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 0xaf3b79dde5468865fb0df528a6bf7767ed31c9dbdab52b42c6b0f1ff3fb45ac7. 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/bb08d475-c41a-42f6-bc0d-88d05df852b2.json and https://artists.proofprofile.net/proofs/artist/bb08d475-c41a-42f6-bc0d-88d05df852b2.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 0x670ac9056f97ae961ddd025222c457f53a2ef7c96f4c42ae13b5f2a2a7279d31. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLZJ1918274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df775ae8b1120519cb5a752c8f0a5ae7c65a9ec745bdc5767fe0bc056619f89. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USLZJ1918275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efe9709ef02da1c736e0800222ef21577ebb8c2516e1dad95cc3853b8c6a924. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD2210038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8c2098e5c4f077f3a4a7be75e9741c5e71237d64994510af79474ff70a6d82. 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/QM24S2200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7fc621774e994cc61ce89e58ae06323e350f9322dbaebb9e784f34cbd4d6d. 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/GB2LD2210360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199d7999e0d9a6d8fe69003f6d5d6b230a7546ce03afaae9f06025b0e3c8c49. 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/GB2LD2210426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dd022281de99af2b4f6242976c940563c63fe87466e8b887c5eb62382863ab. 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/GB2LD2210425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199d7999e0d9a6d8fe69003f6d5d6b230a7546ce03afaae9f06025b0e3c8c49. 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/GB2LD2210426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cae119d5e36e0d488d3ed141f057ad3d9daf25e7b1f70c2d121004bba1c7e2e. 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/GB2LD2210427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff4d9a7b67c08a216f2ce32cc0d17a7e4f8c57034acb17d05b7215126595dc. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:41:19Z), 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/GB2LD2210344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df88210308c93321d084481cd04e6f19b63daa623e7fe56ff9e9d995fd99661. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB2LD2320174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7598f3104758338ebe039d74ac42d097084699520031ee53383f91adaab4e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:39:53Z), 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/GB2LD2320175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b24be0efcdb06eca56960a7bc4ab9d3269a029546fbb6bc1539d05c4662477. 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/GB2LD2320176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc281846ed18b8107b6aca563dc597315ab65ecd648839bdf8e9320157f2e269. 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/GB2LD2320177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4cff01fb062c5bac0c92065c7998070d17e9c1dec2179d79ccef1814f8a49d. 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/GB2LD2320178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bf4a3332bfca3f24d7a8d42e038a37e9750d48351e54c43601b620d6269b7. 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/GB2LD2320206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df2d50b5ca283f58555791dd65ebcd885d8b3d843292984a5cf59a4eb22c1a5. 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/GB2LD2320277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bf4a3332bfca3f24d7a8d42e038a37e9750d48351e54c43601b620d6269b7. 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/GB2LD2320206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322406bb8ae24ef745e547e27fce1bf52e32232efaeada60ec31abcd0400fa70. 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/GB2LD2320322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c27a3041219878a4522805d321aa2f78b83826d707ae399e897b4f5318875c. 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/GB2LD2410262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03795a7b2d4a280d91ec4a506453730f42c466fb0a5d2695f9fd6faa44ede486. 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/GB2LD2410263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2162ca8270f21897c3da386c1dba4d73fea0a8e0f9c8fa1cd41dae0c3a7332cd. 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/GB2LD2410266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd721987945c9595088e6a493c51d93c47ce36ec486268192517949d667c99f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZQGC2400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603edb13d849b41295e8ae6b515ed58ad99f3e1f7d325689119d083f7e39909f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD2110210.