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 0x42dd2a93fba7cb119a5f705ea9f03790789404fcc598a08c89f30931b5c1a16f. 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/49a9d57b-2d87-46da-b34f-c5d3d080000c.json and https://artists.proofprofile.net/proofs/artist/49a9d57b-2d87-46da-b34f-c5d3d080000c.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 0xa122499ebeaf72f1e07451a965394c359a77e5ddfcfde01ea1c6e0a35f81d0b6. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZNJY2366014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc718ad8072bb3439c7f57ac180b7499b214497e1b882763a146aa895a5dcd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNJY2366019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb420741e7bb9f4c0989d7335829efba038dbef5be666fdb53f859ea250e888cc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:44:45Z), 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/QZNJY2366020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484afbbf692b049491d4bd13f136bb6e4c92a8f4f9d7bf43898b5226f4ada0d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2366022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6838266ec567b9a9498a956cc22110bb1575e4f25ead287426e937599d1863c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:49Z), 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/QZNJY2366024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659f1f9bb6edce2083051adfab12e673300adb70e9acd527230de5669d317f8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNJY2366025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0309c97faee57f1682928e8adeec2ac3cf4b79434119ad776a8ee942bd520c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJY2366026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836d35502de969796a67e014b0f76ee811a0256cad6a8814e456b0a0d33e100. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:13Z), 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/QZNJY2366027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9597f355a5df7edb354498a61c23822e9ccc14dffc505a00041a2f43f6801b. 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/QZNJY2366029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93fb8fe537aaf0a18f861d439ffa6d30f89cca26c0dc4613075f048b2c50d4. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:32:09Z), 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/QZTVM2328129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ff566e603cfcc6b6467445d9b3cbfff0c1fe2b68d6cd7a7d5336a0dd095d96. 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/QZTVM2328130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ea6fd56e36ea8a8b8cfce66ce2111119a72a17ae0001e005104718738774de. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:52Z), 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/QZTVM2328131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428187c276241214e404b5c10bea60869852d8c4d39164cbacd955436534d7f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTVM2328132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b812053dfbd93b7203ed3385aea599e1fcdd200dcc721ec056a378cd7934e5. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTVM2328133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e98884e3e628aa9f4bb26c3b0701dff375987cac1cc03fe53d5e24b4a627e2. 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/QZTVM2328134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f48f2ba8c227b2e92666c4c67051ab6944f50f852f24c4f92c8946680dfc7c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZTVM2328135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aba3860ead772910791f2dccee0453fd80f5818af272d51718c632c77a78d57. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTVM2328136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee26ab421102d831cb131ced5a6459195001f3c6977a4c238b0713b99efee5e9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BR9AL2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291ef75ae9c6767fb383bbf3140ba27b1cc971c61d0ada6ecd08fd7ae50df72. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR9AL2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348735eefb093b80bea47e1b4bae0ba5ee54c2dfb380267b6e2b2a43efc23d3e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:39Z), 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/BR9AL2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ee07b6913c1712060f341b81f8c7aac9897abaf31304d80f83bb95ebb3c5eb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BR9AL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba18320ace8b6ae3adf132d0cf21fbb67a315b72da6d3046d8f4bd95d8724d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRSIC2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf291b19372a175181c64e3511fd7b8d2d755f410a8ac5327870a1938819fffcf. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BR9AL2200002.