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 0x13b29e71c0605103011783120c511c0a181da9c7dcd901182c56749f14bea87b. 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/f16e13f4-0e64-48c7-9526-d2df64f6454b.json and https://artists.proofprofile.net/proofs/artist/f16e13f4-0e64-48c7-9526-d2df64f6454b.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 0x24d3e148f16029d14cbedb7edc16b7c368664872fad41f64505e1a2acd83214f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRIDO2112713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9e284df309883cc4c243d7e042dc38a716328840ae8ee2f7168da3a263409. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:34:04Z), 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/FRZ082200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a721186accc531fe3c395736fe3ba314ddb13bd343372009de039994f656a3. 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/FRX202293549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c6280ef079e9b76cd6aed692b032678ab65c4d8712ba3870a6abb0232acfb. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX872399780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd0044435f730b85ba6475bd71298da347a653dd46e48f3eab254562b8cbeae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:26Z), 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/FRX872399781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc404acdcdba40330448878841102b4325f4d1492ee4caa0abf52daac62384453. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRX872399782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e84306e2062d4afea2692cf5276381d3a67614d5872c6d2e7f54351d10b426. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX872399783.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22729b6f0bf646ef974ba7e195458b58d977d1dc03a9d29650be9b305640b6f6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052491135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d57dd38626cb173220e7046f9b262d17dbc0d2ebb62bfeff686bae17f30b62. 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/DGA062432620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83c6cf0935b8f96e23ad82ab3e3618406c27a66df517787936b9f19ca48b357. 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/DGA092479670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894dda4c14d368a1a7015941767744b6951b84323aac92d752b060db1c264566. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA092479671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dbc23b34887c180436357be07f452b52e777c8c5f9f4b8ef651a0873e993cd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:40Z), 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/DGA092479672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f377067ac8f17f506e712312ea2f2e6dc6dc2bdd2b4f9da62f87d7ee989182. 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/DGA092479673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e48a896135c7980fbdb5744d18b9515c4eb9f229bfbcecbf28e1a7fdcc9dc. 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/DGA092479674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f18f566c90ccab1eb601eba2b687fac553b9c62c2007d5c2c6dbb9d48208dd. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:09:09Z), 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/DGA092479675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0f30485228058e1c7e269e564d7ea8d7f88030712d240cca83dbfbc38216c3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA092479676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b826c98884de67fe807953b3ba86c73f384814654c2575ad881852080f4a1e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA072431496.