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 0x1b28a0323aa2f75636b133430a24bc61107e8158971ec532b162d3d865c84216. 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/64ba4568-745f-40d3-ae3e-0bd32a8cb60d.json and https://artists.proofprofile.net/proofs/artist/64ba4568-745f-40d3-ae3e-0bd32a8cb60d.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 0xc4f8bf2f77e4e1b359e4ba83a222151011217cdb1feb20b21f5e19802624089e. 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/CA5KR2078352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728149ee30de6b3c39f256da1db1f89d94da611b77fe777bae817a5e1a842081. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CA5KR2078359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6515b95af7d55192628ca3f9b89891737e0404b7d97d367d3f9ecfca4cabc. 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/CA5KR2230423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f46dad89f6bf43b50848d5a07c62e847c87cd70cfc2caf57641f97bbb8a190. 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/CA5KR2270828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602f944cf1ebc8145a7e80ebd23f7f147e6278c9701124e60335358956dde117. 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/CA5KR2324920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011cd21b7199bb8f4681288a13da072fd5063fa638ae0340ac3d3c221cd865c2. 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/CA5KR2347174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77be8a7199d94fb4e8d4d68a7017fbac7e3826e67b01a0ba6219e01adfc2d7c3. 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/CA5KR2347259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8986433210c110c3c6036fb0896917bfcdf444117dfaa3cd729320a278dd21. 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/CA5KR2372653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd664a695c005a3d39fec89dee94db586575945800370c4891393ac4c72f6af. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB42382742.
Gozame (DJ Alberto Mix & Gustavo Ríos Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9769843e03dd887936a4eda13e9e3e9245cf82559edffac5662364c1c9bbf6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2443639.
Gozame (LOS COLEGAS DE LA MÚSICA NORTEÑA Remix)
Gozame - LOS COLEGAS DE LA MÚSICA NORTEÑA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ca5cfdfc88abf43e141c12f3f38bdd9a20e0cd62d16730997e2191dde16d09. 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/QZK6P2442979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b60945e52f3c02c0a18b0dcb74522671b537f903f416addf54709b6d745d74. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZG2X2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c32c93cc9794d6aa9b72b71d053f1878706d1de04d168e4a4d488bcdaf900f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZG2X2404378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51975f883aa7522bd8504e6b8b016ec0c634805ea71a07b4f5e2bf4663c990d4. 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/QZG2X2404379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffefdf3f1276b8eef3850848df40644995856941f84d4b6c78b43d84904d468. 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/QZG2X2404382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c07a252f482c368169373ae2af8f304f0c1b9041244f2a3500e84d9ae9f8cf5. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZG2X2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b60945e52f3c02c0a18b0dcb74522671b537f903f416addf54709b6d745d74. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZG2X2400070.
Gozame (LOS COLEGAS DE LA MÚSICA NORTEÑA & CONJUNTO ANDALUZ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389b862d04629e33a7915a95db25bf08c06d21ca1701cbeda7fe7ace78f63c8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZG2X2418559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a669f3c8a6cfd720523546eb2fc9516243eee79769ebad8564f885d7a22a1a. 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/QZG2X2500521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c429bcfc66f638acb25dd4cb9879c0586f338fc2b3226ee6f503f262c0de2. 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/CA5KR2447833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43937a4e6d75d07481e087080334e9186e6b91e18f4648858d75730764c4fdb6. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZHN32255683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989fba08cff4234788198e1c3458a400cfbab93a107bdcb80d7640f7669c9f6a. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZFYZ2039159.