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 0x7c816784f769357127be10d19925d19bb786a6e4e11a34f25a1b23535682bfd0. 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/945e7329-a20b-4f38-b93e-5ae06a9086d1.json and https://artists.proofprofile.net/proofs/artist/945e7329-a20b-4f38-b93e-5ae06a9086d1.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 0x2b3cc5493b5d03e39634d5d0e10fafcdbbc3ad578eaee464f4cd72c04a0c2ea0. 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/QZNWV2044640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6596909b09fbd8dc8ba48749ac0bbb320355cc6a87e0bd538ba6ca3e4f4c2b44. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NZAM02101478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d07084e3af165645da5c1957acadcd32325aad8dedfbcde222e98f013e5b94. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:21:01Z), 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/GB2LD2210295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0d00d2a45928c747196b9295a095f56ff2e9ea0293f5f53e25027090286a7. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GB2LD2210391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe636bdbf5766a17ae29c803cea335b1656f958af82a12c6eff38ef8d655a081e. 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/GB2LD2210392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1c36bc9f4866cec8b17c304770c0497bc74ce01a033813b220c118d403af88. 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/FRX202273765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c89bd343837d54e44e729515c4bda885989748f10736c0def67cf2ca04672. 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/CA6D22200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4f75decbc2a04252b84d26d7e45624cf5d0fdc5cd9da2ba07b5e8beb0a44f8. 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/US39N2307766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392683d8dd40ab4f90a030285b50c6a09deb77ac4428da7075f7cf667c846f9. 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/US39N2301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392683d8dd40ab4f90a030285b50c6a09deb77ac4428da7075f7cf667c846f9. 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/US39N2301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c54051e6bc7443fca9a63e583bab529f6c52fe13866a2f011fe211f33a3dc8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NZRI12201647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8f9742c16c54efce3fccbb75c189a541dc42867d054dafee4b38b8942fac90. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8KE2052130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee9c15ef245742a4708768fa7f525b8573762416f9dcd531a016daf9ffcbc6. 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/GBVPL2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d2f387d7222fd859089ecf872e59d2565ca5179a7525126ef7a7dccfbcabf. 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/US38Y2421379.
Falling (feat. Elipsa) [goddard. Remix] - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9fe2491aed79e9f465237dc4b0c08a9bc46f3174f56635ab83acbfb764cc3f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US38Y2433695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3be5fea9799a2ebe8787be35f1443a65181c29d853d54f91a27aa92e6ca7e28. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNWW2095344.
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 0xe54fdeefcdbcfdbd05e39ffac94ee17aefefafc365f608af7f7c14685a796342. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBCEQ2100117.