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 0x8867c7ce40d26f7e6a5fdc0fc856f5e009d1690f64292ec5cfa7090141bf1248. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f243fa0-e497-45b3-9cf4-8cae797bfb6f.json and https://artists.proofprofile.net/proofs/artist/8f243fa0-e497-45b3-9cf4-8cae797bfb6f.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 0xb09ededca3ce2958437962521a4cbb9391c4f9f724c214eb70901c17f4fce17a. 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/QZTBD2438045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f220cb7c3d44afd330da4e20a3529e72c7c5da0d8fb4e95a03731931328cb46. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ772451251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3007e4aba0c982e0253b3a55b20b24c81103f3414045006b2556c98a8e15b006. 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/QZZ772451253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3929063b27577fea37b2dbf6da36f24c44ed670bf590314c07ef28fddecb5ca9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZFZ22591247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68684a319b1edbc98ac91549c070b95f24f5b79c9d4f1f3fc4963a763b71ff9. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZDA42567031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603996f9f77effa62e017fcbaee2b9ca538c20a579b1129030659b7c4256f164. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA42567030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf85ddd4009c6435dc5b722469646b7c061e9dfa3c75af5f3ad11bd1742534f. 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/QZDA42567032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f8f0b8ce0450dfb6d7504e14b9db67814ece520b0b0cb4adf80156cb5a0ea. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZDA42567028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e74af4788e0da527a05265b344d10f8ffbc298b2d75fa4ef1ca36c7b3e36cf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA42567033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603fd5b0687d9baa039a9c59d304a233a7f9b95ddd451da919b6a86eadf4c303. 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/QM6P42535807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fcc8784ab0335401b444e4a651e570bf1cb02ebbd3ecbba31b0ffbf04af188. 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/QM7282500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a312e2993d03aea484b03a34b0ec1f9465058bdc32a845b8d2773a7a0408129. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM7282500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5becab89d2875e699a52ab2883221420bcdd5aace543353af558bbd1cb54832. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJX2500325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c656e3f7c90f75a37952a1b80acb28e768733e3ab0f4c62cba433ee841cc06. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:26Z), 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/QZNJX2500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1182daf8867e3c0066025fd1cf80b11bafc7b0e1e2261eaec493b5340a85e2ac. 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/QZNJX2500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82604ef333f94e6b525bf11e92ff85ac50c3b35b7fc286432b4edc85cfead6d9. 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/QMDA72543961.