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 0xb7fb217c5463807aae1d0acb2243cc0cc734b50597a715722c70e4a9256a1305. 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/5a8aaf17-3796-409b-b497-9918dfe6bbb4.json and https://artists.proofprofile.net/proofs/artist/5a8aaf17-3796-409b-b497-9918dfe6bbb4.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 0x664b7e4c7d407a70c0d9a0d1bc5dd0d6addf3df2ea967c81986761b1786e8313. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US83W1101206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105ef1d6184e869861a7c6a514947ee4ad3f7fb18b6747e7d523cd84b195ca3. 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/QM4TW1945473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40af888b56bb7752c063f30470fd3912cc165cc74d06b983fc8ca6c0ff22165. 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/QM6MZ1926660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5d7803bc312acaeb8e52ee6d6450aae5531d5364e752ea7ec054f66546ceb6. 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/QM6N21997633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e23625c1d7285fd4850877750c7579ad55afac354b636691b5cdba5822f5373. 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/QM6P41912618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e686c969debd6aa299621665b24ea61057abbbeb9d12806532039882b6d09. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW1916251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c3f547aee12cb709721dc1541de742882f33766bd219c8894f963cdfe5029b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TW1916254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d72047b614fd06b354b9a49970dc867706f76333d35b168d06fbba54e5be3e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QM4TW1916255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c5aa27c9ca9bf1e7a63e6a790869147e7c521de763466225eb198c7cf29b6a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM7281902107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ff18ad2c29fd7672b539387a7f770e6df7efdc10df98f520631e9160ed0544. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAEW2083674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a8b6be17765a839a1bc5bbf371dca660b6dedba547759d35c24a86b8947d3e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QM7282021068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf6dd43a7901740b8de585acc7e2e9e5c08272463c2706578a4a4fb6614afb6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ2163122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f172853eb4b5b1e431b45fff435292e3e5b5df2bd53e48e42f30badbe741c57. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:12Z), 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/QMBZ92108341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dee0af07879ec4663015b26aee8516bc4cad64df0db86131518bf1073e7e95. 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/QM4TW2265963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c192325ddb9d36fe78a6d88205bc93e6ef822c3f857d3d5f3747d66b706be53. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:01:56Z), 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/QM6MZ2203025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d9c00adaf7f3ae969fdc0648d84fb55649bae1753a0d4cd8707f21897744ee. 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/QMFMF2230790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4002e0f0f442e29acbaf9d74357fbc7d14c6a6727cc483c757ad7a6b04e919c8. 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/QM6N22365321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86d8e77d609ab2de756a25f8ca0a9702f7746c839f1c4b258b5ee9908ec023e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:00Z), 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/QMFME2325678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631a160979dda18b477db4d2a83c5daf43066616a36be24525257cab03240959. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM6MZ2404947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f04b40be0e984accb8264a35673e383f190ddcb80bc146abfb6f5a9e6f8f66d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:57Z), 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/QM6P42458749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158a4809eebfb69a5c90ba280fc68a782267b7efd25eb1df3487a5d2b264e26. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2578451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4169ed73e8feff15c47e02a47eac4c07de4dc10445afc89d20e65d057789cf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMDA62583523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3881562bde7d79c930c0ba6f8f2ea2bd6b6aafbbc5ac595a3ec696b3666e76. 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/QMFME2578219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45731563633bc24c861a43c312dd6c9fe425cd7c2c3323e521c372c38d2d3bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW1514935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9b752adba7cb5086c555bc9c41dbc17bbcdacff9ba72b634459df1503c935c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMBZ91963444.