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 0xa16b2ef833ea160d5a196727a7a2409423fad44eac4886a66007318d90123fc9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f11f5ac-6058-4101-9e3a-781e02b7134b.json and https://artists.proofprofile.net/proofs/artist/7f11f5ac-6058-4101-9e3a-781e02b7134b.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 0x1fad649f623d563144136b694b99905e2282b1c95af353ce44cda704cc398e0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:43Z), 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/DGA062229146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a912b249e35fb0e5118649b5d5661da94007965c1fbfc7f4483875d508e647. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:00:32Z), 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/DGA062229151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9562ce32235317f52b4a729e01c4fe33b9aa786eb263f1b4bcb5914beb4acd0d. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FRX201792442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc49fedba4f685fbb527521d679314fe2045fff877b5533a9b04dcc30cb0325a. 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/FRX201792443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc298836aabe513c09fa2120368b69d83751d6c8a3a07bbf6cfa3bd08850af26. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX201792445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f230770cfc3dd8710b19555b00516f11bffa36cd02a29d18a059c7faa6342. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL4721000847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c020fddf3d30887919832120a1abf90eafee205163e8e8a68ef27e240e3add9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:33Z), 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/FR96X1601720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1755c2427da86f745fb673bf6c0ce8128d55ae73a27371fea07c01b7a7f1c545. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FRX201936060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e87f2bddfd0359e2968f020786906df476199ba500b456b309b8689eab17e12. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX201936061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71474d05cea92ce000ca33258e65c9ee6daefef0b73dc3863b94a4a7751b439. 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/FRX201936070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f99ef888b5cb3f70085e2e142a13d9c907dabfc61b6a683ac6e9d175dfc6c2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/IL1032050827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4411c0991e6bbd86249904d17f0519ada4c2ec785fa699f408ab11b444af504. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/IL7192200006.