Barbel may refer to: Barbel (anatomy), a whisker-like organ near the mouth found in some fish (notably catfish, loaches and cyprinids) and turtles Barbel (fish), a common name for certain species of
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 0x2af0813e6d94131fe5b42a0f3280aa0221d789566b2221b07e60ba0100cfb6ce. 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/33bff7b2-d401-4a9e-8a7c-dba776bc37e4.json and https://artists.proofprofile.net/proofs/artist/33bff7b2-d401-4a9e-8a7c-dba776bc37e4.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 0x589667838253a7252a6cba8f578dc7daf5779159e92ae6b4ddc445dd0ccfc426. 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/TCAFZ2272814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8cac14c707dac6bc55dbb2c8601cd94b0e0d387f9707ff3b6f34b32818c4ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUM72214734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0f46be16c0c512e11f88c8069d81a7d123b33f6a4f26b50adc14ecb48e2380. 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/TCAEE1972396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6886eab6bb9159043fd99410658e2d82d2ee86682eabc16b13e07ebf003d68e7. 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/QZES72224235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352e13225dbcca19952fd060c7b90f2772db1b3669396bfc5724171b8811eca. 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/QZES72281691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745bdaa297efbe97e3bfae6b7b50f466ec93e76df2f901d6609e2ba4ec7f966c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES72224241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc2e6250d063611ee868ad19140d291ff7efd0076015c357fef9ef755f917cf. 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/MXF152300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea5205bff062bdc29962f6f1f9f408d886d5e6727af0e739e652941f65a25bf. 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/QZHZ32215714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92eb8f98097771aaf9c88a1dd86101e5d96af8206317e5b30b16c740c413651. 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/QZK6Q2429579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b016e78103d6318e08698cefe73215b4144c7e504c78c7ea029547aa81313d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWL12200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268c0b036a6a7926107f1975ee5668d3ab478c4e5d7efa13b2e68e6da2813c3b. 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/USWL12300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b016e78103d6318e08698cefe73215b4144c7e504c78c7ea029547aa81313d2. 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/USWL12200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed29ba89518c2e46bd9c0efad9e4835ada0c4d790faf095faf5f5c285056a289. 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/USWL12200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8c354e65057e8b456d5d6b5166aa715e9ec7333f629013be16428e9ab2029. 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/USHM81934293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b05acf8e1901dd09edf17345977e39b0dc6594442ebc9034cb4bc91210d5501. 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/TCADU1834569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd765fbe588c1129d63ed44d735d030bbeb0e557b4866b8b2043ce631d9c81acf. 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/QZNJX2372527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dca039bc5d5846c7a2f23cbcc868648d5052faac76970196aaee08e907f3a9a. 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/QZDA72326937.