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 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 0xa01100e72bf677365b6abdf974a1acfdbb985e1cf77c2076e86f3944caf238b2. 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/ddbe4768-082d-41fc-9a32-8b604efbef07.json and https://artists.proofprofile.net/proofs/artist/ddbe4768-082d-41fc-9a32-8b604efbef07.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 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 0xc367e00fec3ec14c24008b82d8c07cb2a7c028ddf25a8c7ddfaf9b3952226afa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR0042585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606b91ececf435e8f500edb4497b2661068db2234ca8503c54709472cdaea85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNFJ2118506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edbd071fdcb984acbb08646e75d22cced9bf3e46184071f2d34732827d4770c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNFJ2117652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda79f36b9cbd0615261fd1796f34b139c8b19cc53d4b2f634032d1461f9a9b56. 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/QZS662121702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc238ccd535138c32a2d385d4b352b5d62772e1b07c3a02076d17a496c5ca7b62. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHP2090959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d25e007c0e33b86b6ea25f4744f4afe536242c43a38adfd0a38e238a482366. 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/QM42K2298186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6979c5f23d7541f9813ab7c65b24607a9f5095d6119095f7afc461fb26f914e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS672125835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5903071072be7d9847971eebcb829c963c66ea3ef4cdf6ab8369a9ba8ffb79. 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/QZS642212297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009a2045ea77e9d79f02efbf44dfbbca016371abfabf11ac15c4ffe01933cf49. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHM2271360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6384c5a2690e3e599e1a2d578c352838f27e32167a93b5f8ef242ea0567e20. 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/QZMHL2292787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56967f2a24547fa2b83c06f1191cc8fdc77729cfd81b4b232218036bf93590f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHK2215774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b08efc209de70759b921618371d5fe9ea32b211f965a67cf8d77d072005eec6. 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/QZMHK2230563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a577fe4ed3e77d46cf1a1c10e2d9d7681f8eafa89712039412cea44529f7e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHL2296342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9850915c4c5d859a0ce22a2bc36cacb1094f6f01843ac08e7d88d7bafae58736. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHK2266079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40d28ad64a81ed7e172a2d31ad4b2f2ee89a32b963dad07e1637ed9a3ee03a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHL2261696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167090ef3a1a308987c2856db8ea25434401b2c1e4583516b8f8513e5ed2e4ba. 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/QZMHK2272832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc078dd59e5b4d5b745c3649291f3000c5892d987fcaab2928a81125548554e1. 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/QZS672248955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90043d4cad0b5c0cdbe17aafa665d7755868050950c0729a224c9d3c8dff53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS632279005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ebd461a424c3c2599f2721ca152402ac09a5b9be66a7af60abc4aabd18747. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS652218116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fae88434c5c97783a4556fd576f71e39b324a7da3609a598f82ad26b95466c. 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/QZS632293706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ab110e05f538a62ad76057e57082c10f02cb8f9952c45fea88073aa4c5f6ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS672222016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090960f48ddc1e01a0f93f3dccd4c29018559eeb7cead3246ffd0d75990209ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS662276479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bd4fcac6405ecada971e969d0439c9890daa51f86736d20ef933996df4eeb2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHM2265489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668282364d7bbc7f623137dde7270396ab16087e0babb4444cded3d7fe58f0d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS632223032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbc028ff7f9d39728ef704edde1f71e004a515ab8fb97e51dbadb94a69d213. 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/QZMHM2205530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc836595e016b895855f7d284064aaf62ed37898e5877aedd071338f84357ab5d. 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/QZMHN2213755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28584d9097c936cae90f95f132bd9a51afa119ba96bcdf3512fce669343a0df0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS662260503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66f3dafebd02229347038879a486456d5b55962deb6da36b38c055d6a2e03ce. 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/QZS642237615.
Astronaut In The Ocean (slowed + reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aafd8fe7a10b285fda2cf3c5656b6641d7565b06d652f25c3fb2a4e13f83092. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS672231017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4963a492712c86209130ea55e0a57ae4220083d426d072a6825487030245e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS642289927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0e8f33f4725679bfa519e50e7809a7756ab58d384c58513720389acf74ce3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS672214561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20af41adbd90f4a922238b144e5eee15df7cec018403177b5e7f7aff0c2700b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS642214444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc97b9638f130fe3ef2cd7ee2cb942137847834238a5b23dbd3c68c9ed249263. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS642294184.
Believer (slowed + reverb) [feat. The FifthGuys & Shiah Maisel]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c0851c5b6283a37e7c9c937c83ea470da614fd0abd584c08172b3a9d51c555. 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/QZS672222447.
Beauty And A Beat (slowed + reverb) [feat. PHARAØH & EQRIC]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74374cc33351a4a3d941aaaa275a407ebfbd8345203e50ccec488c6ab3b2dc8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS632257958.
Safe And Sound (slowed + reverb) [feat. Unread & Rakan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bf93c655d83ff7bd94532542b74058e3cd94734d6c2138553c60658cc13f26. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS652271293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a1e8bddddb247ba19cddba9cf3067f127fc8609b73a2ffc62f5356fa7b122. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS662258900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6a5ca7d47ab7927b64de482398917c262caa74ee8a779bf6c4508bace77549. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS652263491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388e8374afe2d555d6675c8d3afe82cb2685ebbf1de2b8266240efe270627dcc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHN2266016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8975d234e9836d49f735726e4c9228376a56ea995121db500c989d68194efd3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS642262159.