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 0x8a757de120b053f5596355e7b83df3d2e886f01c568b16b317de086bbab7c6d0. 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/df832fcb-d383-4262-8201-90b9c385d075.json and https://artists.proofprofile.net/proofs/artist/df832fcb-d383-4262-8201-90b9c385d075.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 0xada6d13b7070596a3c2ff32a4addf3e96451bf715fed36bb29d5b95632500d61. 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/QZK6P2309698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee73e048200639fe2b168030e211111a2697d9d0db06d63ea3a76a33a8a2bef1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6P2309701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d41d3468dea8d300057ffda2fe434f7897f1f89835479eea1d2a54be30d8ec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6P2309702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24df11067b9595f33744b050293e9e02c383b36384e33f40760e2448ef0686. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZTAY2422393.
The Invigorating Tale Of Robert Francis Allen The Third
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf1149a1dea8917a513501c028d7d8d3f1af684418db21fb89eff30444628c5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:41Z), 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/QZTBA2485272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81a790c02d7db301bf061601d14e5784af682eb3bc5a2e6f2419043fdaaea9f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFW2496136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80c233a8c539efed62568ed916576c2b559d68536ce090c1ee49018a70039d6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFW2496138.
We're Going For A Ride/We're Not Coming Back
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c2212231528705f71417c11f159169c5506028602a4424707a4f04a52eedca. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWFW2496139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb9e759873440128c7f136532e1f8afc05079aa3d13ebf4b478fba53585832. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFW2496140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ba431a668f3be0e891c2512931a4be38fa3581211d8f66d2db53c0cdda4d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:48Z), 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/QZWFW2496141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542795a70761c379e9b06a0043346ce4927efb1155c9d6316fcc283427fcd63b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6K2518395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782a4511c103bebbbbf40cbd7f0c4df3d67ccdfe707b4a3cae90a5f13fa96137. 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/QZHN82572029.