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. 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 0x66b6d635bd68c17b9e6d39a21375eb175e22e419c10833fbd520ced1704638b6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/984d29de-0b0e-4525-8f56-1e8e5fb608b5.json and https://artists.proofprofile.net/proofs/artist/984d29de-0b0e-4525-8f56-1e8e5fb608b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CB x Fumez The Engineer - Plugged In (Part 2.2)
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 0x88f0b4d16a6388a2d2b9220d97af60b0329b4944a01639bea73668601e135ab5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE66N2349413.
CB x Fumez The Engineer - Plugged In (Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c6c466e992a8c7c43c678265bbb8004c43effb9bb3550377142ba7aa9d6896. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE62M2374952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2788f357aeee5eb586ef8fb211cb319f805efdb6aa6ea0c278ef6e4346a3cdef. 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/UKTF23000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfee36cd4f52f8affe036249e2c5dfb9da97c2463f33eb113c92c5ed9682e547. 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/SE6SA2271014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa7919bdbf5e96b5fd1b34e31bbb824412bd9932e0460e71ceeef16ea092122. 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/TCAEO1954635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa626d597294928c89b69b8044b70f1f7040c75f5f1a2c3374e79b846bb27c4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEO1954873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1afc04085ca747a03f8e0a4d7b2d95fbb10190d16180503b6e2785d9de8b5be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEO1954930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c4b3b71d34c19b8bd7c1f47710ea3a4721252fd49e16d83ceeab420923532. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEO1954642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3354cb10dbdd973ee02abdce32ffea7bb3401cd7396b9b52692379e79fdefc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEO1954843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb98f0de246a9a9878bf06d1d51a1f8050f8b20bcc865858a89980502784f57. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEO1954871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddb99ba26537867c913f8f9fb4869ee493cc66cf2e4bf3ed6c09ed287d89c04. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1851350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6baf5c466618e4d90969ecd58ab6b554f1a8baaa4a2b37db80d673e9eaa4002. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEO1954917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbe60ac7c6b051f058b2fade1cd93a2ccc2b08a0c035c04997369a70ccb0bf2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEO1954974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1caadc7989c078926e579e9be5f0249637a10f8bd771360b7fed29e3ac23fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADZ1862219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed6e1de7888317884dd6d3d5edfd39f47b185ae809e0de60d86f8bba208703f. 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/TCAEO1954989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab198c13eb5294d0f4244819490491bece605886399e99612f2434f9d9c15acb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADZ1862146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef3affc835857d31e4f065c6fbee0acc51bebcb1b74786a9e8b3dee3a83dee5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH1810871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4d56175b1e7088c736000f558a9680c4c6d932e5d7d5bfe9f92baa8ab4351. 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/GBARL2300786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78c2f0d69bc18a5203e3193c0ba57816714b0c5f052a0f4432517a6605989ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6HN2240161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b770f306981dfe2cfa413dd3ccb73784288eb945dca05420e5b462c80c08996. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5BU2211112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a9e7a7764c8128a6a7dde71fbb98dd4a336632605ee37e41087582c1fd00e5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFI2180434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc272244505cbcf467fcc1d5b423a80ba8ba334f52f1e5d875de17e6e95a8cb8a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6I32064572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1caadc7989c078926e579e9be5f0249637a10f8bd771360b7fed29e3ac23fc. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/TCADZ1862219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c72c6fd2711711ffd6b62118173ec4ac1aad1b309a99c12fae8f60aa434e993. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLFP1883756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e80c3476feb7e2a5c89393ef420b78049dfa0b4f2298353b1d205cc53e3c7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1883757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddb99ba26537867c913f8f9fb4869ee493cc66cf2e4bf3ed6c09ed287d89c04. 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/GBLFP1851350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab198c13eb5294d0f4244819490491bece605886399e99612f2434f9d9c15acb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADZ1862146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef3affc835857d31e4f065c6fbee0acc51bebcb1b74786a9e8b3dee3a83dee5. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USCGH1810871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddaae911faeede1a71a3dbe2d5a293fd72acb4f22db7fec2eaf5224aa1be0dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1425932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d8c762ceb44d160795cde6cc95a1aba715c8ed684a4e629e2ebd60477fd14. 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/GBMA21853621.