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 0x27c64a0e66f32ad206068ec956d5a245a2291a89c3a86f13471d00817a8650e6. 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/08693cad-360e-45fb-a9f2-4c8b49a0de2c.json and https://artists.proofprofile.net/proofs/artist/08693cad-360e-45fb-a9f2-4c8b49a0de2c.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 0x47cefe3774ed9c409c2fff595cc718a29b95358a07e843bbe63726ae0de1a748. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IEAAO1600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6d62dda4449fbf13a1f6a0251b141b768958656f5d3b4df0e646399186f422. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/IEAAO1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40630c1c636f767c728ce73a00a0b1af0e9ec13266b0325c2544a29ec519748f. 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/IEAAO1600036.
Celtic Woman Presents: Walking In The Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f0ff6f230637431eb2dd683ccf216a08b95b2610173ce17e5efbc714e8b39. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USAKS0700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de23bccaa1e0ad2888de0b64c540061884b3a380f6fbbf69505467228ad254. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:22Z), 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/USAKS0700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2d0b585ae07453db09902f62599feabe5bf9d379bd05406ed325ec67789018. 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/USAKS0700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9c47b2cd4ff3496927a93cce1983d8a2091e9289846b50b6c800315a8b31cb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USAKS0700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9e00c0b44664e4ed84ecb2b2ff0c7a1b6f4ae91a0ae83f7b8409aed913dbc9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY41955562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419aadd2a133c37f3ac490368dd46b451b195279057ae3783b8f12a7b99e83e8. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/USHM91922317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf396be7f80f7f2333aea5b4a391ccfb791bb4750c2a2b37235fce00738845359. 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/USHM91922319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558bf25d7474c6f661250c8ceddd80837912275bb9e744f22fd33a1d8dcec36f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZC8M1909005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda39b9203ea66d0277193c1c95c8faeef68a6090f50f62b808f4e582672b0fe. 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/TCACI1573494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58460b9e8751688dcb3cdbcbd6cbd7b2a15456c6db16e815a38dc4c2b0d5170b. 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/USMR81100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1ad8c3e575f63bd972164af177d55e69a891cf28b8f2ff4c815192e98072ff. 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/IEAAO1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43157f9d33d22f52f9993477fd2e095930fc1f056c66e5bc6fd590a93fcffd4e. 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/IEAAO1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f42ee55fec9ebb3ef5005da53b9d492cc5cc215e07257c4eb45a463ec9f581d. 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/IEAAO1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae51ab09603a8d0a705e9528f71092bf9bb1fea1309129b022ae2bf86f92275c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCA21002766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cb5809a5c4ee3a63faa1f6375e1f8cbfc67ffb0032c6571750cc8d402c5373. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCACI1573487.
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 0xf7bfc83c043ae4842f02393633abf44bcc50f0ff8ea72c2583379a738f20375a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCACI1573490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab126e78221a3a5b7386067f78181b2a55febf801743d14206f0bc6ab4763cd5. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USMR81000047.
Ave Maria - Live From The Helix,Dublin, Ireland/2005
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17618e507080cc8f086200dc18bd7342c3820b90229813e855221cd9080b1371. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USMR81100020.