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 0xf2821c2e0182eb521a34ad4a24085f0d40b6108a46b0a4cfc7ecf9d40b63222e. 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/2b35291a-4f8a-4084-b35e-fadf5a522512.json and https://artists.proofprofile.net/proofs/artist/2b35291a-4f8a-4084-b35e-fadf5a522512.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 0xafb1c1889d10085928b801846748de75578651fa3bda80f8d8b87776fbf3cc6e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DOA472400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5a250e5ae5cacb65bb0078f8358b076b2ea7cd1eca98f7ef41699f69e1e70b. 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/USQL81000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0342eb44850d388765c00d26a272b600966b2b70c74572d9e8bdac9ad09cd16b. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USQL81000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04730eb6204eada917c0af5f5d4819a881d6939c42a0332a7e5bad8eecbc3ba8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FR10S2049124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02814a804eb3c509355129e0b7e936cd4ca6df33444fed89ac1c92b839f8ff14. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:39Z), 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/FR10S2049125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba287e03f1336f19e7ff54f47d3c6fe1a626cf15c66cddf68af6a57510e2e99f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DOA251800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2fda58e74b3b48bc25b6eaa4e10b0fd11010106b343def87eb9e7a4bcf250b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6G2503949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0530f0b949b162796a66c0c14e7f088fcda1dde90d414be93a9564f55acd0515. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6G2503951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf861a91b6a11e3c0237c2491055481d1ba9f152c658c3a987ebdc77538c7d9e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZK6G2503958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927700d120166dd973f3fb88a8b62ec2c23315f6c8151deaee007cc56d75b2de. 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/QZK6G2503959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23842b06ece156a93d5787b7bfdba93aeb865155cc3843e78105658d716c7abf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6G2503960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d983544a3252ca5947284f1860cd4e50a0de2585b5fcd63cb2163f6f26f7ab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6G2503961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84127a25d581bc552eba029aa7b90cf97e6b25c8317bfd32e95d918f4676dda. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6G2503962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a2c2b85f3084c6c3b79c440806221dd96223cdf658c0f3f39e37b3bc40f40c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6G2503963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6098ee21fee7e20bd7f9b200e624fa26ae0aa344968df11f660c5732c6be98c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2463380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d63d8e3bcd0a83da748f38b25a5b85fb7d2156863b1a1b0b7415d67435926da. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAIY2463395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e16c84c4e01e567b54ac21d7ef9f4caa43d830c4504bf95e17e80eb09de626. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIY2463400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0066479cd16ab590e2a15b0d21c2e16c3444201dc9457d2a351132c13b425fa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIY2463404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2949e346ff9050e08ccae52cb9b882b3ea35733e7f08ef554c3e25c67a01dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2463407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d37d5636c1ab3fcd10f4cb6f6cb9633be3dc16b1bd47cf143a148ce64bc6c7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2463413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fadd835f11f25a76b2f65b2b363ec5f4fc7b6e34a503968e8b23cefaa2eba9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIY2463414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4075bab63a1cb206b84f94691070ed01abfeae6e65c57f932ee0fe0b5fe81212. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2463416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f3e261ec9069e71355b72f52e4494a0db0d89ffb519c2da126bcdb64dab96. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIY2463419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69e8a2ba1d168c7de6696e7d8655a6134677c2df203891bdad7a9d2aa1dea1a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIY2463422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefe6e014719153c8bfa280f279fbbf3bf7b4ea1f945f5536d8c1379388afb4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIY2463424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef3983ce2a99198145e006acdd090ad2cd41abe1584a18ba24705c5ac560b19. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIY2463426.