CB and variants may refer to: Places CB postcode area, British post code for eastern England served by the Cambridge postal sorting office Cambodia (LOC MARC code, obsolete FIPS Pub 10-4 country co
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 0x344d2afd04aac6e526e4d6c147680b2bba19a0774a4641225434fc3ed7057d04. 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/FR59R1832078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fea867e4e8607b5db7f23da430b25505b16120e255b12111760a209d199748f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UKM4U1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e9fe42f65cdea85fca529b78746c09301310f57d360f37f94d160e8fa5e10. 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/UKLZ61800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1bbafc70d001a705c2292ea0834c49606ff7a128afb65602cd5852698e0c5e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRX201845346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e66139160308bacd2792d6bec1abde1c039abcd94d7e9c97b57690ae10e900b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/UKAV81800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2b6aae49cf339b43c62b20d2f6efabb99005f2c435dd3f047f6bc39d11e5f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FRX201845348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f9a12223a5721ef488920233206d97db9c6ee95149315ebca1aabd99428df7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRX201845350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167779668dc9ac7716b18741edac98e2265e39ed6f38d480ce95bcc3f1a4275. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRX201845353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc487c02c46d00d62d47a45737bf07f2ed865cf01affbc402116634fd674c17c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR59R2016793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8744da808f1a427f6cd5c3c6d8085aabdced305a7795ed9c1ba1e5de46ab0d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR59R2016794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f7c81abd743eb717562a98bfe72124c635b5e6bdb210351ea12c3fd638e2b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR59R2016795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5765d9f44146e6e3b95cab4eed516deb8f32ebaaa7b7cca05a03bbb6702aafb7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR59R2016796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7d009d8e110510f4c139a90f8781b6d86b4c9fe3168cacf0dc62730820e2e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR59R2016798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fbf3ba32f60b29a4b13eaa735953b9b40ed4a589ee4ca1f7dcea93dc38eab7. 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/FR59R2016799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae910aabfdf5fbaba1710cd29cebb2bbe923edfd1c28b8702350e0dfe300798. 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/FR59R2016800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c9b53a375cf35e136ce88f85a09fa1dd375e13fdd263c91c62c162a490485. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFZ42142706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a1c5773c4bbdeb9910a98e2db893b16c46c5368657f4d1de3127cce357802. 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/FR59R1837162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e06a1df61fbdcacffaf432e786366f9a9104ff5ca1fe3236b331e445657f499. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAFB72100006.