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 0xec0fa4d4aac25e70a5b42c72ad217ff873f817478f63c4e3fef64fe60884b794. 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/c5e8fc0a-e0db-41a4-9e95-e29c21eac644.json and https://artists.proofprofile.net/proofs/artist/c5e8fc0a-e0db-41a4-9e95-e29c21eac644.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 0x74c7a5e9df4517f169828015803089c7c2c1eebc42ba52b79f7041545bb65751. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZHN62120707.
Comfortable Sleep (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1618ef1a0e2344d33aaf79b8cc6db2c68975dd8f1751b30bc26777ba35a0353. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN72281860.
It is the most beautiful shore of my sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c244d2890176902b2c4b7153506b597365e472628d69b141ae23ecd3224245. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:48:43Z), 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/SE66N2262022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bce3b8a83cef6e5d6216ffeccfb621424528c6ebd75feb0d90bb427ef9b210. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6QE2351724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce33a8f63c28b9c37ec024f14b5686448d21fd8583652e9ce2fbcb880c777c6b. 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/TR3912300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0740bcb25560be726e6cd0df56735f0e506026de34da774d9f2bb245d23f2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:25Z), 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/QZFYZ2522533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc4a6d8c878aaa71ebeb41493d17eeb58743abe2146e774ee9b842b2e92a28. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SE6XY2529751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01bdd268aabdf66a996b9477e3feaa6bdf68eabe2b8e328ad76756eeadad4c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XX2527308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01006aca486887c09deb2b935115e35451b5e2a3b86d0732893b789a5558e1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6SA2514972.