Just Mustard are an Irish experimental rock band from Dundalk in County Louth, having formed in 2015. Career Their debut album, Wednesday, was released in 2018 through Pizza Pizza Records. Self-produ
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 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 0x2a0d3dbb368196a2fe6ae3695422098c79ca79e7234efb5894f5117fa72da110. 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/b549da79-e93f-43ed-ae62-a6da9ce1171b.json and https://artists.proofprofile.net/proofs/artist/b549da79-e93f-43ed-ae62-a6da9ce1171b.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 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 0x1448c22e401b719a8550a401a1dbce0f5eba71852111cbbd4af2aaffdc59afd2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA51836269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc9934d5ab7cd0f25bfc592370e65f3b68b4ce7859fe436d16af5730bba5756. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZDA51836270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2fd4f88139cb4fcde5e570090eca5bc3874eb1c49cd881305d5484c25cac64. 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/QZDA51836271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2ecc15a3c0aebbc13039aa1ad7118cb20f0c202fb1ea0c73df634436d4d723. 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/QZDA51836272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48825a947180f739cd89498f68d81b67667a8d52d4b80080b3d98c2becfc359. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA51836273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8bd203093522a0d7f648ea04a4d1cc69bc3e2c668f8ad6a519f0415f563f5d. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZDA51836274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a81638ccf639fe8e7a1872c1e5bfad313b87b93db67381ea87934bf66f1871. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZDA51836275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975bdde773de3171cfb3c1eeb861eae6f5dca49f12e9500e848d747ac288b9a1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZDA51836276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1448c22e401b719a8550a401a1dbce0f5eba71852111cbbd4af2aaffdc59afd2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA51836269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc9934d5ab7cd0f25bfc592370e65f3b68b4ce7859fe436d16af5730bba5756. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZDA51836270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2fd4f88139cb4fcde5e570090eca5bc3874eb1c49cd881305d5484c25cac64. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA51836271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975bdde773de3171cfb3c1eeb861eae6f5dca49f12e9500e848d747ac288b9a1. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZDA51836276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa144e4c16722cb093065b85142f4bd02d4fc9ee6218b6c2962882e9d2f0a4f2b. 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/QZES91994294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6449dfc4b5d54e2fa9a0bfd3ad86c31b75d2a01a514d64f77ae6bca1902267. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USBQU2100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f5f77fb84d1748d85013d7b7c0f226722f5990b8059ddf93d9167eff9f95b0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USBQU2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7954131303dfd8347c48d7905e16b7ab336132817c18b0cf03e6e25537253b2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USBQU2100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf685499f9ad2cfbcfb1bb89c283ba913c0fbe6784c84a8bf29414b89b4b4ed24. 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/USBQU2100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3147aa38cf675e354735bfc59483d7234f5d2f6c7cbc54e1dc761c73f62ff5. 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/USBQU2100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84bbf5d64eeab2eaf47bc9e8feef65ab9a2bf104a26fd7066bfc34c40aa57ac. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USBQU2100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0172fe3a22a132d5d608915d64b147e0cc1ee412a6d09c6bd003445c77899b. 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/USBQU2100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a424adf26c5929f03c96b2d75f63190cf4db0b7199ff0c0d8b4cad3b9c62d. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USBQU2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0172fe3a22a132d5d608915d64b147e0cc1ee412a6d09c6bd003445c77899b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBQU2100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a424adf26c5929f03c96b2d75f63190cf4db0b7199ff0c0d8b4cad3b9c62d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USBQU2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc8d094c91c91c67e3bc0d8e60abb4266b67d8664af0b691d294a27442a687d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USBQU2300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd40ed61c1628d128846856c887f3cac40cd769ca3f638ab4a20f8fe7a443db. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USBQU2500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f811341d6c2bf1e163131610065ae95be7e13f5b45d87539fcc861067e5dd4. 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/USBQU2500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd40ed61c1628d128846856c887f3cac40cd769ca3f638ab4a20f8fe7a443db. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USBQU2500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb51a1a6d595ae8c1afb1b47bd27128ea760a672c94a2b764797ae18abb3fc56. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USBQU2500318.