cf6e9dfe50c5190cfc9829c49e2c5e4edcd33c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYA119900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb050a92cb81b863c30dfb407f0e9239e43b8374fc50a19a8f7759f986719f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA119900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88498ba6a117cf09fbdccc480d5616d08a0d270e3742a04543e74f808a880ead. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYIT11601052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88498ba6a117cf09fbdccc480d5616d08a0d270e3742a04543e74f808a880ead. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYIT11601052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58890c81eb425bc9fa209f6e2ffe7ff346d14ed4430865c9e4d9b3b0294a896a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/MYIT11601053.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ccdb1debe5c50c4f417d293340aa321718c76089542c9efa4810c893407d64. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/MYIT11600813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c4e25dbff28a392b8b51765674436ad24aa80fe0768ef9c3549a17c56661bd. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCACC1490911.