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 0x014140a96e895e7b5740b521d0259f442a56037c7a362abb9c6086a3c758b660. 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/2cb20a30-4c89-4017-a86b-c3a4672373fd.json and https://artists.proofprofile.net/proofs/artist/2cb20a30-4c89-4017-a86b-c3a4672373fd.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 0x7b839741819063e20358d211c43974a086495d84928999adb2d96a1e9d758fea. 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/CA5KR2152705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c8de78176b43292fece97463db564f6a1d9a43af8084b1d1f8e0489341cc6. 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/DESY21401272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c8de78176b43292fece97463db564f6a1d9a43af8084b1d1f8e0489341cc6. 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/DESY21401272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005c4c7d6d7bd5c98ced68e276c2f898d6164c00a888eec90cea5fea9909345. 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/CA5KR2296037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b839741819063e20358d211c43974a086495d84928999adb2d96a1e9d758fea. 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/CA5KR2152705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bf88447f02addfd5299fc889750476f34f72f97147490090cc6c2dd10ecd5c. 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/QZK6H2111468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520ea6f7c1c6083c7e327e56de78403220efd7fd28e8bfa0fb98c28cd5e6d3b8. 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/USUYG1393058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79fcc5007f71b834674154eef6ffec835179cdb89ec1e958890185ef7150199. 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/QZNWX2136943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2ee9e8be2d73d5610873ddf6c5aeebf788782d2bfb48b3e4fe14eaf5ef2aa4. 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/QZNWX2136944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daaa32647495b8b5590cf060d57b63d3958e0056cf69acf1468775c695b6775. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWX2136945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fafef88ed58fef844680550d9ab2108317b99fbf35122af226a02bfab4ef43. 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/QZNWX2136946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005c4c7d6d7bd5c98ced68e276c2f898d6164c00a888eec90cea5fea9909345. 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/CA5KR2296037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d334ef944aa69712022bcf2be030534b07e350435076ba0dfd2207b5662d59c. 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/USUYG1466886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eccc4b3b2c4ee02de2f0fd6a0527f39387c438db755931c37df454d201814a. 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/USUYG1467417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8187ee0fe793d0d9aea0231087c24bba19709893f24b69747f17d2ae69a11a72. 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/USUYG1467394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc491445ab2ef5e0079b9c9f9cceb5b882b0522e30f7acc99119e9b1235978177. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1466889.
Everyone Moves To LA (feat. Felicia Douglass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266cefce457f2c557084688f8ca785cc257000ff8434496c58a4b3c990a07a26. 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/USUYG1466890.
Git Up Off My Neck (feat. STIC.MAN Of Dead Prez (AKA) Stic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93cf8e26e4b2c138608fd08972afcf799fcca829db706fa5bce68233148c15e. 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/USUYG1466892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a6eaeb5b8c7db69cfe144cd9c7cf75ad3e00f215bfc294c39daabbad1e88d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USUYG1466891.