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 0x744b29ba786c9087ba7a3b77a029bcf4d2c79f095a3033559a97c41fae79ef96. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19662b25-9eaa-48b7-9fb7-ead809200a23.json and https://artists.proofprofile.net/proofs/artist/19662b25-9eaa-48b7-9fb7-ead809200a23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
...Et de Delphine Volange le ciel était toujours sans nouvelles
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 0xc73926e2d62e19d01f609a1ea3c2eb8c892b86fb68f5f39029dc35f8201adc18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9V01200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc14c0698bbe8976e0b78c765da9f747d5f9e85ed36dd38a5f422a13a258e64. 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/FR9W10903596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6e944cb4a43d26bc34606b749c83310c3251d9c8e1211fb5682eb4d867e86c. 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/FR9V01200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd654a37df06f498cf324ba2bb9f08dccd25aedcd326c64aa8e8a56605952941. 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/FR9V01200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4af136904f0d53599c15be26e28c3cb60407206597e6b925378acd1e1e559e1. 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/FR9V01200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6e944cb4a43d26bc34606b749c83310c3251d9c8e1211fb5682eb4d867e86c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9V01200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368677f22fab9195ffcb0dce1dce3b8dc3240b99f4fb677a6a05e52ba536ad0c. 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/FR9V01300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4a3b5f3186d1e60bbaf23bc47a3aa143bafeb084869d942f4c5d27330183c. 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/FR9V01000276.