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 0xef40d464dc447b28a765cbbb8cb3fb03d1c46278462898f2395e610c1c1f7252. 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/e0ef7df2-f90b-4287-8faa-4ef8f9ce7542.json and https://artists.proofprofile.net/proofs/artist/e0ef7df2-f90b-4287-8faa-4ef8f9ce7542.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 0x56438ee58ef2f80e013ee967c28cec122daf938ebab723a05ad2ff08ab954cda. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:59:04Z), 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/USHM21614885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7731d4d0939c6f3e959d8c72717d4d4f210581573d8b90376a9bd8db029b6c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCABK1239429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad531276f3e740d8581a1e35279bfd482f2aa8012316127f7373545b8696b3fc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCABK1239441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a8442489e689dd3c3223e0d4ff3a60d1140b01ed06436339ca4f5c5003ddf1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCABK1239446.
MI Mizrach Shemesh / From the Rising of the Sun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a43c3f64b45673150db421851d789133480af0cacc54908c706c4bd3b79d55. 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/TCABK1239449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a8b9ff19268d00981a9aa5a36d9b40ec6d551686cca2c62a9373788f320afc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:26Z), 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/USHM81523379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5601fdf3ef7130b6795a15c065e674e8c9b58d5d5b5a7fc3d8354a13ba9bd42. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:57:42Z), 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/USHM81523380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc929ebb4e3d84243ddc69a98aabb92e6d370dab70250995046f7f09431455e4a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH1707004.