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 0xbffdfb4ef7f71c6d62f30eea89ff4921ef652a4f785fb2657980912192eea61d. 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/9e1ef82e-f254-48bf-8543-02d77b72ea6a.json and https://artists.proofprofile.net/proofs/artist/9e1ef82e-f254-48bf-8543-02d77b72ea6a.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 0xc3ae1e4bfe978425e304061d73e570887cd671c1ad49125fc5b8f290c273c2a3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USQX91500489.
J-Doe Presents Melodies from Heaven, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00aca978305903f42079f81923dd9dc4b6a4dc1559d6c9ac1d6cce4bedbd201. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZMEN2181107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9364893aca0757659b4caae62a93b806429bc049a0d75d60770dcbad65b2780. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ62299517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81461967fd71eefcc32933cbc207edd0e5c61c2746bcbe7612da52c3c3bd98. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USUYG1274248.
Busta F***in Problem (feat. 2 Chainz & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7174dab2eeb6283c4f2415dd9aba028ce866525403b6cb3ecc622d021fe8e109. 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/FR5R00902462.
All Gold Everything (feat. Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735f933a1516a62fb542bfcc664f6698d5f66bf1cd293c88aa5f7314f21b673a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR5R00902464.
YMCMB Mula (feat. Big Sean, Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3a3275f655b7aaab0d19bbf0b0fc1159fb394683f8d7df37a5f516c5fa854. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/FR5R00902465.
Adorn (feat. Miguel, Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52b06c5716d928b78d1b84f83ed6e51613e44b8bcd3ad48dc85a70e4880c73d. 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/FR5R00902466.
What You Know About It (feat. Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d13a45f4c7600776800a417b22640e3f301603ac6b6c14525e6fb8ac89562. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR5R00902468.
Freak Show (feat. Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10d33101aa5286626d6cfa7cf3ecd1e9c8545f8921b8ad297f85616ea13967. 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/FR5R00902469.
Catastrophe (feat. DJ Khaled, Reek Da Villian & J-Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe6545e81dddd874b310753bf34ef0a2482cc08c993102d360758761778442. 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/FR5R00902470.
King Tut (feat. Reek Da Villain & J Doe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50c61004b20d6597602a698d27980267b7040dd07f63e4e307feaeacf918d8d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR5R00902235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c157f5ced5f73aa61424e48a0f2dc7d75f2f4f266b312c96c87160ef2a5a2c. 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/FR5R00902239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507656a9d41372245b0e029025f9b94ae362241ba0be964096ec7e37111ab38. 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/CH7811114638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded6bca1a084d7449969a92d2b94a9c163d84dce9eec34583525ae1c45bf8b93. 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/FR5R00905835.