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 0xbdbe75bcdeba4fab9872ee0ba479081bdff1987d6af7046cb15b238a451a780d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4ed78f8-028c-432b-8528-9e300eaa0550.json and https://artists.proofprofile.net/proofs/artist/a4ed78f8-028c-432b-8528-9e300eaa0550.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 0x5583abda51031aa6eb10db4ac07287eecd0113ad11a3f6b6ed14cb5865fc88fe. 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/FRX452444373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a228e32703f7f597a4f630e6cd1b1db2316c5737a4a52016f39d48ebb9418a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA0H2415058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee80d5faa7ccc11c457fe27b605d694a9e41e97f5f1643f6084819a19d60f11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0P2469007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0bb7896ff4bd112677ad3104c0fccead56e4fd0b08e45842ef8efb5deed358. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DGA0Q2428819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c43af3e9fb7acd91f58b5aa481b5c727f8c4fe6edb30893170a2e4eb4aa132. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:19Z), 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/DGA0R2477500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9b7fe041551bd371b882fa653f0ff0bbdbecfffef61c0c289d58df66887cf. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:27Z), 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/DGA0S2497565.
ผีเสื้อบินในท้อง
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c2086a3b618e0a6b588334fd3752a3f4d4f8c1c8620ae6daf1d30df8979ff. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FR2X42519585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e07e3ff89bc91e13a168a175d535dd3e5187421974602d49c84be6276e1c24. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR59R2573697.