thumb|right|300px|Eliel Lazo at Aarhus Jazz Festival, Denmark 2011 Eliel Williams Lazo Linares (known as Eliel Lazo or Gods Hands) (born 1 November 1983 in Havana) is a Cuban percussionist, songwrit
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 0x9232230815502bd867f6b7ea684ea911473ee0bf9d36aaeb7f0b736950a2785e. 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/4b4e5d30-2969-4f18-abe2-74f020b58d35.json and https://artists.proofprofile.net/proofs/artist/4b4e5d30-2969-4f18-abe2-74f020b58d35.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 0xc64b27406c641f3da8e4f6e04ca15c95838fe2144df4a16e92d99b64b29a0cc5. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DKBDB1600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda735a789e00b7ea9ce061408f87bf18075814de3c10c71932f5af0461e1fb7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DKR431800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4457c189311f62fac41cb8e38b020576a5e758365e83dbf9707b9948872f3bb. 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/DKADG1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0fedd07ba5012bcf6adbc504b2cc0eaf8a347ff1f0faf677660a8d5b71db55. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKADG1700541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697ec54c61f4620d14b01b6285b6303ad2b34df9a8e165b6a36627b8da384ac9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DKADG1800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d7d1b71dee15e303881951420baa8ce88385a85f6813b057a20bb990869225. 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/USA370673237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4915575d008e1b499414c14e7e9e4a54c749df5c8f5f35a3ec61411a92dea108. 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/DKBDB1002801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715d5b4eaaf7be325bb866bb410f640b91a8e631c4f15122b81054711f8fe0e. 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/DKBDB1002803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da728169c0691c63286f7ff8de297315f0bce87aa0b148d111b6984c16e5a46. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DKBDB1002804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70743d30c11aa329ec528adf48ce2952ac365e42b633335afe3740d77b8ba908. 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/DKBDB1002805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e5464eaa1f3dea18c14b17c032948c4770d2b0c5a1beaecc8b52676a4efaca. 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/DKBDB1002809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae298fce83729689bc418fc18b9562bbccc7de69502b168173551e4c117ccdfa. 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/DKBDB1002811.