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 0x2174c754a72e91ddb4ca0f7a8e8948e04d0ee2666a1cc7592c2ea1a0a80eb520. 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/741d5ed0-cda1-4e90-b09a-3ae0134cb97a.json and https://artists.proofprofile.net/proofs/artist/741d5ed0-cda1-4e90-b09a-3ae0134cb97a.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 0x99f3d211557c8b2f1b867401e986827ff6f476dae0ecdb702769a5edb226eb61. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLFP1524100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61e7f7b51df175e94188898df93f6ac4869f2b358655aaad8fe5432a3cca81f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLFP1524101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ed1e65d9ca4989b117db1953082f610646fa93f72a7a34d35af8560629551. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBLFP1524102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71c908724a6cee68ef8012d7099c1ef6bc9129870a8ce6aadfec73e0c780ca6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLFP1524103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd40172c98e93b0162e43e5bd8c7cf7ceade097261d527909617204d9b6746b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBLFP1524105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc50b23bef6297d63abbcd70b5e0e108f899ce803f0ea0c33d1fc6c1c395a76. 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/GBLFP1524106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fbf31c88889c8e02a157d572b605ef9ba64415cbe7d911f394c74f35d05c90. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBLFP1524107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c463dc419244efe9834ffc434496ec4817566938c6a2f0f8905bed6df890e2c. 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/USCGH1854040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8f95ea4a1775b7834ae9ea4efcfc4e3d61c1575c07d3c03d57a266f2982db9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:00Z), 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/USCGH1854041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4281729aecf7f484b2b12e66670aaa795652eef1c0a03fac87ab92ef9d78a5. 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/USCGH1854042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b269349ac90dccedb9dfff861415d517f613011817d8a6926a9c1c200a323bb. 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/USCGH1854044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80fa8df8f1a3586cd46d83e353679090d48f1c126903d98b9cf1c24c4311dcd. 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/USCGH1854046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1e43dc6db7f39609c223258dd6551a3c58c2297849ca01d448245a0844f56. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:53Z), 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/USCGH1854053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1c8facdf369e8b56a3e18dbd7f05a3da740f6a18d140c0423a8a281c6bb3aa. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH1854061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ff084ffbb72e4c8ede61ca671e56705ec013c97528ce7997c92a52abab10b. 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/USCGH1854062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583bbbd8b00cfaa23bf3499ff3b49e00c6e10522c6072a242fb2fcd96ddaebb9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USCGH1854066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546b34ec011cc66c9e538572d1b8384faec91cc0ae12ca4d5a03b5b894d7c5e1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH1854068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2106d765fdd3bf2609fbddcbb77867752858fecfbbd7696ecd4f54fb88044c. 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/USCGH1854077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432bd6734ff1580220983357633b11682189df6b67f17584c74e9c4a70c1c07. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH1857694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25796807dcb93fef7e80f4404a69b92c831fa7b08333c7450120fc119df2bf8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:38Z), 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/USCGH1857695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffe5e85b7aeb4a4f79e2a136d2457b5aff0eeb3ed2ce1cb2fc826d0413b3e22. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1857699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ca25beb7177b1ee24c653308a39dcc20c44bc8ddc88bd24d0618ffceb3c28. 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/USCGH1857700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd584937caeab1c0c673e56e73285277dae25cbf0d2659d260b4d569f20c5b328. 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/USCGH1857706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6fe1a2a54a167d57ca7655f49ccad28d8b39cfc323b73e02586a5735e1028e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USCGJ1819470.
9 Variations on Quant'e Piu Bello, WoO 69, I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db6fe2db58da6ee5af46985c436d013cf0df8383e3cdb25b2a73b62a443d80. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:40:23Z), 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/USCGJ1819479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c2728f150027b06a46fc6a2b47f0196fd6f8425961dd81144f1e0721bb2b23. 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/USCGJ1819480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd524249d46c00fcef1aa06a6233e747ceee76306cc4527015e8686710c9b0ab8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:42Z), 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/USHM81805459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285354e1644d810c82f3f8f0b34c74fd71ad5d36d86c316b03d9de34ca7007a3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USHM81805460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40801905b83f64b1357a85d05f997c9abb28893e9c9fb35f4485d5ba17bd5a67. 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/USHM81805465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ac5ab74b60e726668faba9860732a16ba3ed380eab641fcd42f1afa27c5347. 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/USL4Q1950166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe467632ad15c2b6fd780e158124a3c1c7bc18f5f26973693a03ad0b90d019efc. 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/USL4Q1950168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1646dcd8ca7812c6b0ef4cad295dd80a9d3ebf67231aa32208d2c44b2455de75. 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/USL4Q1950169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57200836ecff0bdee8dc84061c3f8ab943f6fcb5ad20995c0c1ed72e668c508. 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/USL4Q1950174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e318996750f0b499d2096cbbd83856662c92c9101fb756119c42a2a49e902. 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/USL4Q1950175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f71f1cc0441a358a69d9f954eac4c7bc482cd7e743422d6e35fa10f893848bf. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:50:44Z), 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/USL4Q1950180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d482a54f53ddaec3ce452f3ec0c31b7cdcf8fb312b4139835e2b17ad4a13682. 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/USL4Q1950183.