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 0x1494ccdf63b885d8e1d94aa7785c95ce9d546e898db03e3be0ef88d3eb36f9e8. 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/b7ba62cb-579c-4b95-9916-f8df8aad3369.json and https://artists.proofprofile.net/proofs/artist/b7ba62cb-579c-4b95-9916-f8df8aad3369.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 0xd26545d067372cbd54eb8c7bf082c4297c69c9ffbb534d8c9a9135166123447c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ1698115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79fcdf4245ba9596f1c64c34d6197cf6a130fc1c2f0b8e0c3e93ea9521b10ec. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCGJ1698116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69dbf4a2a395f762ad0c599a881572e83bb70064ede740020c8e52374010e8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USCGJ1698117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3189c2f237f8b0c299d3285fa0e8b6488ffd1f09e825694cfa3cd7a213db5d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGJ1698118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7d8ab86088b718eca893e59bdfb42dfba45867d8ff3690f63030d0868e6dfb. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/USCGJ1698119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d7ede5d0b249dc436e38fb6b3efd783ee21218f9933612bfa3a08296fd5368. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGJ1698120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b6051308eae69d38a9ec40a512503703e56eb01af35a171b435e69d540ca3d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGJ1698122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8616c18b2a36c6f660f49b0bb096eecf299ae474640cb4af90fd779296931945. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:26Z), 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/USCGJ1698124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e0c2d8a28e2c83faa2f239ff026335933754ce3280d8d8f9255c7c148957be. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM81765371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e90f3480285cdbfe4858d6d6333dd939b8752500d9aa15fb06dcb6ceebc3e. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/USHM81765372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20e0378b7e868fa4e9a7bb3b7346fe67a34828b7715ba088dc2549cd529970. 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/USHM81765373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520b661af26b8cf76a999ac2fa93e409ce6abb70cfb7d7bbec743cc1ec481ebb. 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/USHM81765375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63a8da89fe0309f7549ad549045423a431e6fb89063322758cbd59d3a84a492. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USHM81765376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35f7a7229a641fc91040a3dd5ed7e738f254cd25caf21030dd10fe1e5bb53eb. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USHM81765377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da38b5aee60c45e3d3ee1969df69581595829dc54ed87f97079780bc07691c0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM81765381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4afa5095c8b9c595d907729ba58bf34457c378b1a0594885ca3f10d8af30320. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USHM81765382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49fc705d3ac2f9c19d852ec738aa8c482ff8ba5319a2517ec75013b0f309fe1. 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/USHM81869613.
E Mare Libertas (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)