1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8d2bc34246a22374ff38d5cfa504c361b9588df882623abda9a99c633aacba25. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aefd5502-4c6d-454e-b357-01bb0398f93c.json and https://artists.proofprofile.net/proofs/artist/aefd5502-4c6d-454e-b357-01bb0398f93c.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 → block OTSBitcoinBlock must exist at that height 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 0x9af98ce5c8f4cc40776f1ae52316d02dab7a534fef1e236f85b6316e48a44329. 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/ITI091200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822f2e14fdb27316a03abf6d07ea2f8d034332005d26ffe16b40b03e91c11322. 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/QMBZ91377661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bef7e13f9e2935bb1a5623cb31c5872fcfef0cad0313d5b483fabdcbc41ba6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMBZ91377663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568568c10369f98fe7357389540ff8e4e6ef5b4610d3bfcf8dc3eb206949e194. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMBZ91377666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201de59602c67756d69c6e29a6a1ff4e9418f02df0207b083e7ed491d121c7a3. 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/QMBZ91377667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00d525a579a768f3b5fc597bb0adbd4c3b913b378056b168a136ebe68cbb3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW1570154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f3b0760c8c163bfa529ecb132893646d9b402d6424e0f7a5a48e3499903ab. 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/QM4TX1840237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7611dc6fffe2116d056831186d239b92d5c5374d35436c52be9dffc2c995b0. 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/QM4TX1840238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0837f8296f052b51f3970ac1121b1b25e2d36e8c0bfd91784f639fd24531f906. 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/QM4TX1840239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4288829d71110b20525055ffcfed5a642558445f57fec4271429beca92e57aa. 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/QM4TX1840240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b9b14dc6910ca4f943fce83d6ffbb5bd7826914bf20f06c17bef933313534e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ2054252.