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 0xf697709b2f1de9314f21dd49aa02e69279b94622f80dc847450c71ee4399e46b. 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/c182fc23-bdaf-4994-afa2-7f381387e411.json and https://artists.proofprofile.net/proofs/artist/c182fc23-bdaf-4994-afa2-7f381387e411.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jan Jan (feat. Gary Bartz & The Greyboy Allstars)
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 0x615b7fdbcdf17229834d0de4bda29c8b1e5182642802dfdae68e847fdeabd669. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US78S0530901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3070eb16d1cbc715c6cf7abe680e75873552661e9da1ab0a117ceb3cf6a7c7. 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/US78S0530902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600508989cfbcec1aa79e798c2de5860b388c5aad9510fcaf236f2243c630551. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZES81877735.
Wet from the Press / Feeder, Doctor, Talker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbae803acd97614a49c38b1de9241ea1503d246940a9719882b939f2770c129. 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/USME32100765.
Or Else (feat. Stanton Moore & Craig Brodhead)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb2b205e1631b5cc097b66ee38c2316454817923735a11a579b180abaeae4b5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USME32100761.
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 0x79cd8cf7118db136b76cae029380edede73be9fc6546fc4281a297d9f675f5d3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USME32100762.
Aquarium Drunkard's Lagniappe Session, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fdd39f395d008906426ac634273326fbc78bfb094cb1e9dd02969c31d42dee. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:19:21Z), 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/US78S0507605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db27fc81e081ce40b1c588167f6e83f66ec27f04f238998ea772734bcade009. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US78S0507613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ead189340a805e6bb612e59df5df1dd3cbe6a04cdf6009668da82ff7ca2489. 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/QZAKB2326838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c409777ef87b6a8482c94ad492cbb365ac9263a9aff825d14fee1d0c5824a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAKB2311741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade888722213f8a196d717092db3e325d8b8ccfe819a0a7a341f1650c877d00. 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/QZAKB2339868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40198a80866d2f2454456b39c29b33cd87104a54357d6e5fa38ae719b03eb5ba. 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/QZAKB2338833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeb80a5112c430e24142c2020ef485c32e0117f532118c274eb4c5d215fefa1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZAKB2339874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066a9706c33a723481189ac3dfdba0f71c75283f321bfc5f8a10bcf49f84550. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZJZC1900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0622ffa9e3d3d7e8fc8ea3bb07f565503691f83577e3108e321f4de0bc05a6. 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/QZJZC1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf48ff505155011b54f6f38e5d2c5ac54c96ea88a439d71e391dc17d1914129. 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/QZJZC1900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a8fe9a15e17faeb4417bc1b9f883685ba89d5bbd7120fcb96b4fe5e5e6f31d. 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/QZJZC1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a76dc51c8ef8afa36b0f4091fd3b41d88b7f1a3b38cf943998c917c3521c8a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZAKB2339869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd114ee3de262015a724035ba98350f82c7cb5d04a638a95b21689206ca7f8e01. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZAKB2339870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2241377a575293f2beb4b3291c0b67ba60621bcf25e728e3a98ab430607786. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZAKB2339872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fafe323ed4eb36c23c2bfcf423de9da21de207c0ccfe805abbd299e40dfb7e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZAKB2339873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa020196711407c3fe8bc23f3d7792159ad08365df648d6daa66d0bbec88d4a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZAKB2339875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825a99b7d702f2dc5bf3990202b28bbc6be7af062dc71c80b1e9453dc17e4ca. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZJZC1900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f1c648530bffd876685ac0e203de11aadeed3f3bf388c40f4c7c9664526c3a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZJZC1900092.