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 0xb005c78e068b14163f588deff6f9548a22123196628d3ef90f8ec22f6244c527. 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/4f1a6ad6-15e8-44fb-bacf-23e4c8f8f677.json and https://artists.proofprofile.net/proofs/artist/4f1a6ad6-15e8-44fb-bacf-23e4c8f8f677.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 0xa0886707bf8c3862442c08db859c615b8209ba09ef328736fecfb444691224f6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMEZE1730446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154d19e0dc5b4f83cceda8ae601d200ec9562a43f8ae7fa0cc20a8edcf52db43. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMG1566300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bd55a7bd709fb2973483c03a2d3359d730a4e9d4560e2077a892991389ad9f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCADI1799662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3183abdfbb7b6525f5da0a968270ddd7efebdcbaf6c02eaac67c297f09218736. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QMFMG1566301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f917a481ced0b51cfd961287a6ce9244a3b63c96f47e466327aac60d23d5526. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:38Z), 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/TCAEL1983705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3defadcbeb896a147dd8c847eb2d59fd4d2b629392c4360edb27fe950d092415. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAEL1983729.
The Curious Case of Boy Meets Girl (Online)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbf7e6658286ede31f991184b2a404c18ce6502295f65709706caff28d135ae. 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/QZNJZ2243574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df8d6b0a2b95bad6b79b83a8b8d32bf4d4821bf005bdb9c31d1e64ef84b71e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:39Z), 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/QZNJZ2243576.