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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bbbb3a1fba35ff8009b9cefb53648333c323b4c020c083c1cd2c6279c71491. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a534fefc-6429-4236-b189-ce8504456635.json and https://artists.proofprofile.net/proofs/artist/a534fefc-6429-4236-b189-ce8504456635.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d19c0d2bb73178e8b21a9f012101a48d5de10c0fb9d6a21514262ecb62d7c0c. 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/ITH642006930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e58aab491e0f66381ca7153111e1c58330a30ae0f740a2e8c715347fba76d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZN82365931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c38e47f836128672ae07b6fd0ad2784abb43e930cc624fd48534441155a71. 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/DEZN82365934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e741eebc73b292faebfe74c1860518639c9169439ce9f7ea28995b2cc7c23f8. 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/DEZN82365935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554b3caef0fa75396d1d4909e745620b2149371f011509a8e59059be06535a18. 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/DEZN82365936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c8904af32d7cddecd023e982f01f7d5df36df91a1113391a084dcaf39ac13. 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/DEZN82365939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce9dbdf4da0b3edd354a422bb3e1bcfe8d5a1451d372851253bdcf1f4d9609. 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/DEZN82365940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd7aa2b3b7ca74006d846983a7820bd70719855f9e694194572618ccff67075. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEZN82365941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933756245f7a4cf4aa7f34931230e5f8d9af1de4ea47d808e0d4716fbc0562df. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEZN82365942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae34370f313a17d6c5403b39e1839bab6cda9591b9234025993f9dc22913e60f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEZN82365943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3840f1317326f890f37610093b05c740f5837f08efe038f5e88ded1697f05fa5. 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/DEZN82365944.
Psychotic Episodes (Selected by Psycatrick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6806a53e9afe97e04123b4748c1a1f5aba16b65d11eefc0254b1d231f35b1ccf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKR6V2183191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b3d1fabef3a5606918782bf76eda1221fd69cf42ce687fea22ab2dc71114db. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKR6V2077404.
Northern Mythologies - The Gate to Valhalla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c04f9f808ee4bd06e8d254e3c88fb5ba235c2f36b36fa66d3f005fcc88d70d. 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/UKR6V2271796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc537c26ac64c75a8127625e754fa755825d669dfc38590f2d85d4a2effbba022. 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/USA2P2417313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aed930223209ad28b954e2b826dae86ee73694012778ac15373865c389c844. 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/DEZN82365870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78db244d208a9576e4bb6d2991aa991cb442954ffbf1af682b4e3617c2b82b. 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/DEH742423641.