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 0x20cca15714a12cefecabbc3d81a9e29ad0fce7a868174416b7cb5a9928b101f5. 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/04ba12c5-dded-4a3a-8332-26fd9b6adedf.json and https://artists.proofprofile.net/proofs/artist/04ba12c5-dded-4a3a-8332-26fd9b6adedf.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 0x91e1f6e380a4d0d1ce81847403a4a99f63f1834c46fa9a93040d6111eb83bd8a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZJG51981827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ee13bf72058bdb480c2586de9a62f40dc46c3ca71d8e37d11f608b3855397. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZJG52058056.
Go (feat. Jboogie Fto, Shoot Em Down Lil Vic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe420b0c18f3a55f8c5c59ab50eb4d1ea83d1bc981263ece29d4d9df1bfcc4f38. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEV2127775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb806a8cc22c3daef5e01c246d3289568c0e4ec401eff764f878f794646051fc2. 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/QZPLS2178702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4197e281e373b9d95fb50feba437d452ab3c9299e50f298783b2b531d902a3fe. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZFZ22210852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0c891937c8d65d629835abd304982fadef564a458aaf209050cbe4b76f50b. 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/QZNWW2273284.
Coffin Freestyle (feat. Bloodhound Lil Jeff & Bloodhound Q50)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5667901e1dc9dc61729ad410c0768b09a247e6bc178f2ec082be1727c68ac79c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTB42309158.
1017 (feat. Bloodhound Lil Jeff & Bloodhound Q50)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dacdb81fcc2606f9f0011db0ef59b615f904a3ce08ed26e76c32d8c385e968. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTB42309164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e99cec3cf1d89faf44484a8fcf6e665c9a146c474b14959a3ae1f46a8dfec76. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USLD91772472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41d30dbfa890f56e004d635e1d117f2150bf3d5f25d4d91926f45cc7bcbae1b. 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/USLD91772473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be391de1390eb5e2be0e0b04ecde31ff4eaaef480d0e6388e0ff523192e87c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLD91772474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfb4da44ba674e5e38ee3c5d8280f537b32fa424b10af14d0c705e9d94a4595. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLD91772475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa904d0c3656754f5f58565ec6d3409d9f9f68254652b1fbec938db31cd9460e. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USLD91772476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204ee1a2db9697a4ed5310fe46a1b21cee771ccd452e3355175cb8ae7076d12. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USLD91772483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96433d3bed6380bca2cee944cff90ec67ac2bc36780fd5e6761f29ff867630. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USLD91772484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b6052e1015b04c6094838dbf63d33f556c6a6acb3394bdc1909ab2a7ffccf0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLD91772490.
Run But Can't Hide (feat. Bloodhound Lil Jeff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe7a27b9a76aa73bfee58a1f0306392c219e5e630613a46e9710595c5ffc869. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTB82495913.
1080 Trademark Records Presents: CEO Trayle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef84d76e636c60f5f95c8e8646ff792b174c0283a0525d9c959eec9ce2efcc5c. 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/QZ5FA2050566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10931aceba9afe397ff687130df15fbe0e60c5e42a6fbc10d4a8ecd87f59965. 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/QM6MZ2214340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e3b888001ab32898aa6fdbd3dd5cbedae5e9ce86b289b3ee68c1108b22f26b. 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/QZK6H2465863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb828d127f1f0fc450d5c9abeec713ae3476cfc7b7f8b3c9547a52a3eb860b9dc. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCAGH2223327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cf5d2d100c61972200a0f69eece5f7eb5a8dc4c523910658b4e15307d85c23. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAGH2223355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ed16f5f2edf2da5fbc5acf0963c06e3618f3223179e21496b7be25151f5e7d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDY41530665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faca5b19dcb3f530374135aa2cbe27f5064f20d262f4fb95c902f8a0dfbb31f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDY41530669.
No Option (feat. Jim Bean & Jb Binladen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec1895bfa7303f3ed09e4974751a8acbf4e872382588807e4fec5c7c86056a7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USDY41530673.
The Gat, Pt. 2 (feat. Prince Dre, Jb Binladen & L'a Capone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074c8553de15d29d8f377075edae84674a988bee34dc4adad24e4c23284e72a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDY41530677.