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 0x830e3fa8df910e4a0a5a3481daf86f04e66b3cecdc856b4045f28e0e56c67ed6. 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/146e7948-b177-49cf-9765-ddc4fc692e70.json and https://artists.proofprofile.net/proofs/artist/146e7948-b177-49cf-9765-ddc4fc692e70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Palito De Coco (Special Version Alibaba)
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 0xb52aac63ecaedf3eea0d3a7faf5a6e79aaf434adc2b24058864bf2fbe4cda481. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:52Z), 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/QZES62453905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb253e11cffb8d2092452c39312b8d747f5bbe21c23ba1f06bc95b95bbde7302. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTAU2460934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2358b29d6abb9fb84879fea48c2d480dd20926927021dee4b33813867d5fd503. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:35Z), 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/QZWFM2429249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf164d721ea09a6aed65272c737272a35de3c5f16cba4bc8c8ef1ff5a747aef. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:45:57Z), 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/QZTB72586789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18020c57e1a0f69715a3321d4f7f5e6c52e3a57a747c0a72aa9f550c0ed4e965. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QT3F32578713.