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 0x302a41b4c148d104e0c9335db4adc08c359d9870a00f01ad4e82e3dcadb99325. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e925a1b-d6a7-47e8-a08e-32e5731c9e5c.json and https://artists.proofprofile.net/proofs/artist/4e925a1b-d6a7-47e8-a08e-32e5731c9e5c.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 0x0521acf85a48427163692a0e42de38221fbadfe459fee90b18d108253447907b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM92433409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59916ab710a40c15745ef31896ccbc644a16f45d4833f45cd263d20d65606c7. 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/USHM82415169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8903fa42dd000949e97cc0c0ac5d21e4bb6330f0e005f410ae8269914252dcd. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USHM22485266.
SAKLO MATI - FAMOUS TIMLI (TUR TONE MIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2f32eabbe4263370f0ca9efb42331a27d192cf866dab4f759f30fc24de31b6. 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/USDY42438790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e27ea3b7bbe4f76099f7cd7992bc55479d87b595b1ee108644949dcbfcce8c4. 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/USDY42438779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141541c2c91e5151781d2efdb29b4a2d4cb7330cb1983f304c40203e3e35ba7d. 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/SE5BU2478196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a888449d256d606b88f49182102a72622918ea3ba123e1e648131f59a89195. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USL4R2339504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8b8e971d13b5e75b54ae451c876bf060d5878f773ac1ae9a69fce34855e346. 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/USL4R2304020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4877eb0e24fbdad2b342970fe3c80bdccec11d9c187497db60c6ed942abbca. 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/QZMHK2353754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c298cbb38a9269c6ae60e6fa2125986237b7d2799a08b477535b76e3a3d6220. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USHM82365162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094bf1aee0544ac368691f0e323a2e9a0e981a1d0d358baa2e73b83bc62f4c06. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM82352376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2fc0d12e6e6668ca0477fbdff897255eee7c64c115534cae19926f48a2e822. 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/USHM82336135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e91aa0534b1f8f6d3774709aa1e0e36336b04c19b7c2b4302f68a1aeb948af6. 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/USHM82319710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e0581f9edd2178cfdcf17b03a1d541bf7c652fa9e8d9de42488bdb80dd8ec0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USHM22388771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ada14e513889dc7d976bfae702977411e249c2608e5671fc5df6ad941a0538. 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/TCAHB2329487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139a8621540fb305f4bc7851ff4d68b86188c77853e7a0b7b34c0263ed45f0c1. 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/SE6HN2317126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3e6379bf1744f00f813a9d9a22044677e03ddbd1fa42e641a31d4dfeed38bd. 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/QZPLS2143815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5c4229c054563b0c3d0c85f36a674e04081587840fe5bb66f773ef258dc358. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USCGJ2218453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97cc3fd25a9060df02ed30dc427cbdb75eb1ffe2faf1e0e3221c2b3210f98a8. 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/USCGH2269593.