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 0x2ca1e317155c83ee5275bffebf9a0e0671f79c63be084656f4cade33e7f52be3. 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/6ed71588-a35f-4f01-a18b-55257715bd7e.json and https://artists.proofprofile.net/proofs/artist/6ed71588-a35f-4f01-a18b-55257715bd7e.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 0x6f15db3054021484805ffa8125997408e0384cbf21a6f3e20b98a746702ff69e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZNWX2144408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21bf2c5f3dcb61a958133ff1e0b59775b948baedbbf47c44761c1b479a2fd89. 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/QZPLR2147340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0c1d95e8a339a94200cac919897b5181c8e8db96c38e344ffcee99f7ef5d14. 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/QZFZ32228679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9ea4abbae8c6c197965f001fb88dae9ae3c24e66d2fd4175ea7224261592a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZMEN2294268.
Ha mathuthu banga (Fortunator & Rude kid venda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5556c012f4c57a8d7b3881bd61568fe0a7c57311e49c7191c5cef8e76f6c618. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZK6L2366365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cb0f6d9c837ccbbc1aa5317713ddc5acf48a895343f2712aca2f6c8069a7c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA56E2304142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb1c76e3e290fa9d75840fba2147aef6955bb66cc0d4bd8a66a389bea679f4e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZA56E2304143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1681991b52c6d3d9392546349ca06778869f94e16a2fec617422de204483a7de. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA56E2304144.
Avhude Remix (feat. Makhadzi, Khubvi KiD Percy, DJ Micro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ba95726bd9c5aac36f61f6634e47cb962b0e60f7c72a540cc8b85c99cc4d48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA56E2304145.
Vhasidzana (feat. Khubvi KiD Percy, ZeroOne, DJ Gun Do SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97a3078cecaa4553d01eb1d35fb3bbbd7c31bdd485597234905dedb001150c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA56E2304146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebe31ba05735738f4d8ac6eb2b08150ce86d012a8cfe7ffa667c24ebaa1fa53. 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/ZA56E2304147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2156b955d58dc4ae465972ce4de261e8a7f0ac656f1c2ad0d97dbb07a7674325. 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/ZA56E2304148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7518af6f161c75357a0a6390e39eb0ce71483bc733fa2a897e7905dde5d496. 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/ZA56E2304149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b95ce3dbe27d7e0b424f32f28a36c67898ca16edbadd492924ba828e867137. 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/ZA56E2304150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e62b09065d7a83a3776d33700183fd65b46d200f024aab7477d805c1aac688. 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/ZA56E2306397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb9904e0454a5ec80bc26e43e20d816b1d2590f8db41fcaf77a0ae56bdadd0c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZTBD2344122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f70d99225b2b92acd96e34367e922de0d33670e8237f0615b0542b33d13f3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZWFK2364689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121cb6c95c1d7699ba5848b41f4aaf2956ed4f9c45f620a4118328e3ba4d8cc6. 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/QZHN42451120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9756727ff53b0c79b1054a7f224b2b58121a9722edd9b2dc87fc3648eff6ee. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZHNA2496464.
Mina Nawe (feat. Dalom Kids & DJ Gun Do SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe400dcc452ffeeab6ca6ffe552d779ff51e81b1143625a866edcbda6201c8d25. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZTB82478065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13bcedb36f11388f1c2364eef4e41194af0ad97aa2ac74117eb0dbe019931d9. 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/QZZ7L2477316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ac58e390d4c7a2aec1c893bec6203024e63558992f84e8743f8c6e6346b671. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZES52515591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a6ded8a61b5958abab9e98bfe2495b23550e63d0d798516ca0d065c4235548. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZWFK2555057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39cf95c49bcc1ce8d070bbc6558b5b07777217f20d345f20406c2205e690e0. 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/QZWFN2577621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dbf4dc0176582376b53a6220952db6d944a4ed285952cb713986f2f2a5464a. 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/QZWFN2580944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8629ade71bdc3f7cfb2068fb6e767fd1dfa714a71020d08dcd70db0e5ac8b8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFP2573270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ba7bd8559c35d91bfda83a6dbeca9146b9636ce497603cbc2fd1b8721d9c0. 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/QZWFP2575613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cafdf002f9850ad4562853e17eaaa55e02694f116da152090953c97306ea35. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ZADOC2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac91c3c9cfcbc5e84d9d71a9fa4fc14abb2e48a32ae5f9e2a05946f5aead2b. 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/ZAC012301187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef478b8067e8f9c05b9f459f49d968807e1acb81840e29a4f1791871e469e316. 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/ZAC012301188.
Chelete Ya Mochelo (feat. Vee Mampeezy, Dr Nel, Fortunator)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ac8de1846c2cf8f8b1cf377e9dffb6fbef80e60efeb63f9e15587bc6879c4b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA82Y2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813d31ca9f1195b51775ee90b7f5df617f6196c03a868b0308bb58f44db34e99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN82066730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1057f281838cd328a538f296ce4176c84afd30f6c9123d3ee80f94be95c7c0e5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZFYX2106720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559cc7f8188779ceb6c7bc5ccb79159e41bfdc188702306c5332ccf6ea86756. 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/QZFZ62169597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a2f957c8fde6ff7e78764aeede9c17d99b5a6914be187196d2e43e85abec6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA56E2304297.
Movie (feat. Ntate Stunna, Fortunator, DJ Gun Do SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8abf61cd97aa5ff5f4227473b50e528d676e703beafef520b24d4233afb3043. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA56E2304095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77addd1cfea97b08fa8788eca9ebfda6101b1be99d2438c18ad0cf0e54fd536. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZA56E2304302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6386399a45e2b3ec74758111543dade58fa998206116b4c7c4036281b3d006. 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/ZA56E2420674.