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 0x6428d4967d8dd31cd09ab5121156eff3a5ec4cb1fb83b71ff4a5c164887966bd. 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/f89584e0-38cb-43f7-bc9f-17a2130183ee.json and https://artists.proofprofile.net/proofs/artist/f89584e0-38cb-43f7-bc9f-17a2130183ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Want It (feat. Young Dro & London Jae)
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 0xf3a012dc0578610f38151c7ca0f872743ca5668496636545348ddc8b5c983ca2. 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/USUYG1152039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9d0e802e311f450854ce3ea009382fb60142fcdd2cae7f9524fb933b31668a. 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/USAT20803735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f629fc6818f866b390cfb382b52cab820975a549961b6d2b2bcda0b7836a70. 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/QZNB82417673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97195f82d9c183f01e3cb28688a80295ea284382722310ad85d71f0f312860e1. 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/QZNC62320101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0936f8548ee69e979ad6842669846b6886b334309b3878372d6e15b2e2fda3d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNC62320102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c281826ce7767fa20c6ad523bb5b6cfee71dde583f216b985455a05fa47660. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:55:28Z), 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/USUYG1033858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1845eb9f09294fd76e7ed2d6e7fd40649808e98ab979105446f38ccedcf6ec8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USAE81032624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce22b84769c7babe45f8625b91efa99a130bc9ea955571541486eedc9e340cfe. 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/USAE81032636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e9171d1d07f87650176ae5d22741d0e8f508399595538077cc9d98a48894f9. 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/USAT20301914.
I Deserve This (feat. Young Dro & Mac Boney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fda24971e28399e5d8536c17317ce97d0ca653c7473ee9d514d06d922a6613. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLD91710208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4158b5b9ee86243682bcb46e4c77ebcd0a26577dc0014434c788843e28a2077d. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR5R00902907.
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 0x703bbbeae8dd492cc8d26a1b1e32e963666cd680dc7105d941b114c2941ebaff. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USAE81032627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e89c16cde8b5e920142d83b87f180605dc3a38db3b1e50031a5782ecf85ce3e. 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/USAE81032643.
Problems (feat. Problem, B.o.B, Mac Boney, Trae the Truth & Young Dro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bbcac963c2c3dc5ab8ce17667305e181b0aa59c253338583230f8f367915cf. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USHM91306654.