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 0x42256978210781a6315b2b5cca66684dbf54c71d2dcd6849c3a08724bb086dc0. 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/91d6f01b-8205-4c51-bf03-0683fc6d3770.json and https://artists.proofprofile.net/proofs/artist/91d6f01b-8205-4c51-bf03-0683fc6d3770.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 0xb1314b0eaa7972d71de2afdbd7ec9c29b7b801357aa3387ca7ac01374f87f506. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCAHN2357765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8b39a004367359e4bfdd830beead9c9247c69e22baf7d12c7417a184bd9456. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:56Z), 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/TCAHN2357832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56875ba507e8594cc97bba3aada5fecdc10675a99ecf4ead362bb73c8d72904. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHN2357836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539867ae05143f4423c79d854bb2ff2d929baae8885cd95e8087c48f5460b4e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHN2357839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0619fd151f399878a2b2418dde6efeb65b4b55883dde7b80640fe77f4b64d880. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHN2357840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f70b3a1c65adddcc8ea4579f5ec9f18cdf266f509506f7ccebb8214fd95baa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHN2357843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d97cc68e5f217a6a1b8b732922aaf97deda9fe85178cf022b919525cfcd7f9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:33Z), 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/TCAHN2357846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d240c8b3a3166e61eb230fdd9f7fe04f132529a00f6812772042ff4e4541ff4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHN2357849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb0f2d3b78eda6e81a2555fc792da128be73227b56dfbbb23fba2434228316. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHN2357854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c606a4719674e4b19985212b94fdf04843999b84e1a9858eaade6c9791b82. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHN2357860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f10b87877f80c5b14be83c5d225201baf8d95aac00cbbe18dc47b423bc1600e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHN2357863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f070196f7f3db058382f294a7d1558c3f0d52a6f3ba98a2122712290bf644f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHN2357867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79847c0c2c7fcfcdc1af982ad11e08b81d500b0d1fd3e45089213f23f2441a5d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHN2357869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82da66f5107acb8d72f3f5123fa9b907c2cb841ccadbb8b6cd5d5b675fc6dd6. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHN2357871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a4383aa3ca58b2eb1cdb8a10ec128e5375bf30a6cf84f0d1677376a7c3e9c0. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHN2357873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466ec54939cf3e0e99137343cd94eb131eecf3a4f495b22f5a80f1ea17030079. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHN2357877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89a98c10fa34dec360ce854a3f388f78dc63b51d154aee32159ea57275eae05. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:47Z), 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/TCAHN2357887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9db1f5491202651fe9b3eb07be638f19b0f7167a0b1eed267d12bde4065749. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHN2357890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e99ec232bc854c2778b13594a74486e02b51ddeb3d06d0aa27b8030fa74dd5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHN2357895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd9739f7d6a461321fe8da7a35f64e15917b9e6f9fbf703328bd2d9f49b6905. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHN2357899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b55a6605e80404ea5664840717b973f9cfbb9a24303d9e70b326b5647371611. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:07Z), 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/TCAHN2357905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf685e04dcd118dc63b1803b8d653e9b5ef96903953fba049ec8465ddb20ea183. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:23Z), 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/TCAHN2357907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed9e2d49dd4e9471fd5d8b7dda5ce604c35ac4f99b5633cd0808dee8e57bf9. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHN2357910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e042ad14aca2c23bac78cd45584cd18ab3244e43fd02544a8210fe8271c4f7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAHN2357912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a892bb292f5f7bb83db3f2e7b6eb427603574ebfbf1d7dc3600d654d8b48a93. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHN2357915.