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 0x4696df96cb7a0d608cc5bc205bd67274c673ee898bfd332e726b10fdd8211f59. 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/b45445cf-8c94-418d-bdcd-801feb893558.json and https://artists.proofprofile.net/proofs/artist/b45445cf-8c94-418d-bdcd-801feb893558.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 0x467449da097962ffcfe9ea79e0c430037f350e8e2cb173d2dd763d4e76fdf1c4. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:33Z), 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/GX3HH2139263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da933e4dc91bca5e44633999f6fac96d4433c40dbed9d4a4938a04c468b6bd5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:08Z), 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/GX5MY2140224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef2e09efcf5eea63ae7123288202274056dfdeb05c60b1d7b6882d0d0fa042. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:34:55Z), 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/GX38U2289745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6268e2d0e53aae3b8720afd5bfa6ee3d58bb92cb7e1b8e100e1637578d4c00. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:50:01Z), 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/GX38U2289753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dab83046c499f71798a1df712dbe532b4299285eb6ee70bf18d3b32f924db2. 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/GX38U2289756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c0d4a95e2daf44188bcfcc9b33f7370c238c76a8c6f8e1bb67966a764cee0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX38U2289765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c113c1ad29fca5c9ee15cbb550f6d6a2ed013538b317adfe756744f96f1d90. 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/GX38U2289775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a399b92b97f2b353a1efe59c1bf98ee548fd4fbe0e37afb3daf5cd9978c8390. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX38U2289755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6931c893097b63a91f9a921f31dc94165578bc336e919cef7a507670736b7c. 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/QZHN82288235.
we can't be friends (wait for your love)
The Tortured Poets Department (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f9a748a9c079d715cece4a1e7ce6c2055385f5138e00acbe09b07955deae1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBPS85496168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a8a7bba97b165ccdaa279f146f4ed97452dfb61bc1b8a47e75217cb49629e7. 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/GBPS85496143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6eb356dc51a99d8a42f8081fe02a26c94d22ab4e67087186950102d8fa6d7c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:55:25Z), 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/GBPS85496031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128e0d032be9de805ff3faaa7b98c092a7777f00535555eb9d908dc262c8ec50. 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/GBPS85496010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62bc4079729fabebb88d1e49ceabd74546f4dd6fc3b17a0d68a70a35bb36bd8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBPS85496013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005a5bfc228746b0ccd1d7cb47a3442e0d4732afa0e390db80d9f078fc27bb4. 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/GBPS85496034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d605b1fd1da44bd859b6d044dd47ba66056a3ed80afced0d93fa9086aa94ffa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:49Z), 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/GBPS85496084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3b5e560efd81bd2569214af3aa93db367b87e55a098dda7ab261f5e9d6ba4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBPS85496109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b294a1dcca523e013056e4e53daf06922958bfb5c3d64ea1c6c34e4bcabc28. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBPS85496100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc3c8da1020928b07d669741985a7596dd417d0729d9978b1c998589e6c97d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:26:51Z), 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/GBPS85496045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c1d8f31de00766c248dc2936e1f625aebf1f5a964f54dbba467134dec503b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:00:11Z), 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/GBPS85496088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede3da7a3b33cef13fcb124d4887e4a86e3df158ed0ed23ae5b1697707ad0e06. 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/GBPS85496130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a7b192323ffb035e4d73cb03c989c7d32683f40a94fb64a1199950d8f7c253. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:35:14Z), 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/GBPS85496058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9822d7bd5935b70f8e3d8f4ee948c09538ad72f22e741ddc24b20adcbfa25dcc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:56:39Z), 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/GBPS85496121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30f547e9b98cf742ebb926c80117f8ea9e309310d1173517c16c3ec5085b082. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:37:03Z), 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/GBPS85496062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf583f8cc31c28a5e7d8af8bb360e436b3682839243e7b683a2c23e3fe517fad9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBPS85496146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f0757698a2923093e2f1225a6024c53b422d7f97b7ca6265b8c75d8040895f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:49:04Z), 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/GBPS85496135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f790f77aab09f18698422f81a67c6a78f2386a76a94140c138b48822d245dc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:57Z), 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/GBPS85496069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913961a2e9238847d44070888fad8411bd39b5b317ac6f2c9a36ca3bc1eeb9e0. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GBPS85496126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9c5579611d0a9a0ba6a39b20ad8dcbec223dce4029f112859014d67b400100. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBPS85496038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b294a1dcca523e013056e4e53daf06922958bfb5c3d64ea1c6c34e4bcabc28. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBPS85496100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06486da51e57c1133e81f969da32850d62ce0d25835d5dad6333cfb24888b16a. 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/GBPS85496073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f9a748a9c079d715cece4a1e7ce6c2055385f5138e00acbe09b07955deae1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:19Z), 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/GBPS85496168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc3c8da1020928b07d669741985a7596dd417d0729d9978b1c998589e6c97d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:45Z), 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/GBPS85496045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93141ce89f03bbae9d370fe23ffc3de092140543731ff2bfd225e08bdeeffc16. 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/GBPS85496019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7147f5ad310336dc5e8fed3dd3eb6f1a278cccd72b36ea2853273872d788eb. 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/GBPS85496140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf461e82e9f782f44d76982382c5832e18b871239a95d7dc07bbbb5b43de7580. 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/GBPS85496149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf583f8cc31c28a5e7d8af8bb360e436b3682839243e7b683a2c23e3fe517fad9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:45Z), 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/GBPS85496146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005a5bfc228746b0ccd1d7cb47a3442e0d4732afa0e390db80d9f078fc27bb4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBPS85496034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128e0d032be9de805ff3faaa7b98c092a7777f00535555eb9d908dc262c8ec50. 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/GBPS85496010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9822d7bd5935b70f8e3d8f4ee948c09538ad72f22e741ddc24b20adcbfa25dcc. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:39:37Z), 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/GBPS85496121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec97ad3c58f94bedf5c588fde50596fac52c03de82528d2397d3005a8010d7b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBPS85496055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2205c0237b5c6359f7a0b2cc745ffdb288e23b0d6fa57f3734e520ffa7d374ae. 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/QZES82395794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f31e5d338153b7b64825ab1ddc805e6a7bc3c0362859cb93314f4922f769cc. 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/QZES82395771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b201bd1e619370d8b3baef4f161a79aaf0aeeedd40f093d744a2a050eebece7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZES92347321.
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