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 0xdf41befe736385e21920cc47f95ec9eb8501e9502ead82950b1a491edd2fb9ca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09f47d00-dd30-4c8d-beb4-57a933dc6ec8.json and https://artists.proofprofile.net/proofs/artist/09f47d00-dd30-4c8d-beb4-57a933dc6ec8.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 0x7956954f62a7630066f56d5814c1122f5338e9936136a3501adffb3509fab58b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZS662132762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f45b1a870247b6c863b743193ac2950f492d8c3d4fe4a6b652ce7a90e20db. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZS642174588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f45b1a870247b6c863b743193ac2950f492d8c3d4fe4a6b652ce7a90e20db. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZS642174588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d6b19df438374dc5e10a1e7aacc20576575adc6d6ceaeb58735294f28ab8e4. 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/QM42K2295955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d61003317595834bdf890afa596c5001a7eeb1997e67a503934c0ef660d9c45. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QM42K2204586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e026b436946a7ea3794d04119704563ec9220ab50b511dc05b2c8c6b51c91. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZKDK2279558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3ee52ea1154fc24082e02b7902b54849b28fda59aace4e9c434394bc7b2bbd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZS632157432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d6b19df438374dc5e10a1e7aacc20576575adc6d6ceaeb58735294f28ab8e4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM42K2295955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d61003317595834bdf890afa596c5001a7eeb1997e67a503934c0ef660d9c45. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM42K2204586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e026b436946a7ea3794d04119704563ec9220ab50b511dc05b2c8c6b51c91. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZKDK2279558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3ee52ea1154fc24082e02b7902b54849b28fda59aace4e9c434394bc7b2bbd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZS632157432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9bb016027cb680b69e0589f7e1f4a3458f6f66f587971f9a0bf05d2f1ef30e. 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/QZMHK2277626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1084fa1b76f187de938b0faf5fa3e82b06d4df40928e0620f2882b9a6065cb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMHK2237101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1084fa1b76f187de938b0faf5fa3e82b06d4df40928e0620f2882b9a6065cb. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMHK2237101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47fee42f79e4eac72ae5e94a11cec3236957c853b73e930e5ed0f9eb073ade. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZS662244239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05bda888e9fa2755a69dceefa09ac8ffd72376aa9cc644030117393b13fda48. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZS642204195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c77deb8b4e418b58ce0724f3ea6b0a4f5d09edfc28c2c4ecd23f600d40db5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZS672235189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f214c54bb798bae57e4c074f5f1b1ed1d9fae9f0d9d2675cd215957e80e9f00. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:45Z), 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/QZMHL2323482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f214c54bb798bae57e4c074f5f1b1ed1d9fae9f0d9d2675cd215957e80e9f00. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:18Z), 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/QZMHL2323482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51ec4c712f3eddf08fbbc8cd7b199fae7a30ea826496899a15755a3f30830f. 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/QZS632311104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225ef91ce174b345dbed5930681e0a429e46185beed43530bb589d2cb3b1101. 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/QZMHM2424932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225ef91ce174b345dbed5930681e0a429e46185beed43530bb589d2cb3b1101. 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/QZMHM2424932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ceae8366ecf5e8dadba7323da189b9425ac63c6aa56d0321a376f1a1c1d8c. 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/QZMHK2421948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2b914894e5f1e7a1460cade9c3a821a5a21d8c097aef83d506ee04c01178aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM42K2427530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388da3ad56925385cfeb581247c305c0e984ebe44702e676b0bd9cd8ba8a788. 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/QZMHL2584629.
Guns - tsuyunoshi & Saruky Remix Pico Version
Friday Night Funkin', Vol. 4 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0aa1967982db694e3db1abbf85c530d56760fa6f9626a386d3f04a60e34324. 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/QZWFE2409507.
Ugh - tsuyunoshi & Saruky Remix Pico Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda2f1e02e7bbb444c601da7ad372501e8f1c2a5bbe759f9e5754dbb3d9c25e7. 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/QZWFE2409511.
Philly Nice - tsuyunoshi & Saruky Remix Pico Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda32d85e774e95096a08f7cd0b248f1c77baefa9ae7c04de957331b77f3834c4. 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/QZWFE2409512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d06177ca87db15eba908af6e18140f086034140df4ba054b356fd3bbe81ee2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZMHN2027767.
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