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 0x58ef332edb8e415231a2a27a5e16fb9360fecea414838335ec6fa230a7041dfc. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b524b54-7410-4230-bc29-73da6b6f03cc.json and https://artists.proofprofile.net/proofs/artist/4b524b54-7410-4230-bc29-73da6b6f03cc.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 0x56ec810af334a342007f0e03fb173a2c572a99723c7b4bf847f201897ba19dc9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBKQU1405861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa5f46b1be7295c3eae792ef7cc95eadf713d839efb4f7f00237de586b84fc6. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBKQU2000292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e11e96fe5c524ea325e467dcbee4fa91a596173862df59c29143a8ce73e186. 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/GBKQU2000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c46410e1923a8b0751c980f5dc735687d5fbb098d5c10209920280a42dddf0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBKQU2000294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edbfa0aadacde1c7eb9967a52887003f2e7f1a3d8e2aa3a32e46c9dc65abc8c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GBKQU2516436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d7bd559a0ca26e4c8ea94c9622be573c644cef469e4d1f0f632b5641aad777. 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/GBKQU2516437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dcd8880bfa99064a5fb392ec7ac66dc54d1e353b191f8cf7f1b428bb91f0f2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2516438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb17e8a77433407168acfbd99fd398378828e56fa2bed9e4043238dec57454d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKQU2516441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f98b05fc13db7b06385a0f54c24535a6510e324a20f4451680633492ce76b50. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU1741893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb9640587b5af14694ba1436d73cac44df21ed19a136ca9556d0706ad3fab46. 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/GBLV62315733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6932b25895041b73548aa7bf5a22145167e898df1a7e36915827b3d9fc2ef7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBLV62124854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2023c4079e921579b76c64536a93827294ed90af384019b52bb6790d1d93c05. 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/USA2P1683820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00784f88396531591c3efd6ce3231123d542a3b42369c1429027d85d3f0eb80. 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/GBKQU2479217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b7d46f56714a72195b57a588a060958712aaf1d9329d779d0497a8d807f4a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2062353.
Free Earth & Forestdelic Present: EARTH ODYSSEY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8776a2fe44a065c4334c5898635d140bc7280fb8b59e12b6aa990b0fcb0c1dfc. 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/GBKQU2463335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad2678bfe42c16dbc6e02c5c9e2dc8b3dbb2634aeb83974afe55b7a16fffe2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USQY51345211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba89e9273bb5b7265c7ad2c20ea2bd6e047e377664b2e523346eacf2cab0626f. 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/USQY51345217.