Pinback is an American indie rock band from San Diego, California. The band was formed in 1998 by singers, songwriters and multi-instrumentalists Armistead Burwell Smith IV and Rob Crow, who have been
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 0x33904b378f56dc012ee7bc20df29fd7e77306f63d4ec22a46cc49e296df84dd2. 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/5cdc3ed7-daf6-489b-8f78-e4ef4a570abe.json and https://artists.proofprofile.net/proofs/artist/5cdc3ed7-daf6-489b-8f78-e4ef4a570abe.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 0xe39d752d79d6dbaa9c1d20fcf2c1a0fd69e3132534c71071c0f527e2fd658835. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USY6C1728606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284f2c0d78fb971d0ba4a744d19ba7d29ae8e0c2f7a010b05c1edb22b3ffcf4. 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/USY6C1728608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d88e1bd25ae1c9f7ca5e3fa8ae8597a03977b99eb2b97c254bd2555161d37. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USY6C1728609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e42d0354555a38657a0578a8de4db292461237cc729b09d985da7d923c886. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US2K70310222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd260aac1fc7b297fb8343f0457043b30bffe284ff35cd2f72a361c39b5068ef4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US39Z0603301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a1dee306fb669673e0906553e3b75b0712e0deacf6c422983c3b7bd25948ac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US39Z0603303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14625e22bb0c028aebaf5e822f8a11a74739217d3b3c8ae21eb409a359f80d51. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US39Z0603305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c74f7d436fbf1d9f5af4e6b3d347d4f4c1f6217ca04a52092022e8283d4724. 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/US39Z0603306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f564b4a4c4eb2909da09ceb9569202099f9f37b0a568106aff31676f19496. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US39Z0603307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16b36a7dd11790d9b5e9f35dbd1ddbe4d5b0b37f16085b43f65352a4e115b3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/US39Z0603308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec032acd1c3d73a25f1c2c04abf0d66d93e4a549c6260c8c1533241e5e435044. 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/US39Z0603309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ae9c847472fbb3fa9ce6ec16e6980cf7de43b67905842954d5df2352ffe16. 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/US39Z0603310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781bc1a1f3d4d2280006158787f34e455fa9c2cca6920b3ddaef8736c82c8ffd. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US39Z0603311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9d9d76016a1320ce262247b7acd67fdd9dedbd4b895b2aa9efd205dcc009e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USTG30732101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9a6e8812207b3911b94a1c4374a8215308cb10e8d32354bb30053de3f8394. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USTG30732103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628d0f7ea7674f3cbd60d762cd5b0cce97c38cb2734389b57ab22043b2ba346. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USTG30730011.
The Hatenaughts of Melancholy Wall - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269610131bd8dc50a1bb906638d124ef210a2db6a8bae9431a6b6b06bb1cd9a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USTG30730013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e99d6ad5b841c3c6da3a7484e51a134dec6aa4672d1c13297356db40ffada4a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USY6C1017906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d16436ff9ad69eebdf166f64b1f6e044812be6a5b6a3cc7e142044949d69799. 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/USY6C1017908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed89efd4d7650b5f95cfee03394f75fb0e596fe5fbed7d9d9a75050c679d3a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USY6C1017909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36d17b3b3d2cd8ba845a664d14c58a99b7a9061b3ea7da8fce8808c076880b. 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/USY6C1017911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae8feb5df43eff680837aac1bcc7540824f5dc92de4101bc332306393da4a6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USY6C1017912.
Clemenceau (Almost Live from Joyful Noise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a50495ee491f931c6db4119acdff81d6447cd7e524462bccf005e7de2c067. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USJZA1828901.
Summer in Abaddon (15th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01ae68945dcbe510cdc756bc7ce19090f85924ac171029f9d7ffd5e3962a57. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTG30423701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a30d8e5a863ddad12cfb99b3d0b5689776b8293c11f1195bdef156abaad280. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTG30423702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f8e08746d921b5b30462740877bfb767ee12610f756295aeda96e5b10fe53. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USTG30423703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748d6e305a17e046909b7e111e582fea32e043327e15cd248493cfb3330ec1e5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USTG30423704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3308e1dbf546e0b6ab7feba375877466009f27ad11e9e36ffcaad7a00e722a2d. 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/USTG30423705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de943f95de68e6aa826f87c45fa2333d1a685cd8f8e328bbd3efd45a5a1c4cf. 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/USTG30423706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef0efb3eafa3575c50e665c61413dd0dd8e034f8fb4f2f7bad66743ff10de0b. 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/USTG30423707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291dbf50e91b85e358f385d1783d25d1224fd73e9d2aa1436b3ce797283b4332. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USTG30423708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35117665d34909985c875ea4b211666e11765b84d071ca4e9c8844f4bd5ae247. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USTG30423709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172002d8cb6b4bf6bc9740779ca9eef1c2c559de3c13caf18eabe96190f114a2. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USTG30423710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649b9eb34eb0139f28ede539a8ca8f70f8c25dbd9be80492a1de5c195643912d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USTG30423711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4561ed9599e92fc33fbc18b6dbbb0425057e3db8bedf6d07562034e422ff22. 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/US2851610011.