Maceo Parker (; born February 14, 1943) is an American funk and soul jazz saxophonist, best known for his work with James Brown in the 1960s, Parliament-Funkadelic in the 1970s and Prince in the 2000s
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 0xff96e7a3ab4df8cd561d62b47658878ab655e59a173df9b72f03171fda273ca7. 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/1dba16b7-9129-4571-9909-8f571fd1179c.json and https://artists.proofprofile.net/proofs/artist/1dba16b7-9129-4571-9909-8f571fd1179c.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 0x2e1bc52a381cd7204ea5854548e937d7ecb4abf6b7d9642d3c0a8c92f423c617. 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/DEA420000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed96ce5672535cfe233afbd7ddc3c58c3d84280e869f5849932010bb515f8dd0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEA420000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b262cc3308b706e7580578e008955ab66e4935fb064fa6558b21c29661799. 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/DEA420000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2b144bf72d1bd3057a1bc8e3865db48e44cf657f295c9be9b068a3cea02fde. 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/DEA420000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb423aa00cb388fc80a420e976943e8ec84b9853bc836390896677c53a69e5b. 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/DEA420000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e63e8d6c4f5a071e17ce3209e9123157a27d3afd6f138e81f3dc3887b44c0b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEA420000009.
Roots Revisited (30th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab7c9c4470f4ad43c0629d5f266c766ef81e765491128286d2180ff947262f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA422000926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cef89f03e8f0bb7a3e14f7c2a5bf7066f311194f2d193bfd7b26353e32446d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:05:56Z), 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/DEA429100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b8c2e061fb5895dc2dd7ece1bd511d226ef3d475035f52229d64e1ea3dbea. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEA429100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb80548e56ea2db963a976475302b31091e9153c0c817bbe4e44da14776aa88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA429100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e400a9e54e692e66adf257b76c11c5c053f8ddda208884cec36bab0d843fa. 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/DEA429100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70503165f81f35b0c4c1b1a851fdbbe44a0ebeb79696540d9d366e9a7ac0979d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEA429100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228e3c0954851867d6cc76b9a6673a0bfeceaa3ed9725c71ff0a1107c468938e. 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/DEA429100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5063abaa23b1fc19bb772f209c6d6d3f726599d8daa5b7e64b741ed54ecaf85e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEA429100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4dd4aa90a5f483338003562c5e86b7547f45f5e228d2b3c11f202ecb99f2e0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:26Z), 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/DEA429100010.
Life on Planet Groove (Bonus Track Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc055b32b119da66fb05a4d790732c9091441f9f2dbf2e3b040e1966fae791c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:35:08Z), 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/DEA429200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff910882e889d93bcbf2ed52dd8fd2de622d3ca91132f85866978ac3b976627. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEA429200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6930c22bd38251efc089744625fb95b7a4bbf5b7d35a8b5f93f65aa495a678. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEA429200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff82556c05ba66b73842045d65bd02d3643e03a9f522267575249f77d063b585. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/DEA429200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe9d34dfc6d1a40816520ec41cbc10f9ed6dbdd67e33bf831fa1b0ad7d3ad9a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:09Z), 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/DEA429200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29d61df15d9bc3d774f43670f71d2c1be595459ed86ea76e464e838150e4200. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:21Z), 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/DEA429300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee390a6f63961639703716b0f4f887f9e2de9eeeaf5cbf565dea4544b4584568. 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/DEA429300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a3f4fce6a68807bcdeac524614ad84d43dd3aa580d197456ece7aa6922ce3b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA429300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4cd2940ea910e074f02eec5147af792e6090847c362e4dcfe582a75793ebc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEA429400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b28d417cf69169639cbe4fbb638f7bfab6dac228fba9b92bc16825bac0a5acb. 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/DEA429400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9e138d43c9b2a761f646f6f2ce27482e5c74d4ee66a580ed8369b861615d7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEA429400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3fc868a19de7fe388849654d683128fd5efc77d26fe72973346990cb02af31. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEA429400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95e34fcacc09058db9ad2f80700202724141b74652871f788255b1000df074d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USA6B9803207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d52ca54a639177c5f7022fc843af3699cefadee5016eb012be46392c509bf. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USA6B9803209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f11512dba37b5fd597c49003a54acc71d435f93f78466c090c11395f4bcc3f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USA6B9803210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d804e472b78d6c5065ef242c1de6e5f6769f46d0b2330c44b953742e029fb36. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:02Z), 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/USA6B9803211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ee7c2ff9a1245fdad773bc20b8ed8ddf99a7b34b17857dbd72424ccc3ed601. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEZ940566503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb95b77577dd56e0143f9dd5664ca38532d677ad2c944a7e78c35b6d3c386770. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:00Z), 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/USA6B0003804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa90112a9bba0c6dba1ff90ab6e905446c058c0ec831704b11769386eb9ee15. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:22:58Z), 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/USA6B0003807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1f5a67ba2dfd814768de678196a5567947b82dafde7bfab503885b8ccfc2e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA6B0306501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099427f24cf33bd78dbe4f795f8d8c680dd206dbef5760dbd09cb10e2ffa0eca. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEA310500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2035511a32073f07ab6156ef11a0072e954151c6e7eb7b5c2269252d88202e93. 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/DEF300700354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b26b77551a1f3efcb1118aa9a4685c049be41a9a1ee6e0952384014616d5e5. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEF300700367.
Roots & Grooves : Tribute to Ray Charles & Back to Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979d030fe60df95dd00a614a9bc5f520fa752ea0947b944cfc9724f84f0d48f7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DER411700247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfb41917ee0e8d84278b34ad40b165cff71299b32016fd55648135970a7fa0. 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/DER411700245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab0afc2eeed1ecce3e16ca2efbb505a7ae344a94704d9286455918819ea514. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DER411700244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aed70f205df777334e1349aa9621bd348aa283387d6ddfb7ef057ed842b579. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DER411700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2c1507cec9d86526f32242b3c5fcdda63e4f51321b761193d4495900cc38ef. 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/DER411700248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0adf534dc089306f761ad2e9a248b0fa1526296b2063f80a45c9a9de058be. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLB932001302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f550338bab1f28339ec6d7cfb78c7ad47a50d1be1c4a23b918980696bf7fe88. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLB932001304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125c5061d4fbb55312b8cf5e6cecc1110233322c48e6973eef726f2f23213f61. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLB932001306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc968b9cbd0ac2cc8925727a8c5041b5e78504c556ac55c27655e6b7446216af. 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/NLB932001307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d841a689050d84ab03aa560fbf0ccf085a4e5fc6001f65127f0b540cd61fc4. 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/NLB932001309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f72a9b2adf52ad446ed9a6749525f23f9a0034701375fdacc9301372b39f3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:00Z), 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/NLB932001310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986b0b393e257dbbdbd17899373303ba641aaed83bff56c2ebc88b15ad0f992e. 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/USRB41900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0fa9d97d30a6d55c65871771efc00ddccd63b4966cb7ff34d290215843abbc. 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/NLB931701105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0ed94cfe2e901bcad768368c06c68155a43efc6d4037cbcc8553b2dd1e1d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLB931701108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa186a8876fe441387763b8a776b56bc1ffce99d4e6d0ba3e032ef5683150d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3C40500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea9a24a1a1cecdb60b235f5a18dcb4ffbe3356b96e5e6635c441ec48b7e07e3. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JPSR09306010.
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