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 0x36e2473d310afc91fc4ad3ced3cafd5e70b1651725aad7537774bfd704f38341. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed3117d7-4875-439c-b15e-6b4db6a29847.json and https://artists.proofprofile.net/proofs/artist/ed3117d7-4875-439c-b15e-6b4db6a29847.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 0x882e26cc1a95b380e4e3d6fb579a13a3c6f709c2a02b8b112ba47b85670e85ae. 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/KRMIM2004191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e74471eaa8f279cea30a5152879d658615dc3b02df55a75da60d59c9a1bd2de. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/KRMIM2004190.
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
A Story of a Boring Monkey and a Baby Girl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad2b1cb6d28255eeaf865208a9c384dffb5fc4fdda97cebca24a54fcadda78b. 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/KRA351404311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7a4877cb0a0cb4c5bbb3eae3a5464ab4c0aa31f12ab7bfeee3c03c716c05f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/KRA351404303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694847a54b6e3cf02ead66a3f39aba767bd8e93ee449c5f3c224d41fd431890f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRA351404312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b0e76d7719240743c1bae5136fdf123ba191e1fa0e251f34394d5a889f5b1. 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/KRA351101569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801834a579964ecaa1ac590afc0c823c1c3a8b2d3165ef15e59b71252243af3e. 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/KRA351101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7316082ab60819887d5b1b396eb52415e926ea98543dc3ac5baa3c3fbcdea. 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/KRA351700298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aecf05f5bc972a4828461b5f45f0ded780c07a83d0fd83a9e8ba17d8025b96. 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/KRB751415737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b0204369f60270e7ca232d1972995571c23919e216973e3277e331a749d036. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA351404161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f1196ed39e0357ac4526508df206d9aa15db8764342e581874d039446e585. 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/KRA351404162.
Dating Agency: Cyrano (Original Television Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909ff68c872451028edbce1d3f0b6093c14f72adf45f691a86ed8efad217b01b. 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/KRA491300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63b58ce237e48bd2454fee5ce901e5066dd72133256089281589b6c6db58e3a. 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/KRA491300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a6e61a140393e8f6bbde78952c7141ae38b647fe8f0602d97ab745be2a2d08. 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/KRA351202766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3689092f1ba11aee6bb18f5b85af0ca7179981e201c9a4ea2d59488710daa7e6. 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/KRA351202768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca6bb5d80638a266ed32210693ba06308035d6943ed60fb056a62e209bb70fd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRA351202767.