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 0x61e9b30856875f01a799dc9415e87929a5cc002c586700d358ffe24a9da3aac7. 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/61970441-fb09-4f5b-adff-58662257549f.json and https://artists.proofprofile.net/proofs/artist/61970441-fb09-4f5b-adff-58662257549f.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 0xa2ba5e1289a69620d75673897749df4f6c8588d2015edd4192f3459497ad73d1. 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/TCAES2014440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34716ac4d9f318363f78707a060f28e15624e32e2d455e3a0f4175f3a6b08017. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAES2014443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b90dc8a203b84594628e8f2e21f7051699e5265386253346457e7493d40db. 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/TCAES2014452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84da2e18640b26f2b82eb9ec36b67fe83d354f12578f24ab62bad5c318ae20c. 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/UKW3Z2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d6ab980a3f4e8760600816eccf58c5e43b162a0b00a72f1927eb76326b5cab. 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/UKHFP1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fe24d37c4a81593d4e172fbaa592750ad892eefb85463b716d0e58b1af85f3. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKHFP1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b4a02eaccf6403e6544e7b5c3b6b5b3daf6382b588a51b6cc9e9c17242bfa. 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/UKHFP1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa47cfe5c9fa303a9c3e23ce745cecd488f30ba8b361a10dac270e24fb7152a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKHFP1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f36f3fc74b94b47fba74ec4963346d850564f37691caa92dc6859508a3f6a13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKHFP1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e734a520ffa79183e9e273fdbc11d69d7c28e6cfeb53e71a8cadff97632f4c. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/UKHFP1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5adc57b4afd107204190b7ebcb8870fa3b3ad049377cb3e4f070f5430615d8d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKHFP1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f02713c9587e6cba3c7459a995433a2a8071f8df15f46dfed6fb97de1d2ed8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKHFP1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d6ab980a3f4e8760600816eccf58c5e43b162a0b00a72f1927eb76326b5cab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKHFP1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fe24d37c4a81593d4e172fbaa592750ad892eefb85463b716d0e58b1af85f3. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/UKHFP1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b4a02eaccf6403e6544e7b5c3b6b5b3daf6382b588a51b6cc9e9c17242bfa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKHFP1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa47cfe5c9fa303a9c3e23ce745cecd488f30ba8b361a10dac270e24fb7152a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKHFP1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f36f3fc74b94b47fba74ec4963346d850564f37691caa92dc6859508a3f6a13. 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/UKHFP1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5db1b84740aa6496e495a3616398bb48eea4692cf6cc7bc4eb473027722fb5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKHFP1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f02713c9587e6cba3c7459a995433a2a8071f8df15f46dfed6fb97de1d2ed8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKHFP1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb6fc61e49cc391c6a548b249a8ad3d5e7c4015f585f5027d8db92ac5ca8a6. 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/UKW3Z2304341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73eeb8997ab0656a0bd3d87e1877a1bfe697daec90efc1ff1e117f73b13e587. 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/UKW3Z2400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64c17583dda8ca5d1ebc1271a9bf854bc01431d6f02134975c06f14de9e7fe3. 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/UKW3Z2400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729db0c0bebfa26d68d861216c220333d7ddf701a43e2773e28cd7b3986cca2b. 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/UKW3Z2400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73eeb8997ab0656a0bd3d87e1877a1bfe697daec90efc1ff1e117f73b13e587. 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/UKW3Z2400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb6fc61e49cc391c6a548b249a8ad3d5e7c4015f585f5027d8db92ac5ca8a6. 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/UKW3Z2304341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596780f92a00b0350ceac8cb8b59469d5c8f3ca67881d8b4dcd640375090c3dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKW3Z2302389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84da2e18640b26f2b82eb9ec36b67fe83d354f12578f24ab62bad5c318ae20c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKW3Z2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596780f92a00b0350ceac8cb8b59469d5c8f3ca67881d8b4dcd640375090c3dd. 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/UKW3Z2302389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb2c8a2ebe349d8b83a845783b315f48f62c3447af0b58708b1d45587d497a. 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/UKW3Z2301880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00313b48527536cb89397a411e7efda0e652d21b24abc14e080e83dab6b4eb40. 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/US23A1552007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8726fd939fe4e1299716e86b6c910525c544263cc6e3d97984539d6537001e7. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/GBMA22178581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ada34fd6baba1ad7c7d788bf72160e0f17394a8290e620a454221d7c55ec41. 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/GBMA22178582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d25d07f415d5758e4af0bc15e0afb614f7ce1bd64b0d5d923c84cd2c84f3bfb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKML51900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2989d604e6ef2731841bea9b162dcef8fb619e387762a35fb47802dc28aab5b6. 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/UKW3Z2402535.