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 0x538d8b4c0e7b17c77cae6eec52a894484add1b273654754d216e52f3b1b7f729. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c2142b7-4532-4ed6-925e-dfdf073a62d9.json and https://artists.proofprofile.net/proofs/artist/4c2142b7-4532-4ed6-925e-dfdf073a62d9.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 0x53f58dc3855fc5231cae0da1ef4342381780b7180873cb0166d0ec9d529ff24c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPZ922302414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c4e2c4ed4dd037c663c067a09d21a978d05fdb3286061b32c73fc1da1d8e9. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPZ922302416.
インスタントジョーク / マイラブリー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b53b209e87412c1a1003d72a5d18ddf213d4aee8647635b394dfcfc60fa3d. 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/JPZ922308755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb986e24cfcc1ce2d220265543a6564fe82a3c3839f7de462b5e89d320bcf7aba. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPZ922402072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541b50136e088a08dc811c8d443e7e2b6e5fbacbe2b35cc55b81084e172fa559. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPZ922402073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62562af56dd457503a42c713fedc2783aff46666b065509e88894c8be2a332b7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPZ922310392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf41dcb222a4cad4a6d34bce29097aa0e771e699a0c887f078c749bee7d85c71. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPP302400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d566db6624b1fcfc105e0a5a4242c06c2fd796caf8368747e2d49ef403812. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:29Z), 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/JPZ922406031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff46b642251d820419bdf1b16c084a1a4343a4c0cf294e0afb12963ab25a7fd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPZ922505581.