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 0xad644bd5fda3e3deb5cca827722ea8c8d082c1ede08739d191e7fa7a6c065f11. 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/10c32184-5dd1-4da6-8835-21e2953bc04a.json and https://artists.proofprofile.net/proofs/artist/10c32184-5dd1-4da6-8835-21e2953bc04a.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 0x3e117ea0e0c369cb2d2525ee5b28562f95a11795506f9c517d61543d48272b21. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA0D1927381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b99826ace1f318e0455262be37eacb03f4a33612be4bf2d2589802c7b144214. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA0D1927382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67461f69f9f73ac9c8bc80ba37c707fe00583f466bfaa0e93a62e411355099. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA0D1927389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b69ebc978f9b6ba3ecb081a29ef458b4e9dc128b87bc3c661d1f32962879a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUA1H1944469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1628e3f272fa6afbf9d365c8eb84d1bb1bfa2ae37a1c99aa7199dd684cf8971. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA0D2064616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e32febf092ab7497de2cb2c027eb9fb210b5a607fad69efcde1a58f8e82c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SMRUS0071941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798c852117e636d2f13832763140ca42b0a7a600ef4be3d85610ffd27516d43e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:13Z), 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/SMRUS0073245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3ecae19683b31e5cd058292405051196db7bdbaa5b18ca62b47fe693536b00. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/SMRUS0074722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39a2131451b32cc5892449829d30883cd1bd298cdef30f6b21b059a88cc8b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUAH62400997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12131b3529717545e91211d2cad1c9f5c18c0ed124f39b1b287391c741728f9c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:51Z), 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/RUAH62401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa0e33411ed9e2be67cb549a5afedf299051dbdb7bb17825132740952aaacf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2562661.