1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9a54ab8d4181a8c4d56c21797993eb327aeda4f455d01f182f80d3d44d1b1fe4. 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/ebae5c13-4597-41ae-9af1-41019cf7ffb5.json and https://artists.proofprofile.net/proofs/artist/ebae5c13-4597-41ae-9af1-41019cf7ffb5.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 → block OTSBitcoinBlock must exist at that height 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 0x30ce96a1cde9427b739f00ec3c71ec8a8aa8061503a93db46616be4a1c2617c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAENV2322934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32174e7800a05fea29122edafe33fc160e07a3863cf6d48bde802b007113c7b. 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/CAENV2323007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9f1475b76e45e7f123f430eb669a04f0265752a16293405501d9438bad584e. 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/CAGOO2354337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dd3f267b6978decf3ea72ce7aee6ced16e1f9e85e2630f22bb2872462a340b. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/CACWV2457140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fedbe7749422bba11dd0ea49bca5af2222e4907a389f8a5dba23c9bbe17da9. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/CACWV2441232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4890def72b981cf8013090ac651efdbf7e5f2b0e479f3b7cb567e4181066264. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CAENV2438347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da618ebd8e3eee966ec2198ab0563ca5c46faf9bc9702ac5c9be1b832b6a92. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAENV2488810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca49590fb6463e5c6146bb0b63862cecaaca19e0cddc3a960a0982049055381f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CALVP2426601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbb8e831799391a4340a5084a7e7bbd0984517f8d1b090f4c1a4e9447be6bbb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CALVP2449808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e7bc8b635b05946272bd83e375300ef9790b7f39bbf53991852899755d517. 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/CBEYJ2463656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e7bc8b635b05946272bd83e375300ef9790b7f39bbf53991852899755d517. 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/CBEYJ2463656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c1f6d778c0958a501f14f80b72815ee3b3f1b1c74b8884a7a5f4a3e3330a86. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CBEYJ2468389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26861200bc33fbe123c0e5ccb869cea1673246d6f6846b2b8126fa917db70626. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/CAHQJ2575955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0978608f81b785213ba350d941cb27d8482296a01cf8721103fb33b709720ebf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:41Z), 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/CAHQJ2575953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d31063e8147f1a9d55d18f21d94054c633896a13d8f557830272c4280a8d281. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CAHQJ2575952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65568d2ca8661be50c226ff2afc91e9337c8616983511abc5e51aff36508e99d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAHQJ2575957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f55237194a32ce4b98f38fa14af3645aa74a0dec808145b5380bb5a2dac65. 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/CAENV2527733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471d9b35fd39a5ea5fdfd63154cf5acb99c8eee78898e3845380bd032f1ec7c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CALVP2550332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206907522201bbcfae1fdaadc8ea5e50a8ec6a9ec00069826d94d5121a9fad84. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CALVP2550409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206907522201bbcfae1fdaadc8ea5e50a8ec6a9ec00069826d94d5121a9fad84. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CALVP2550409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa733489baa683f6e323ea051185c1794a349340d40f3241615041654889a436e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CALVP2550414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f8182409af595be610960b01812830990eabbac5fd8d2623983e90880411cb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CALVP2550333.