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 0x06db4d706f5be918b2214d3bf98411d2d3f56d8e36857ab5abe1b676fee49c66. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e0b2c15-1079-4e93-a3b3-91026457c26b.json and https://artists.proofprofile.net/proofs/artist/7e0b2c15-1079-4e93-a3b3-91026457c26b.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 0x95d7d692e51c659a53d656114ed4fff11c3c605144e1a1f2d538ebc037a52624. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEY471736417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc938bc630ae3d4f38066b73f3c66673d0f54becb8dc655a99755f52b2492e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBENT0140552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f76cbef02624558344bd89c4412b545f7c483f33f536930db72a57a90ac3d83. 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/GBENT0140554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0b8580a8ef0323880b45c2ecf9d99aa255f39586adf091aefdf274df9701be. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBENT0140555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce408b784bf14eefee93026eb055f6e18142c8f09f97640fbecc8f083a37ac4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBENT0140556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bca5a4b19385be46c381bdec4726c3fd1ce004cc3b87665cf01de9f79ce5ddc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBENT0140492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d18ed76418a793c5414e4f71ecf24e0dca59b3a9e901ce6a41add5373336fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENT0140566.
Darker It Gets, Clearer We See (Liste Noir #2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd493ed089da20216d11a4243cc7f3a7966572d1d4a7cbdb809d5ffb120bc1a33. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR9W11504785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067ee975191cdc00cea07cce6bd1e92ac4f8e73e06adbc9dc5922ecaf275a4d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W11504787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d96ea95153a9f7521ceaa6ebf63b0504961b983ad9e033ea9c510263412fa22. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FR9W11504788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6cbb6617c0b5a56975a92d0e6822a3487582d3c517a0f025d3b433493910ad. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR9W11504789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb294d9bde691f4c65e476eded56f9c58d8016881a8552005d1a4e7343aca3a9e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W11504790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe254496c72770e00a4ee3fe398c7a9e221f20310104cac70b4e48661db76739d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR9W11504791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae6ccfd2c1f81bcb091a0c0c8ecc76963b36d3a39cb471f254c5d766517a0ec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11504795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd182766681ee3f6090441e6eb5498b45e0824b5014f835e9cf0a848781443a8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/UK9J51400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184199d6701d9fa12aa9217f4fa99130204277b299869c61eef7f15b786810bf. 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/FR9W11410066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b9cf6037ff062218e0b4eba472ee7b760c385baf00b621ff862b552f5aa00. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR9W11410068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80862759988bec067153c30f77c10e124622f3f5585f550a99ef70b6486f9d83. 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/FR9W11410073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de2003428ec4247cb2cb4b0f42ddd79e3254feefa5c00e5d55b2063ce3befa6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11410074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b71484ac3ed3d140720e1d751497e0bd19c4eb3528788283ad5cba55a6a72. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/FR9W11410075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa927dad8fdde6a82bad38945ef90e37843d6b0c7cd0c17876c936dbce62beac. 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/FR9W11410078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11398e4fef945989b512969da3e7323ae9eadc2a4277743399c2dcc0147e227. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRU451600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff53dc2cf195c4d07f8751382c1993d10f949a3314ec5e150302bf668f82cf5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRU451600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2712f96be53195ad62516d6a7c9338d9eb15f6536994e99b27410515571f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRU451600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb91e26a643f07f98944ee888224264049e0f827cd43c59af287d34a4882dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR42O1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1a90de86253052cff01ebf8d345f06415aa51973087b2030e7b348f295122b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRS182036095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb602b30b493aa570599d007d23c2a75bc777b908d1cb03c363f8edfc6a8b7f4. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FRS182036098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca945ba05c73154b028d29617559cc10cd427657bf0bc4a419abb84ea2cfc27. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU1907978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eecd10d47f17148dfbc8697f19327a11e493582a26ef765c026774a2c8aa20. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBKQU1907983.
Ombra INTL 031: Six Strings in the Devil's Sorrow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe7ef0f2f2b1c09ac29595467a1e7cbb1feb8d4260b44b444c0e30c714de93. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTRX2467249.