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 0x95bfc7a732126e190f1a9c59d83c8c8cffe4d820645f23b5792449b51a1a19b7. 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/8c6a20b1-1f01-4c88-bae5-2b4cb91c4c68.json and https://artists.proofprofile.net/proofs/artist/8c6a20b1-1f01-4c88-bae5-2b4cb91c4c68.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 0x331dc5d810e64a25b291a85fc7eff87df56c9a7f6ea9301155407dbf11fe0ddd. 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/QZTRX2222623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28d684edfb950a5c29d1a8489d1c91fb3a4b4430fe1d9358f12ef1a0cc1c6e. 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/QZWDD2213360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf162c6da68ec7cfc579a3d05672f2fe9857abe84244ae32dbda04168908bd28b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2227825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d193af0a0da9dd135e33e203b03e7e4844bba81f906ef951f9f4fca159c755f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2227828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8a67d346204ef58da87f4d7ed5c85da8b17362c3a78b96d3c5c78d9594ff24. 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/QZWDD2227831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4d2f02026eb6cc3753bc3f7fe066bf03e2dd30b9721a6739296e90229ac554. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMR2U1752401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d453eb8f83062cc694e6f04245ee5d6e6d8c7cd5b3ff04e1b6fc28624a1848. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMR2U1222306.
In Dulci Jubilo / Angels We Have Heard on High / Good King Wenceslas (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5708954260dd755e4b4cef95540d9945bb268943088e03f429a03182945ca74a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1741941.
The First Noel / Ring Out, O Bells, Your Joyous Song / Joy to the World (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ea9fdf5dc509e66e6fd65412aa41f7b0c5ca2ec8b855e2f23e7fd137758301. 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/USCGJ1741946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484caa95cfce0f24b893cb9cbbbf2269ffba738c8657fccc13dc98c02e71e239. 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/GBWUL2311411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf745796eb76ed5855ba330142e59f24035c0c927b1b2fa4823d33b2d0404b8d9. 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/GBWUL2311417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abf096e461191e3299e342d9a6ff807322ff9c1bf4c2480b9973b9c8e6158fc. 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/GBWUL2311413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6e9a5ea4f751c2f456faac98feba5f58fc26c4407496b868a64f8ae74952c5. 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/GBWUL2238787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a773ac06adcae63193a105c323a2d921de335071dd9820520740301877b94. 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/GBWUL2238788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ed145025a1191bd9da1336c2379d2607012d56f85bef7c7d96607e0d1f7e56. 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/GBWUL2211930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4763a2490b2664cfcb5aedcd804c92bb9d53097e7233384b83d691ff8f0d911b. 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/GBRKQ2279769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b161f573a7c2f54578eb5d1c249b1e9d13f2d1b7a9daf30e91998e573dc8a5. 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/QMR2U2221001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a3b2d6fb31445ba9dfa930f2a9663788b1b9bb43a82fc54e77ec7088dd8080. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMR2U2211701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405eac35da99f184d97f6570b67bfd5335ed2fb033855984046c5409bf34e78c. 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/QMR2U9202115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98323acaebf7e4cab9410534a1ce98e10030b2c854460205b4ee0295110e8f32. 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/QMR2U9202113.