GB, or Gb may refer to: Places United Kingdom (ISO 3166-1 code), a sovereign country situated off the north-western coast of continental Europe Great Britain, an island situated off the north-west
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 0x9c05114d41349ae929c679d592e5d11954957ff1439db48dd049e42c319b089f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e705394b-67ee-43d2-93f9-d270f6680e34.json and https://artists.proofprofile.net/proofs/artist/e705394b-67ee-43d2-93f9-d270f6680e34.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 0xbca75209ac99d66141ee164c050abe75cb0abdb0e1d7f24b9fd903f2e71b840a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:07:02Z), 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/GBHLW2400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1f33afb49b714698b5bd2ceca76f6c70c4825e6b33ee6cb23c18c909b33350. 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/GBHLW2400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42196544114d4992a0dbd4903d61f884b685f9648ecc680ebd9add54dc12d076. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBHLW2400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6686116b9c8823879f52e17485ffe9df9f643c18fef3ed4f9b7a2fb15236b509. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:58:09Z), 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/GBHLW2400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3374ddb03e75b570f13280c531aee0d7768cb818a30265dce035dba089b7aa. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GBHLW2400825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae11832f0fe12be28100bfcea59a85504321d1ef848db162b254f416bd5e77. 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/GBHLW2400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e9f7e227623e92afd632f83a0ba63f59203ebc7a0c6cb1f07aabe9999497c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBHLW2400832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac48a3240a803584aa9e4531184f84454c98c77156fd760acba51273f083210. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:19Z), 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/UKQC92590005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37dd84e7c197fb9fcff9c86cea8bad9101ccdb6092bfc3a37d3f5a72eded523. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKQC92590006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940111aa43327616e882c6d5279acb9d4a6139289f10b474b7521c653b2c44d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKQC92590007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6605d37e1fef9daeb65f22f94a9a5ecc0a4d91bb69642d8b5966b2aa57e3b0f1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKQC92590008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99439956262136ff2bd26f3af0b6cead288e4d64cf8644ad8b6c3237fd765930. 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/UKQC92590009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa628a6762cd1a43b80e421b7caf67d244341393f86a4854d3611f6e99873256a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKQC92590010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482a1b040260007d868978c890d6e9b75fe36ebb2351ed153b77badb9bc0faa9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UKQC92590011.