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 0xa13c4f19c9ec0d4bd60a88171ef6f77a6e69d4b854d0d5c781b9788d58ae3729. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cc8cc40-3593-485f-85cb-ca922d9dc28d.json and https://artists.proofprofile.net/proofs/artist/6cc8cc40-3593-485f-85cb-ca922d9dc28d.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 0xe8132875e9de2a755db978ef540c83cf508f604b0d5bda299b1763d0231b2224. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:49Z), 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/QZDQH1820487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f908379a52b70fb614d6337ad6f82a1af61374276b6d1d69643f0aa523c6024. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:58Z), 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/QZDQH1820488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6da9b27c60b747eded6ae5ec4cb12d8671d39498f5441c5a50e1f6a2da9ebf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDQH1820489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72482780e251ae264789d716d03f371a97365934d6ecc7fa0bdb376e1748f2d7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDQH1820490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e76198c101b0e9e8a7b3ebd666b7b26a2c698bb04ff218921378a0ccd8e3d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDQH1815045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0bb7dbf98ff2d0da35400f8845fab43db3d7cfb5e5ee0288cf8cbb67a8273a. 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/QZDQH1815049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2353ba5df0ee60d1266a84b385d4b7e7424e229ba932d3a6e0bd1448587c7a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:04Z), 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/QZDQH1815051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39da2670cf46a1dc275b7707038bed1e581bc504bd44649952d59fc99fa6472. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDQH1815052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aadcebdedde5e5051628bc1085926dbc5e6ee4f6fa90695bb50b189d4324dab. 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/QZDQH1815053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb752af475694650afc2b4860cc24a33c6a1399287a32f77149829199d3bb4920. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDQH1818721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2437079e1f74e6987e2dc3d703a2fa78719de14d15e9ef3d5f60bbdba357e7a9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDQH1818723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a70f7a5ab38073b4db4f39680ab3a5a395caf07520a8154d63aee086567c4e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDQH1818725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16d2d7442d6537d207f42e18ed67222b25cb5faf865668263cd870a58ec737. 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/QZDQH1818726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5382c585ad0126c016c548c210f601822d281b7331fbe9283376884a078a5b88. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDQH1818727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374e6d40c22ccf1105066e68b0ef75cf7ed43c4042295aa4b7438ea3a3922173. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZDQH1818728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b4e7ad726ad73cb76dee2dab79248daaf80394ea0bfd23a41dca43e05d7a8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:49Z), 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/QZDQH1818729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9340927b60864af9a13f415363e4f5cfbf9741ff3a8d3e89efe0517862447d07. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:21:03Z), 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/USDXS1800731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98287de1dbc37b28362576488bfc88a9c0c3e3395ba912f361f9d580ade7b8e5. 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/USDXS1800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303d5507712fbf2e1930ab4f7f3fe34a3dc3e4c36554a58b98b7645406de44db. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:55Z), 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/USDXS1800737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8e6a3e53488542b4eef502009d4574cb06b6d7d4e6e8b631b4b8dfac96269d. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/CA5KR1966199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514543ef972a4bdc73f2d83142f674cb0c9f9351b4d7b3748cc56dfa3e9bb4de. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:42Z), 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/CA5KR1966208.