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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa6833a6ef0636f60b115ab99ac387174696dac442fd8a037414f40ec1b8e0. 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/b6dec3a8-9867-4b89-8f44-ad3eb74282b0.json and https://artists.proofprofile.net/proofs/artist/b6dec3a8-9867-4b89-8f44-ad3eb74282b0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75b6fe79cf76bbf5e945aa177ce4c1362d2d9e1fac6499205968340c499e31. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRK6S2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a7de024654011136da00afc91e7a9eea430589fb9f7b87437354d50d66304. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRK6S2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146214688d92f7c1289b3cbe0149b1f342bb6355750a213514f7e2fe33acc731. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/BRK6S2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7664d87ebf40c08c4a33e51a8466041faae0a4030cb1b457eed40fb564bf9a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BXOKS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211b023f0ef3b0f8a874a3960608abfc3a7c39e664368ff9c0e5165bf68ff345. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXOKS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbd9fa89301e911bec4cdedccbdf9c991169dcd3b18520e4d95816529b9fe51. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXOKS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b13af7683ec17655eb2af0e8ef1906339bb6c37cac4716899dec3abe30fc7a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXOKS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f69709766b876ca9a50776ddfed0aea93a9f215aa00db228ba4f68e961a3ab. 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/BXOKS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4498f4d57e6b5c1404e1687605421f1f32f75e92c62bfeb8e41488ac03a83f8b. 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/BXOKS2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aef62bed0ecbb2dc0b815b9b128ea66d84b4eeca65cfcb0339839ca19d401c. 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/BXOKS2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da02d8a8effa174c177f8987f8a3656865e3286a92fb14db4c9f5a1a2cd245b. 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/BXOKS2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31273cdc91e15003175a8048d64462686830749f51f3f2e519af858c8d1f7744. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:20Z), 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/BXOKS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db9873adffe333522f6ca8f5c708161704d29b2894b0cd72e19051bb8e72472. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:09:35Z), 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/BXOKS1900009.