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 0xb4e0b9d9682d92e2e82f1f56e3bc107f37a4ebf945b3a3df14bf904e1d29cef5. 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/b15cf203-830a-445c-b7a3-d8bb2a0bb740.json and https://artists.proofprofile.net/proofs/artist/b15cf203-830a-445c-b7a3-d8bb2a0bb740.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 0xe746624193cab3643a27ac7bc1c19b998d2e79ef7ce918cd091d5d0f89bc50e6. 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/JPE101900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e20d444b031bc3813a77fc82099adeb5944bacebb42e81d712f80bef8010b5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE101900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12024d5dba26190e468ef2e4998ddefb6b87c2c6aeb972bf1804dd51a7b6f81d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE101900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0570d38384f54681c5326ece3113f4e7e018b9c56a328288501f1f06631f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE101900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4f3ad8201a5dbadf9aff3696b5a150fa1a552bc991a6e37b3d4d0d3b02f99e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPE101900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc1521411db3f0dc402ab51f075585a961f82545ed0d51d8941c8c6ccdeeb9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPE101900670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28438fa421e5c4425d603f7f3daed349d76f12a023f8966cf891333a06be7cbf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPE101900690.
MONSTER HUNTER: WORLD ORIGINAL SOUNDTRACK
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16251764b80c42658de7db8484cfd9bfa6a53b4ea3a8cf2b8bc3dc05087d7ab2. 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/JP92L2415510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1838c33fd9db1b1e46e33ff9fec85bf9fd375e96e645445f546f6535ccc7be67. 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/JP92L2415520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62467d809a24735d613e695006c8bee5da0bf3e65f959eadc2da00e20dbbe1c9. 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/JP92L2415670.
Proof of a Hero - Monster Hunter - World version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c3961e3b687670dc0fb8cc79c323e072e4868ff3f8b8e2d41ba8746893df21. 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/JP92L2415790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf421b90067216af930b8b39f462265734c0dda056860b4e068b76778c40cb67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JP92L2415900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b2c8b808de256350b8d8c3ee69d42dc9c9cb976fa6d9b9426bef106a284ef1. 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/JP92L2415910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101beb9bbcedab15e45b009be90d76c149cf0e6beedb63cfa6de5ed76b460894. 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/JP92L2415980.
Monster Hunter World: Iceborne Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad097c563089539c892848b9c706896767efae6366287aadf2c20a94dd2671. 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/JP92L2411220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e858fe13391aef8959248f5dd76c0a4b5af42e658a035e82fa18cfa05ab4c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92L2411490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc1b60aeea60f67edf184057f77283f10de82c6ad7242ef970b3921ab73c3a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92L2411500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bf35e218264d37e225954ab0b48559c6cfc302b688cb1b968cd043460cf5f7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPE101900200.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd85a6a2571a68bbc213a008ba5b5f7a4eea25e2e2035511897d6d0ccd783ef. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPE101900620.