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 0x52a82a73d88040f840e35ab5412e992282bf7165f43d19ef6484c66f488aeb41. 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/c39b2117-1e3f-46a1-ac82-0b4a2830846f.json and https://artists.proofprofile.net/proofs/artist/c39b2117-1e3f-46a1-ac82-0b4a2830846f.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 0xd229ec1efcdbc2816a71678425e9a51e69b84a884e35b777f1707f11b704e73b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:44Z), 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/QZHN51953902.
Aeternum (prod.El Jazzy Chavo) [feat. Novel729]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26a971e34d55d5cc6a92bbc1386bc6ef7c3599733be8f6a9bfee65758e48cc. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:02Z), 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/QZFYW1935507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce9aa20f0e1cf8475b7d14be4dbaf9c6d897591055786e2cbf37cd49d743b5. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/CH6541973203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30582f87b5ef0dd7229b87c2a3d0efd42ecc89ca38d951a7083881dcab914a3e. 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/CH6541973204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edb2340b2b09658148a3ca944a45a58e386cbf1bfde9611dbc1939189e398f8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZHNB1970083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e78d2a98e693a089b36986181e1cd179870de206b6c794a25bf1415089f857e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZFZ32119794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de4fa3e1d7bf01b5ca843e388958abc2de89b5350f12cecc58819a44f5fa7c7. 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/QZHN82264230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31be85fc7c97cbf02703126cc3be85e0a1779d4e390021ce0d07d521d0daf807. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX202376345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17806a8077cbc3732c226e83835315ce27b924848676f40f5ea1c176c178ebe. 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/DGA062317212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4544a867617907ad5917b940a0ea7031b25848c7e199938e51c0fb9834b761e6. 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/FR96X2459612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b16d8b4409fe903edb53a0ba916daf5ffeb5cc787fd03d436bd1b2a0777ce. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452482909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd669aab638ff57f03c72b93340d015790b36a3a07e9db7ba24c5cf7c01ccfa4d. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FRX762471769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27257ddba6656005f36cd13bb5d0386258528c18d8affe882a41de91bd5312d. 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/DGA0H2497588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee778be3eddfee18c6dc327bb33d30191a2ab4dcbe556718807fa23e544878. 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/DGA0P2406780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05719a215350531e2647eb3e3c5748be44bf17ac0f2ff81cc8424b5779aa57d. 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/TCAHR2349773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18573ef5b4a6dbb51f96d6e9b6373e0e14189d2ef1f35720c90117bef6245fe. 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/TCAEQ2052918.