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 0x8ec516b17386255cb2c8494cbacb69833ff730e787dcfa37c056180ba1847707. 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/d1a63325-d13a-464d-97a6-75539126be6a.json and https://artists.proofprofile.net/proofs/artist/d1a63325-d13a-464d-97a6-75539126be6a.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 0x40e1b84f30d448d516fd2e288212eab61bd4e9523dfa086e45fb0687a3d9b115. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:30Z), 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/TCAGZ2327692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c0b918925dfe53bad480cd16cf9e835304dd6e477a4ef11bef7e1f197e3db2. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:47:37Z), 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/TCAGZ2327706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06abf16a373431f07376b49765f4bcf87c844a989966bf18d15f9e43cd008411. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:07:54Z), 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/TCAGZ2327715.
Fantasia Sonata God Dance (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63054f61aae700ba20355a8998f5e26335d6c891f5d797afbc72d21364f0b711. 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/TCAIF2473547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5db967a0fb3d51b920232bd91db73a9960c9b98b30faa3bc5fee4d7d973630. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:19:56Z), 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/TCAIZ2413641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1292237da1907dd0030e84ffb049ce6dc47685ff469874ee39eb208e7d4b851. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:12:31Z), 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/TCAJC2464114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2e34367be95861a2e7de05643552a3342fec4441daf7560265e35d0aec57e. 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/TCAJC2464024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284567c91ce93406eb800559a8c96d6711523f6d84719bc42e0c694fe335b18. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAJE2593005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe366efc849f9415e6565a988716eb1fb5e88552ae35dd83a8daf62bbcbe63d1b. 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/TCAJF2534094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f806e4a3bb87645649c1f3f1f3554214c1ec6c61dbd1f90e72c3dea713a612e. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAJN2501886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea3c693781eb55dd837670c84d5fbd95974d1e5eac372092c54f83d664da74d. 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/TCAJO2557488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb1ac25611b0e183aba19f05b6713c0011299d9bc1af69876441fff6ff45469. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJQ2586139.
Fantasia Sonata Surmount Vanity Aufleben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc588f4a342cc7f4e7e78ab1cf4833f62436286681f586f9ee16ac6c06f4dc. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCAJU2542706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b333e7167dc4ba47caaea3b534ee34417ce4f022eec44b7cd12cf2a2a0f3fc. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:05Z), 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/TCAJY2554146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fa8820e9717c9f725681a39b86b1a1f1a024e455618c68bef63713f580a0fe. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QT65Z2523082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba17ee171a8cf808bc02c08c1efc43edc1a3ec862680cc0de4ffe9ff80d6813f. 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/QT65Z2579726.
Little Devil's Rhapsody for 4 large keys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e5b6f9b444d9343502c11081d4c0e620790305e49d45ce1308ff520f003fe9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPV2317234.