Walter Carl Becker (February 20, 1950 – September 3, 2017) was an American musician, songwriter, and record producer. He was the co-founder, guitarist, bassist, and co-songwriter of the jazz rock band
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 0x4f9e86ab480697d6da318c93edc1ac144e4b1dc6b5354bd0cecab294138f43b7. 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/225202ad-863a-4b40-a4b3-1e7a1bc536b2.json and https://artists.proofprofile.net/proofs/artist/225202ad-863a-4b40-a4b3-1e7a1bc536b2.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 0x7eeeab21db8f7ad2cc7830f9c8b4f172d8325ebef4d09484130e2157c0adbad1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:56:59Z), 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/AUXN22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121ed668103d1ace7e9630ad6f4358d1454b440995df06b5dd57a4a5071f81f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USGI10000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ac180e358eddbbef97b06b9819237f3a792bb0fd508ddbc458e8d378fc3cf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USGI10000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb188f08704193569b34318ab0b7765104c15c28b6023b4ddbeecc5ff77a29238. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USGI10000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13715f18e787d2a180d7968e3a999190bbf1d5698b84818b92dad5b2da372ec2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USGI10000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bedf0f30fa6a58d787f252b2e2ac2ec161a586d801410e1f2f48d14836bf94a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USGI10000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d01d05bf89dd448f1ba5700e7e4098245c3a83fa52f81d7126a47f51bc9612. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USGI10000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7515eef2ac62353c9e64c87dc3b8f7905d52fd9ecb02145ed6c93ce317daa1f9. 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/USGI10000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a73a25b038a7b13497f2eca7d3716c887ea2a811eec1d78cf3a3b3ffc932a9. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USGI10000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c810eaff0091b03d05b508cbd83bfcec19d6d0c492f30a041bc5701bb5d390. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USGI10000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0368bfcebd17c32160a49c00c2e05d2f43b1244d674bff41166ec2962b182547. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:56:01Z), 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/USMB50800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2358bcefdf6701db6fdabd0501840e12a6214b65e2ac04f669aafc6d7820a482. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:59Z), 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/USMB50800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a2c2dd1cf069b44ad25682dbfb0a52de42b65a7caddc4439a4bf1702645c9. 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/QZK6M2129740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e880037c6f0816850ce70f52a3e61f50e2feccf071bc88e963f047d7c4871. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZK6M2129741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275a62949191689be13d438f20016557866b14dff1a65c231f03baabe327dff. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZK6M2129742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b0f419120aa542b3d60f6e5f21d67f9c1f48c5b80452fa1d66a96c353766a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6M2129743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa713df340876cbc5824cf7b0f3c11149a008e0a4d49613a4a9e88f4817c63ff8. 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/QZK6M2129744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91350403d2e740e13d9b22bab1eb61cc1edb1c96afc283c5e6c2ba36f50c3c7. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZK6M2129745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f00b2fe82b5187af7c7f4f848f7e53ab7112fd9b0aa42f91112822a320065c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6M2129746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b62da8bcb077bb35d519e4118f30d0037384d350908049d844acb9b5ab1016. 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/QZK6M2129749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c40f7b2933370a7b04b13364e36a808dcc37f70de9cc8d19d20c94376ce9755. 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/QM6N21902054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe444d3d23062970a6a6fce1654758c785d88b9ef1c202e5f3b5e87cf14b53b77. 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/QM6N21902056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0af82e159c35ad8f6c57ae56cb69594150a72ab24d705477930f092ba5a2152. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6N21902058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58194329e2aa42c273aa7d3c09552505ca7b768835bde706c34ba5acb9204533. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QM6N21902062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac28d72537e7313f8915639e2ee6841e3a176cb3e4466a63607819b30e9005c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM6N21902066.
Best of the Original Recordings 1968-1971
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5afa9f97ef672fbdf19f79b01bdc8799f9ab8dae8faee970a5516eddbbd84f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:55Z), 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/US6PD2004897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c641038e527ba7731b649950d9664b5779d137e3b4c4c50009d726d99feccd7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US6PD2004898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4653e0b2ba61eda05282184b1b2ea0d0f4a735886d79117ed19376892f217f0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US6PD2004899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ca5cdffcabb01323c0550fe4e393386647d9bfda9766bddcbbca37cdb9a04. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:59Z), 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/US6PD2004900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e99cdfa49503fb39b9091d6c7dd79e13047ceff97243101392936d8cb6fa358. 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/US6PD2004905.