thumb|Napoleon's Exile on Saint Helena by Franz Josef Sandman (1820) thumb|The First Night in Exile – This painting comes from a series illustrating the Ramayana, a Hindu epic poem. It depicts prince
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 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 0x6fe165f2086e24208b05210a213590840ed270e91bd38406516975dcf97e85e4. 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/5423821a-0a2a-4d9d-bff9-180ea6a07493.json and https://artists.proofprofile.net/proofs/artist/5423821a-0a2a-4d9d-bff9-180ea6a07493.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 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 0x73ba1db23ff2489e1d7241b8c0147d17866146826469b553d6bc2b839b5d1502. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US66P0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547892cc453f99d3c20f0cbcfd5507af64eccbbc3000c26cba8aaa8e94864a8d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:17:16Z), 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/US66P0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4767e2ca5702aa236d0db81f243a75b47582b6db08824790b9a93e664d389a0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US92U1121012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b30f64a3e0ce7fe804565692fddc5c13143518f7d18624763f7e6d104a71806. 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/US92U1910337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40329be98aa51d44760641965c7ada6764e7d0a2ffed5f11642f67201ee76c95. 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/US92U1910338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad9dc7593e5d22df2ad874f4e75abc30870cdbfc8087313f4d5299f7e3322fc. 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/US92U1910341.
Give Me My Flowers While I Can Still Smell Them
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0884a9029e2d58d89e63f72b46ab44b7609156496a90a6424d00abe520948b6c. 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/US6881100899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a5d221516004ba1ac7e14f74c5e45ed62514e77b02d9dd151ef771c818f42. 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/US6881100900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf618aae1106295830bb1c4ee55516ab5c734daca474243a8967564063221d11. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US6881100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e441b33fe9eded3735550e12eebba4b701505ec341f5f049c821cd8447bd7. 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/US6881100902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf5a243e3bf7632bf1b6cda66326724729da000d3f062c9ddd360e0c4747bd0. 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/US6881100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd639a6248900c1485042fa4ce8a0b3d906d75daaa3f9dcdfcddf5711df108f5f. 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/US6881100904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34046bb306d920e3b17efc3ab07899194905fd531451b59e927058d09a4b35. 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/US6881100905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d386c692f19ceea8cb6e062654db1b8c3153baa7b1fadb0a07abfa4f4b1f36. 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/US6881100906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d8bb77f9019e56441348ef36ebee858471cff0df58cca541439bafd66dcbf. 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/US6881100907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e26c1146d4d1c32c0c2e349a13e06b7ca9107d84cf2232bd4d7f2e6640066. 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/US6881100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df09a89da07b06477dd7b93770eecb6d5c058054ad4489ca82ffd026339a4e5. 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/US6881100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea90de938bcfd5cd25a1668d6a51f14c80dc445b46ff1d3ad22c94855441135. 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/US6881100910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d5800ea82c009b61a0efa580523f70c5e4962d97c07b8aa6f559d7f74f46a8. 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/US6881100911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697537067738212d180249946b8b1909ae42444fe300e915022d5ea1f20e2532. 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/US6881100912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a66859a1b6535dda72bd7bc7831fcc70916323b4b406c1a043430a5c598290. 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/US6881100913.