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 0x49bef8284e95ebb434b204e09c1434d189bf80ba99e9e802739e91bf581fec4b. 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/f3504d57-37b7-4666-9ed1-9bd9cce5c788.json and https://artists.proofprofile.net/proofs/artist/f3504d57-37b7-4666-9ed1-9bd9cce5c788.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 0x34b4037697363c93aace65d0920917162a77832d7bdf3c1b9258fddf8cced2ac. 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/QZK6G2311068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4037697363c93aace65d0920917162a77832d7bdf3c1b9258fddf8cced2ac. 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/QZK6G2311068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471b73c34a295586aff63ca5f9f82844ff6ccb507d1432f995b304b9ad149eb. 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/DGA0P2387813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b52c2d99c7743c5665ac3d09ef2da9a474d6adef783460c03a421d3c3e4d9e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:34:28Z), 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/FR10S2480165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61635055b9e3ef3c425fb7537eef79a39bb4dcd445b6896f274b801c85baba2. 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/QZDA52453495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a71dbdb20b8a49ed3408afd390244502fc93849beba619e9756882254457ae. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA52453493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9a9ad687813afa9bc505682a2d736a623d9a53bb7d89efeacb744c9dc81e11. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:30Z), 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/QZES62401377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3737ab40eb77546d286f88e64e359adca834fa09c20bc67b4f19ebceed4bfaa3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES92440478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed92e432509d0d8833977f69fcd8b800fc67683112c777d743ed690f140e573. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6M2444914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85ea3c5e7527c160bbc94f8745d0a1ec7d18813916db54089b2b8b799f09e9. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZMEN2484306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14f8ad2d740df9fd28e3000d7cd1a51d968def6482896ca4dac5b2dfd2ea68a. 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/QZNWQ2457728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14f8ad2d740df9fd28e3000d7cd1a51d968def6482896ca4dac5b2dfd2ea68a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWQ2457728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756f950afb3c069e5d1913f4f7a965524b3035feac697a5c8aa678bc9a8d0f80. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB82470354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff121ac0618961d685693ff9d09b0b4607fe234642e8efb8875cf7d59392b2b5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTB82424036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e7e87725865f212331f2afe0cef83b52b89ecb904cd3635eb43b64550b8d25. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7S2423849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03adc5ebd327c6045894658b3e6e7f03a8881ec5278c934ba6f1bdf3240bc19b. 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/SE5BU2546447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cc378489411957044e0316edd16163021ae8d0e3c0cecb8d6f42740eb7573. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:44:52Z), 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/SE6XY2557392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9910fbeddc5726e9d11809c421e3a0ed56c16bbf36d1c1ad17d3be2e6abd6ab. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:47:32Z), 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/SE6XX2579275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976875a9668291b36a063ffb7703eb92d5ee230429db55c3ae9bb33b4a20c38c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:30Z), 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/SE6XX2579276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83836c01e9a8eedeefa87c19c138f224fc0a23e15a037c8d1eaf1c5dca288be0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/CA5KR2546237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7412313df364501e0bd0bc2d640047b7b1196fdea6d780d0d2281e26a573a6. 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/CA5KR2546238.