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 0x68b01a934913e5c7f2867353307ba79072cd31af85e22adee2a49dd29efe4971. 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/054276a3-f9f2-4af2-8849-40e50356fe4a.json and https://artists.proofprofile.net/proofs/artist/054276a3-f9f2-4af2-8849-40e50356fe4a.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 0x4ba1df251c7feb8ae3784e923bbe915f3d9cd9327456523d990ad774e333bada. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTV32332510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5dac725c618fc49a34df1b95dd91e677a07747c4a9276ebad5094e63e27d21. 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/QZTV32332511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc2959f3fc810b4f2c228824826c8d4f38e238963fe90e106c10e70540921d. 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/QZNJV2385094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50aa23e9ddfa8627f200ebcf585523e74f063eee50c93f1dcddcd86e70f833d. 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/QZTV32332519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd007c9d536fcc7258c8d8fc48449b2448973ef70205decfedcb27780e224a7. 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/USLZJ2370170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b87e6368546b984ef87c0938c8c6d17a71fb6c0173c61842f88540044c7ccf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDE2456061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266499458512b170c7c4a9d29745bc3874ec8feb9ddb8c991ab2fa69cf2f2db7. 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/QZNJW2431028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67270e748886e7996116fac99aac57dcd7ff950dca754a2c2a030b41c951b405. 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/QZMZ92434512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4afc2748826965412672a8d6995ce6b68eec9b5b264727cde151911d1e7cba. 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/QM4TX2406417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648d38e8e19ca86c7a7ab28c6eba9964e0be6f4a94cb12acc9d96505911a454. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2429909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df4bb32a26c7ed0b04bf4ff7257b7aa1815b71507737bd122148f8be335ceb. 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/QZ5AB2425779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64de09307ffb2b415f290ee90c27f4285201c827c5f303690df4d9454048a530. 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/QZZEC2301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8178307ae0fd7fa39b3439a8812970fcdab4c52a1ec37bbdafca2d4a219c36ea. 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/QZWV32382847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd04bcbeb33b89a237cf5470a58c7d7745252d671a99d62055fd2ef5075da78. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTV32368660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2e7b7ba69f2cdb3f6ef72928a6cff51995a894776f07a6eaacfe05e2d19db. 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/GBRKQ2382373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd007c9d536fcc7258c8d8fc48449b2448973ef70205decfedcb27780e224a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2370170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec352cb30043905cf99e720ac40e835decdf681bdcf4ad00964774895f0af1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLZJ2370232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e21ea488a8db92de719b62ff6c4c74f031efaa62a3a239a90b2784fad7bbd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2202266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314d5708e61bc8bcadabbb0f4b5db1e37ea20f80c8f03345d6d807610fe43fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWY2208653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d31654967404db91481b050e6fe54f18c14afde9aaa6d69700fbea1d2ba78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52052818.