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 0x743e0c25076198cfc31ee5328e689ae9753fa905634ac143e1250a531670d82a. 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/1c716091-9b59-45d5-aa27-571f9cf45f82.json and https://artists.proofprofile.net/proofs/artist/1c716091-9b59-45d5-aa27-571f9cf45f82.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 0x642a073801ed0a793e537c40db2acdf6fc24cc71243bd257f712c30f18ea0861. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI02303115.
君と僕はアルビレオ 惹かれ合う彗星テイル
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0a24f167bb34f2cd91084f3bd6819fb2bd7b407c01f54733614bf3dac9cb7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPVI02304734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5efc6e56ee8ac498ec7ffe9f38f5536bf21dad17de6e433fda606a44bf2a9c. 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/JPVI02304736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9aa68ef7dde06335a06bb6e9f76f45f900bbbf2030108afb9091d5c833fe07. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02304737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95ad8e72cd5514e2cade7c9e436bc00b2d25dc18e1d42eb070deff2fd351902. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPVI02304738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33237538a26a3d0fbce3827a8576d8dd5c0420a93aced8e71fb86803cd7f204. 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/JPVI02304741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d467be588d17e7cf8579b13be258126001789392fcbcd8d69958b7f54ae06f2. 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/JPVI02304742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642a073801ed0a793e537c40db2acdf6fc24cc71243bd257f712c30f18ea0861. 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/JPVI02303115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5efc6e56ee8ac498ec7ffe9f38f5536bf21dad17de6e433fda606a44bf2a9c. 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/JPVI02304736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9aa68ef7dde06335a06bb6e9f76f45f900bbbf2030108afb9091d5c833fe07. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPVI02304737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33721183356ce18c21b412d74add96d82cc6d3c5d467dcf824f29b2fb61352b2. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JPVI02304739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33237538a26a3d0fbce3827a8576d8dd5c0420a93aced8e71fb86803cd7f204. 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/JPVI02304741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d467be588d17e7cf8579b13be258126001789392fcbcd8d69958b7f54ae06f2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI02304742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642a073801ed0a793e537c40db2acdf6fc24cc71243bd257f712c30f18ea0861. 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/JPVI02303115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f8e0f455471c9b4ea365c17c9ce37da9b85bceb0fa88f0c106e70cceb3dc20. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPVI02304170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b58fdb9bb87850fc09b2eed642e5ca779c6beb53ebc21f70cb120fb19f2dc9. 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/JPVI02400925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acd5889eb1436fdf6ce3123d51da44d2b48d0f1448b3fd26ce64bc5f6354039. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/JPVI02401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d1182ff1af7c11214574b7a720e96e08eda780962f5781a93e4822119b5e24. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPVI02401646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca36f894201e71c05597e30beb9fca3d5710d1d73e60f91880bf0411d39748. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI02401768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca36f894201e71c05597e30beb9fca3d5710d1d73e60f91880bf0411d39748. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPVI02401768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc96ae5caaf17d262545739dacddd7d191782fbf781a4bac067554add72aa953. 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/JPVI02402151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cb2c53d204b0be8d60ccb2223e5a811ace1365a8c8fb035d81d459ccca875. 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/JPVI02402791.