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 0x2891b74e358fd7818d8ac09802f5d2311203cd51b65468eca131eb3e350d6053. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92eb565a-6bb4-44b7-905f-9d16796726a2.json and https://artists.proofprofile.net/proofs/artist/92eb565a-6bb4-44b7-905f-9d16796726a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Bomb! (These Sounds Fall Into My Mind) - Armand Van Helden Re-Edit
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 0xdabbddf6e367d45fd5ba0c39284254f1cf8568f0c3fceb15bff421a65f1ae433. 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/NLML68000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca9de19f7075109db7fc9d4502f014661108a972ed63a4578153cbe3976f525. 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/USRK31200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df04c05daa12519ae6654b553dec82f12262190ec2643699bd6dcca27b09123. 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/USRK31200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac17f7a43b898b075848598f2823a8f0b2fdea83e9c1dbfef54891359b64102. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USRK31600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da90fe550c90135428c2bbb73a79d4ab4fe54a0d53c62a58e236ee91b7b8646. 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/USRK31200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140c35925614b7756f6340312bd597fa53fb54376f65446ee93481930cd59513. 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/USRK31200250.
The Bomb! (These Sounds Fall Into My Mind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1b83d2c33c0e4a11b7dc2fdfb17a78ead573414cfec257b05e317c1f66cd0a. 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/USRK31100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59558f85e92fad8a9444b94b98c57c697d76dc2748cbc5ea4caaa27fe7714f0. 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/USRK31100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891aefcbc7769dbca081a973d5fc68f44cc8988c89a94ea2e1b44a75b561a531. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/USRK31200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51223e86c9f5030896edf9c09b50b0e4b44303a13141499d09d39b3cfeec94a9. 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/USRK31200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4efe76067ab5b5c78629efe717776fea4680a8460fe9ef7d247cb71fce3ffc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRK31200053.