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 0xc447aecdc192e2d140f305c097daa625e985cf9ee64a2bfd8b52ee8128894543. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d23977-1c41-4118-9e5b-195e7f9fb327.json and https://artists.proofprofile.net/proofs/artist/82d23977-1c41-4118-9e5b-195e7f9fb327.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 0xc05e965eea3cb2586457e42e26916cb6501c823d5391a285f33909f0c9d67470. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEM072000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c7d9251b17e570ed57572467c75802b049f4d428607129ecf2a3957640718. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEM072100308.
The Final Adventures Of The Krewmen Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944925303fd205643c0595b9e9966c099e020ff8e74f8e80b8ffc89e43aca046. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKYA0603891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84fc2cca50cc427ec9cc8f464cd110fb3429b44a1ef3c219bf20028cb2c0664. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBKYA0603893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f6f523bc67b93352059eef78a07b64df4cbe6f1a90b516bddb9d7e37863791. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEM070110942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493a30db8d563509f36c53f832c21009fa5f8547a871bf292383f5946c15675. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEM070110943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e319ac1eb6c264521083ea88ee8ba416fff7b921d62a8ac5c3952ffc669b8. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEM070110944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449fe28485e3556765b04da4b7c4a3b3892b838aae01e83875b4a648ba510585. 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/DEM070110951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109017f97703b75f24fb34c090afad46c039de3a7343b6101a463526027c15b5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEM070110963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871fc7bff68ca5bb3a41fcb2e1fe38bffa5076733bd9f2847cc3df616380a49a. 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/DEM070110964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1aa68c39242df931391ed1ad0088c67c8d37d3c05273a5fd0c645d0b007996. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEM070110965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe763be7f8ddbe6f953b0ceacbc4f25a5f7330e3eb56c4e86c34e206d27f19977. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEM070110968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd603f264a1d6a0a186f5e2edec47a5f2aacfe3a29b59d51c683efcad8677b9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEM070110969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c2faa21a5fd6b57c733d3456d2b5fb95e063fd19e3a328f84c87a21010d637. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEM070110952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51241195701004b4c9ab9c5c82c849a5312883f5a1af136079c7bc19b7f7f29f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEM070110979.