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 0x0f08de3e915fae2df100aa2fdaf38d64314e5b5682e7fc688166ac5f3527f731. 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/e4c0eef4-575b-4f80-afe5-8ab5105d18e1.json and https://artists.proofprofile.net/proofs/artist/e4c0eef4-575b-4f80-afe5-8ab5105d18e1.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 0xe479994ea00562022e419f9ef5e7a6c456be68d902b050e5e02b68ec56f0e343. 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/JPZ922404899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea35a524049be03697c3cb183645efc3213bec39ebe3fd6d0a1f4538bd5de0e2. 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/JPZ922404901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996069488cc2bb5cc67e0624a843811d03f51a507229c71ad6f07ee8a7c5bb5d. 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/JPZ922404902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0461a27aeacb704650d3c7be1c81da650c6bf6c7cf71f9890e36771d036894d. 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/JP92N2426085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5096321c86b94183a0ba794b586dea9b13e1d336f2a59db5b7c4928ccbc0d72f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPZ2402608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5096321c86b94183a0ba794b586dea9b13e1d336f2a59db5b7c4928ccbc0d72f. 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/TCJPZ2402608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb201118a7717e28be2e5b6a254a9c4b2d6566669d189edd5fb7bb812bca4bbb2. 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/TCJPY2357147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d059ba6643f95c52338482d2acfdbae19ff81c3c88b1e67e261c6b1355b5d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:10:52Z), 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/TCJPW2353289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c99430e41bc81ff4d21ec0f3f51ffe532a7e043719dd08b984186536343017. 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/TCJPV2347284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d699bf8d99be6c8e7019024b22ce01d613fd0d6f365a0ea6ccf471322e4be6d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPX2329335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff3f2579ac88f96244184281763a7d63be97fa8117bf8917b66a7ea593d91cf. 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/JP92A2208956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a65418ef2e3676a8b19ca98dfcaeedc614bbc6b123b052c9305edc6532387f. 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/JP92A2207734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d59347ae429d8dca441f06c0513c757e6465eb0b70bbdea7571e3cbf9f9d952. 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/JP92A2207735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb73aa939767129c3eb07a2bc4620ab7020df4fe93727de433b8ce72f647b63e. 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/JP92A2207736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a12468296479253fb2990c4cdb8ed5ab38628565eeb4282a55da6922e30400c. 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/JP92A2207738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd57e3dde6e3bae4c88ecef35f7a5dd16d9fae47c5673927796158e61b0c0775. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:47:09Z), 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/JP92A2207739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dcc378cd3926a308f8710fd79d6fcd527b43a478d502720c15f6e1b4814b4e. 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/JP92A2205910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2d4a07d166b3e926c008550eddfb32de34b807bda4e61a9ded34c9efadf75. 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/JP92A2203400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f61b505e5797f1b13c4ca73a8a512791c461f441fbc53ac25584c91288dd08b. 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/JP92A2204702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079c18170f83d22d4b3e6bbead069c5cf67119df08ba62afa30438f966ba142d. 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/JP92A2104571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc4da4a932a19267054b08ea1fc1f949478e27d0157184dc058f217a23f658. 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/JP92A2105597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c8f4740d7f9b6b4b172d11d943efda8173ee39b5559e3bfc033b461f25782. 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/JP92A2105598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e35de22a7d0df1ccd5470544b7b2e36f2faa282b16b65b708a612454f4b8b2. 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/JP92A2105599.