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 0x1d7914ab05262f6d430ae06fbc2f5023a75a590e900c0d7038068a17c657423a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb933540-6c39-43cf-adcd-fcca3490ccc2.json and https://artists.proofprofile.net/proofs/artist/bb933540-6c39-43cf-adcd-fcca3490ccc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canciones para Escuchar Frente a la Ventana
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 0x200470834365ab6b171c34c44dea365c5b2915c39dbfd175d0b9c2cdfbb17056. 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/QZNJY2021256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7949147f323ac6b3b2912561443fff2a79f86f553441705255f853e6b6fb04. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJY2021257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440b8e2146db20575b01724067b397b6d58a9b9d7e35aaacb3ec03997511a827. 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/QZ5AB2183909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7a2b81cafd7159f8bd348b018856c1a60d9b5ef307adf386b36598bb2b15e. 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/QZ5AB2188557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da181c5ca4dab0a10156717541ce4e832e5c30b4dc2165db11c2e7afa81c05. 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/US7VG2116603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e9b1a47dfa79a47344632688db45a067456a7019f1f1c6990bc277c15d6526. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/US7VG2116561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe02b3b39c69436b0effa9e45fa832898d37212e8ac06266d878d0baf0f19ae2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US7VG2153025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0177ffcf006a40367d379c1aab933955f893a61fcab97110085f65ffcccfecc. 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/US7VG2169865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40dec4d2102bc1218ad3a9bec33954d3ba6000c426e8d0df8b5ea33c1a6d233. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US7VG2198350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545cf9d18c64c4e1a507e61fae29f3e338a53692253e4519727d87b1976fc761. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZGLS2171042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751302bc9ea7407af035be6c67d5c2ffe5416944cce58be56ef29bf7c15833f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZNJV2199063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0154f02e5a9b6f0b4f386704cfa912f7d09d9b96b1ec0da359ac7c18d4e5da2b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:23Z), 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/QZNJV2199066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c015a8e3aed2e256caed88f26fcaccb9b711954f47c06d0555f3c374477c607. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNJV2199067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263272f62230936d21874b5eca74edb1bcec7e6a8153710c8eae637d705c5336. 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/QM3DF2183883.
It's Beginning to look a lot like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a5d56e8777da377f9f9825ee821326c9e56b10578c76fb1076aee127c7d15d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:41Z), 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/QM3DF2183882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58724048196e4cfbc846c5349691d5c9d544616914fa461047073780285eb820. 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/QMANG2250417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57a221ec65d534c38767dd3c1157e467dde62e5fb1a479dbbb31cacca4f363. 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/QMANG2250433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58724048196e4cfbc846c5349691d5c9d544616914fa461047073780285eb820. 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/QMANG2250417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc33c479ce9418bac9db395cc5f678916676423d4a52fee7798f29ffd11eb7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMANG2207943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3c1145a26dfda8db21e8dca43a17fcbd184cb6e654562aa46fdf15c3bfc485. 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/US3DF2241324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd778b7679257f23079f9bfe2de637c5ef9410fa412290e34e068698743c390be. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMANG2246173.