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 0x315f6f728518cd23eaec0d140e5568a597b7eca7ef7e13df44a6519268391d30. 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/9d4b2f12-e903-4717-ad72-9a754bee3275.json and https://artists.proofprofile.net/proofs/artist/9d4b2f12-e903-4717-ad72-9a754bee3275.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 0xce46506217873afa75baccecee4d360524deb2b83b3a62f0719f06b93e2ca6ed. 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/USCMG0300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6435662482414b7805dc8c3bf92365cc8029ad3371386478b61d1b23f6db5e8a. 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/USCMG0300834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a097a3111945962c834660af942b014a705a4c05365bb2ac10c623bee05bc53. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCMG0300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e32e5c77c38c4184151d70f5f8a12e98c8edab526f9ef103755def6e19d43. 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/USCMG0401817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66a4908bc04b2835714a66f47978a3cd912ec29d6d726a0f95195a7fc9c1ec. 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/USCMG0401826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26021b7bb82c52e85167687271af3eabee192c129dc19a11bf4fa9b3ac07d3b. 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/USCMG0401809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8eb11950012e059c680d55c78f34d84dcd87f708dd05a5177af46676d572b8. 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/USCMG0401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6931e8234e0e4733328d38bb6bdf0e20d7ec2ea611a92a533255743e74306c17. 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/USCMG0402550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c0d9e0772107be12afbd9407674371ce7764376c7e4125e08e0a2f4408e4a. 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/USCMG0300854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817b32d0029b78274dcd6d04bce93bf1566d144a95b3f8b048e47306be81b071. 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/USCMG0401810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67631ea753f0c788555ab14d71564c876caa373069713449a6d4a613858cfb9. 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/USCMG0402884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb63ab269e109e16c3835718b234608f1ae52940cbee332b343f0cb208b5340c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USCMG0401825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748dada02419eb1879a966cf5df7f4cf1fbcccd063e1ac3a187614828a374dd2. 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/USCMG0402370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c84e8a5526e48f934bff15fb7349a8477ce4a808ad8a9e1c6c80e44b1f7c537. 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/USCMG0402439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c88a821adc0b54eb80da07354495b5a4d2838903d2783b5c79c5ea2a35bd3d. 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/USXL91100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26053ae923cf6ef033ea9e21dc1ba63c8dc7c7682c4631572ce43665c226845d. 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/USA4N1301817.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541cc95c9ca41199eebce2389bca163e71b361f9882dce5ece38d5f104757fc1. 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/USVE20500190.