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 0xd827fd99708f3b45e033eff1af79835403a1e17b10fcbfd11dda699274746109. 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/89289154-e5f7-4822-87e0-d248cca5aa32.json and https://artists.proofprofile.net/proofs/artist/89289154-e5f7-4822-87e0-d248cca5aa32.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 0x2d96098382254c4c78671f871882f4dd7916903b2232c44172cb410086a8a7cb. 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/USUYG1207831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa3c8ac927a159bc16f3743ea531cea590f028252ee99d8e470ceb0656ee913. 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/USUYG1207836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b466d3627035c22b8d9b35b1a36bf4103a05281093de49e00b58f53a0f45e00. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:37Z), 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/USUYG1571533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8af486c5e11433f842ead9e087a2b1b41c2726086152441e57e7d46b909e412. 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/USUYG1571538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e26261f4060fe1c2f33a863585941d98d0098574c0525cf2b2918402696d35. 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/USUYG1571534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a11d614c2ca2f6d7e71d818b9ea22cb99f56676fda874bf80c44ea0368ee85. 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/USUYG1571539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f6ca5d37361d8fcaf134b51f949ad269865420dd6f27d19269a1a1fbe801d2. 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/USUYG1571536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9a53475ea1824c14b0496fbe8eca804dd71624ccc63554557884ea9023a48b. 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/USUYG1571540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb968340fb09fd2e58d53b2b370c94b78fe9b85db5b6a5a9458d6db088e249d24. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:50:56Z), 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/USUYG1571537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152178a7222ac1482bcf521f9d9e2ea05714cf081903416503e7b491f1a50ded. 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/QM4TW2357526.
Another Play (feat. Freddie Gibbs & Quincey White)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3759c7b3d686063b41b72af00562ce3d0372a3f7536e13882b6dcbeed445a73d. 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/USUYG1361438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea729404a985a981bd2fb919321f3db3196b49684e1d2d842b0a0bb440fed887. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:24:00Z), 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/USUYG1237101.
Blood Blood (feat. Lil Freaky & Ackrite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f21b1be32541c22acbf9d2e32ad989950e7136c7c6aaea66ed27bbd2b67e32b. 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/USUYG1237105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79406e1c5016f28fc3aa5248a0199498bcc8e310e7e9f3e0c49cc20b01e7057e. 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/USUYG1598873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aa901eea312eea775fe8c1de52eda45b7b66144a3e6ebb0211cd7a33e972d5. 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/USUYG1565238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d05d05e3f2927757edf0b678f169623c3e34d8e2e28b02eac06d3446d7ebab0. 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/USUYG1551141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9820ae8372edbd1450d615698416e53fdad779734a0a679e488410e6818abb73. 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/USUYG1521881.
Winner Talk (feat. JasonMartin & Problem)