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 0xd0bb6f6fb92cbab8ed7b10ed6060f7b39182ec60e9ec75010daa681941d571cb. 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/6cb025fb-245e-408d-87d1-a386b51c3034.json and https://artists.proofprofile.net/proofs/artist/6cb025fb-245e-408d-87d1-a386b51c3034.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 0x02bb6f1edde95de302e14bfc7cf61b8f276072a59106277c94c2bbd5a10fd093. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRIMG2004442.
「雨の反射」 (Meditative Music for Relaxation and Renewal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c6086885683dceef277a015a2b1a001ea755b6b5c714d07779f1e05105035f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX282367845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d458aa0d2659d45250a53822d6ca4290a3482f220af550c6df8a424ba171e39. 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/FRX282367846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce2e05aa8f79324e5cdcb91c3e7efe9c574add0ece7de7c03ce5c683c04a5e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX282367847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c27c0e7abb5e999bf87cd56befdb9de4e684598e4d0637091c4b169ffc510. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282367848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a49ace8827452d232418a12413da28bf1cf5960633ac101570e52dcfa49ab2. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRX282367850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe147583fdd0533c2455205ed35b4ddae084ef8b54e22e6eb7b73b0f89d7b6f1e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX282367851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf42b53c681bf8c5d1a688eef7b5c9649bbd56fcb90336074a3026b50ff3d3ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX282367852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509a443f5c45b82656e00fde6a804a69e6ca6aed93e8ed0e9cf14710605ecccf. 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/FRX282367853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd00821426c3166b4c45c8dd54c3e18d2df03703680db3780e69bffb61983561. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282367854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54534575560313213dcae452123876422e3ea04e6d55d7152d58e9a3d2f5665. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:44Z), 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/FR96X2299175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb386d5fbed0da4bbd0efddf5988f71f63d0eec46db9ce8ced633c4dbf295595. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:40:22Z), 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/BRIMG2324623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03016fed25cc8c00155923a71b51f6f29797a6941b59ba191e5ca59cd90c476. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRITK2401548.