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 0xe765577b2c81077f6a7815712b2f8130e5810e967d54c13357ee6810788ba961. 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/95f78b51-f458-4eb1-a727-99b5a2e8976d.json and https://artists.proofprofile.net/proofs/artist/95f78b51-f458-4eb1-a727-99b5a2e8976d.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 0x99769912446f7ee98e6a466e552aeaa0f13481f341bd3d371c26193e5624407b. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZRP52446600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294186fff19a31872aa03030cd96c404c8ed8e4914019b460c20d9919d536be5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/GBUM92400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bad8bf26d1415c7275ba954b1133b7a5b377b469f93f1e8eb7c975a2203718. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CA5KR2514713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca05958db22509d685c2ca1f75ccec1fbcc39f1de542de9f33a3d102b2cf2453. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CA5KR2514712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb873aab00d9f5eb3aee2093065bffefd0dc0b589a5a76992ac9e10888e927ce9. 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/CA5KR2514711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca05958db22509d685c2ca1f75ccec1fbcc39f1de542de9f33a3d102b2cf2453. 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/CA5KR2514712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb873aab00d9f5eb3aee2093065bffefd0dc0b589a5a76992ac9e10888e927ce9. 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/CA5KR2514711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2d4c5d58318d4ba722e4a13d4c0fa2070a1fe89166ce1124fa78d930f151b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZWFS2515162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a80b92155795601be4d0e14129663c9fe38ea306d8edfefd2e237bfd90da28. 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/QZHCR2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557019049356c337d3346e07c1ea8404610bf843119f02cd00cb4176fba9aa83. 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/CA5KR2303869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557019049356c337d3346e07c1ea8404610bf843119f02cd00cb4176fba9aa83. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2303869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d233468c4658484e15e898a6376487405ff3bea0e60d04fd5f4ffc4d538fff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2267664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ca7cb008c4e77aa685d68e4d0acada7562bf02ef04714beda91c7dff53404. 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/CA5KR2472402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d0ace6df889259986c9a7c2a21e6962f8226f9bb57982741e8c6bf3ed397b9. 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/CA5KR2472403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475fd7c69e28d3b70c050f816f0efa54fb8009cb5ccf08915ce3dfe29637b0e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZZEB2450701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1742db82b31194ab637508ee0cd12f620dad289e1a8bed363069786a7a7d85d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2420291.
The Noodle Effect (Re-Heated) [3rd Course]