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 0xcbe9c00fb07fe095c997152979f5ef755f45ab53cb10d72c973d1ab658c8618d. 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/d5c04dc1-d9d8-4a92-937e-d541e883fc9d.json and https://artists.proofprofile.net/proofs/artist/d5c04dc1-d9d8-4a92-937e-d541e883fc9d.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 0x89d70a34250c5ec59f3c9ea3a6e053328a386e0d57c74c59aeccc6327d857666. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM21773741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037080bda2d36bb14a6b57e07543b41648c6d45d88fb27b78a843fbdd1831829. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/USHM21773746.
The Wolves Hunt (Chasing the Sun and Moon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41566b0b96b7230a259775c9b91265efbef00e1bf840cab91a3a1a443c63ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:49Z), 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/USHM21773747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a094baac7ad451efc14bc7d771160ece7afdb9d66db8bf202dd81a17c07e77. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:12Z), 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/QZDA51952733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f52ede0c18438c1f68dfe5680a817aad5641692722cb3c5aa05de340f44cb. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZDA51949790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8522d53dc1cd2e92afa3a8bdda21229528f54f9a1d2179383f5b5ad8f4ddfc67. 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/QZDA51949791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b190d831de064039d1c07358dfa88b32c4d9a3b225f3fef1168101255bfed71. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDA52047123.
Spirit Elk (The Prongs of Algir) [feat. Velitas]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf692b5cb100266eeba6aa5927a9220053e4d571161e17fa32b06a7b4fd946530. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZHN72083675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4681d19bbaa3fe177c4d7ac7bf62e2038db9c65bb0ddf5416f3e91998ff50a3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:47Z), 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/QZHN72083676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86518c38e277cb15c6b18b87efe201672afc9c4b241031dfa5991025a18b75fc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZRP52497311.