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 0x779acc4274f105fe8d7ada2e5ed7f721492a48e396c70ce350a6a84cbf2faac1. 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/ef8661f7-d514-45af-b496-4bf3800322e1.json and https://artists.proofprofile.net/proofs/artist/ef8661f7-d514-45af-b496-4bf3800322e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Onryō: Vengeful Spirits In The Eastern Night
Jigoku: Spiraling Chasms of The Blackest Hell
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 0x52ce693a58dc4f1ed22d7c2073ef0bfca18776c0a1e42987d1523e762094633b. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZHN72169067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee91a448af6a5f2abd04bc7b93ce754372fab2a901016abf567d6747a764d0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZES92227784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5a0bb12c1776556a6cfafa16580704e8313aa63a352d5caf903d8e26fba771. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZES92227785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2008dddc4d1502c6b4d16e6196ea00ec85f5999477c6c4ee846ad8473058703a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZES92227786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12f5536f7d09653b5a5df7b1b227451591394adbe0f1c3bfaa49c924ec6f008. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES92227787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94b8eb264f723fb49c9545a7b005072d627533fca39166efcb11e4ffd30d7eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES92227788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcafb25f25db2b66ee10f9de7b2104552b10214bfb0642ed710d497f3aba7fdf. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZES92227789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f27564f435bd3534c297c01bf163e9fbbb6266c1ca48e2ec70297409ee95a8. 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/QZES92227790.
Visual Kill: The Blossoming of Psychotic Depravity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7bae19ad098b59318a08aa973a91add3417bcbe616bfa3d6fc53feb8e9c51a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6J2478038.