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 0xe7b3ea66b8a5445a04e74d58beca038b84fc9da3125ad33614c29a13b2927f35. 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/37b00467-3fac-4f5f-987b-9de3ebf8f7d0.json and https://artists.proofprofile.net/proofs/artist/37b00467-3fac-4f5f-987b-9de3ebf8f7d0.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 0xfb260c5ef450d8763fb20fe2e90f2753b5765afa4c5e66ca0b9a996615fcd056. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:40Z), 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/QZES81860470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a25a78ea8ad8b71069aa58f73e1566d180b40457f371d77cf982b677583f37. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:49Z), 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/QZFZ41914304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2a1f7928f66d2edc5216f86062fc7d82b06754e14398a10d40ffbaf3cc0449. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMFME1929910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1197fb00ace236b3602f28d372f35c5b351035605438f74f128eec57d89f5f70. 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/GBENL2103015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b59600b84cf50ce43fb58147641b8e22ab1647163b49b5fc60da4bc3faa05. 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/QMDA62307582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed70151f8889e1be752d39b13c77db7efaa1f3409fcc0a164598a16e9fd0310. 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/QMDA62395906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78e189c927174805f6298f43a03b5b41a8da4591b99fccf66028cf467487f8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMFMF2355109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2bd14aab0376c294b0dba5bb916ca292db30aa3ab833e76b904e2c43b934f6. 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/QZJ842401497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4177f2726657e486c4ee28ed72598a374f4a3c31423be987796f5ef094973f0. 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/QZJ842403154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f4e1babe2e70373a924b3753e751b6e28ad6d5b0bbd98f949d9a86acbd4ff. 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/QZJ842404044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd451e86fcdfe4137b8bbd72f53a3c67751dfe879152d3b61e851ac2af596be31. 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/QZJ842404045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec81b1dc9bdfd88ebcf0b7693c5aaa322abc873dc74d089406e8c8be58dcb79. 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/QZJ842404047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb851c281317bf5d0d522bf254602684f1aae5b7e92e786301a2e89d2f808ab. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZJ842501560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac634d2923d1941b32b518fdd06a3151e57489beb92a4c5b7eedb70c8fd5ded9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZJ842501650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac634d2923d1941b32b518fdd06a3151e57489beb92a4c5b7eedb70c8fd5ded9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:31Z), 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/QZJ842501650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcced191b2cedf0eb6c374ea3645f30ac0c163c63155e18db773f8784f49e66. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:49Z), 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/QZJ842501857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8c9a8aa36376587c9cad9083940b9e19a658c1bf8aa443cb8c5a052591d14. 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/QZJ842502075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c447314ddcb185e9281320502e77ae31960a7599ff5af29948d2a6ba47d4cb1. 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/QMDA62307645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c447314ddcb185e9281320502e77ae31960a7599ff5af29948d2a6ba47d4cb1. 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/QMDA62307645.