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 0x0465528483e797353e78947d21dc1d83ab14c83390e8e309f59cf20b4f83608b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fde867bc-b56a-4ec5-ae0d-95d550503079.json and https://artists.proofprofile.net/proofs/artist/fde867bc-b56a-4ec5-ae0d-95d550503079.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 0xd9cd415ad258c80b4ecfef2bb69fc56e20044aeea7d238101e5d42ce5e0d5f2a. 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/QM6P42331294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e835e0c062bd8ee4e94bc8f5701583fd400fd86a8de900eab7964c00cdb002. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBRKQ2146424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9038722989740fbd3428859f2f442ae9925cbf6cc4a55872bdf403d65656fb. 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/USD421200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00480cd457ecaf04bdfe824ee40c60b55dedbe4a0e58a007b5404254c9cf62d. 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/QZTRX2498185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d64bb759848a9878fc318bb523c158990bf2185ba32d71dfd1b94dd405930a. 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/GBWUL2419847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a68fa3eb0768fa31a41cbfd8c5a9e472c584181fafd3524ef5df200dec5789. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2462374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac72aac776a8ecbdb2c4c1e6b47b41aee4a8f6a956a61cd2c3970536df45afd5. 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/QZZEB2378552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2777f1c08dbae02e544f09aee5e479f5599d3288bb7d86554615d3985edfb705. 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/QZWDE2314681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2eca2d7992bea147ab21cb6ee6c2c0490293cacb914f8245342b9d68c1b6a2. 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/QZWDD2327154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfd6ecff02194a8fa1f58022edbbeebcc0c12f349f3122c06729d2a3958ae72. 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/QM4TX2370558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f04e98823699a33df584533d7a21f14e42f064bea701fbd83a8a40abb3532f. 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/QZ5FN2330758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998b660ba2d665412f133d469f7346bdd4348ad4dc4c16c5515ea6c2ddce5af. 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/USDXS2203239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea050a0260e6994e76d015adcd41bf3ab0de28134f80fe448f71fb51edb69bdc. 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/QZ5FN2250693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c85031a6863d55d2a34bf088f57f86d58c6700653631bd25d1174326dd752. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2213029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e280413c6392258e5246a285c0b44a542a60f6d1b69be88086436e7cfa239. 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/GBWUL2110573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69afb4702b61d40db196f4f114e6d0f06cb2768f1f4f1af7382ebefe8a93bd7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USLZJ2181765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a259c90218547fb9a1f0dda3b12b68156df78b85e8d3c47b205828c59034fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ2156847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f272e05abf9710ffd177b664d6d96fdc8f033bb16926a3a9199c72d13a96b. 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/QM4TW2138873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf62092385b0f7106478ed75d6201a53831dfc3e057cfda28292913744104973. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLZJ2016629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25caf06d829f8ce4e41b430b0175b809dfe60180f0cd8e45ebd442b2a1f08e31. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:53Z), 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/QZFZ62064445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77edf0faaa5db3a544d2d5b0f5531df59fa528bfafdb39d13ad79cfe0832f2dc. 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/GBWUL2056810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706edeec49a7eb94d9a3e9c1f98f4ef3a777c00fa81244ef023a90c07f50c4a3. 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/GBWUL1931204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d5b377ef94d7f700c571827475d81e290923b7dd942b477e75cf400dd68de6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBWUL2046773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94612b4048b3a4a4446ff4aa3ca5c61495072dda2dd3c9aaf28fa3b3489382. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBWUL2046762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf68fc45023b052c7bc69831c1b695b1d94c0343f96c8b40e7d668a3dbf175b9. 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/GBWUL2037006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af1e5bf21de01e4d1d3a1c1315fb3f48d90366c0f09f9c6f31fc9960413bf9f. 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/GBWUL2002142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2655d103a82b9b53467008e0c0b9a33341babcac07084ea4230fa12fac44641d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLZJ2015430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf35bb1d7a5c8e618d9cc5a5d6a846b2e6ad3875dbb338e1c65b56ea798bb55d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92480075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514d021b34d1acb61a17a901c00174833e1b8b6290a26593c9c3d8e92b8dca35. 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/GBRKQ2210578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d10690980100a58faf830a064e5a706324d1e557657ff462435765cffa940b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:55:26Z), 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/QZ5FN2110652.