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 0x295f2463f9b0d64602f3be9298bef5f6c48bf0a97a268a0cee5fd98384d604aa. 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/d2d42241-c405-4fde-863b-ee69db39a6e4.json and https://artists.proofprofile.net/proofs/artist/d2d42241-c405-4fde-863b-ee69db39a6e4.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 0x975c4d7c01bbd551747a949dd9de752b60915611226a65d9e5aa542d756c65cb. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TR9891500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0134336937ddaa84c62e0e03ab0d2ea770ea7f952f42cc262388bf63e39d9a12. 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/TR9891500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8fe6d5ff16a71b0aad9a440b14250d2bcda9b43d39b7f20d5d79e1b8ecf79. 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/TR9891500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ac53c1c8d10cbaff0e63394e231285ad529fc4f6c83e218c91018f9760e53. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX282573612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9573967e4f91f68f726ecf0cb4c5406544f4d2888c064635bb03a2c3e85644b9. 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/QZDA42180003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3afdc642837b666576656ddd95c6bd07feb827b6a00e02b0910729a5f8d7500. 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/QZDA42180001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f432593ecd7b448d3db4f106a4f4e44ad5d9d59d6fd07549247731a8715b06c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX202057963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc710feb9f7b980917c2134aea87ea062ca11b8b2baafa6e734d73d8502b51bc. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA52114824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a677330405a27d91cf6d66b279246d95b96dd175a4e08a55e759dd16bdab684. 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/QMBZ92032972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff6c73bfd1bc165869995179dc27c3823a13adab65c01482158c3dcfa7f440. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZDA42180007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565b03ed8b931ccb37eee6038904579f562f3d3fe1fa1ad26dddc1efdd3ac853. 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/TRCCG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c97e23d7df2c4e2ff889436475df8ef0d4bc173de6c2f22465cc465be51680. 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/QZES72222682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e03dcbd24129c7b649d0034bfead6ae79808ad66c90298cea759ff4f0954246. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZHN72231717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f10322ae1376bb087f5a06b53e21ebfcb59a109f668c7aabd1584d1b508a2b. 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/QZHN62261693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4f6cf08f30336a98e8a784b3e77aa83319171a675e20c16349e30767fc3d01. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZHN62261692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090f52720fc82cb6f4f38cd96cff96b38440cc0b5ea0f5a327effc961eee15ae. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN72233728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9742b5dde709aed5c72597cd855b1a23067eaef6893afdb608bece613b1c39. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:55Z), 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/QZHN72233729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3debba1826bb52d79465338be0233c09c86b499143c1b2340e73d59ad16542. 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/QZHN62261694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6260230ed83caf7d5cfe205eb0f79800d9e52888e589ce854b5b7d688b4779. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZHN72233727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735b06142dd586f447b439ddcd34965beed8ca85887c4ea017928faea43629b2. 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/QZMER2239784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51294e71d5e8cbd06104e2cf116f8a6e7b93057cfb62a4a4c06247698dc35a. 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/QZNWV2294198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b5a3f772068a94a29ca5b90c4875de20670ccbaf421b7c6ddc5dc61524a8ce. 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/TRCCG2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1253aa948a324478e10ba9ac3bc2ffd6a4ae40c5e04a8903ca1440914b46d0b5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:19:43Z), 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/QZES72346792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43421ece557ee9d886b535b6e2597010754116410463f8c5a3518ea81f193822. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/TRBPU2301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a965900b34d216bc5ea6c9abb93de478b20078a7dec12f53ff4547793f76a. 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/TRBPU2301713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b25e903ff9d65ff5027090e88ca7375b90017cc59596e8db9e768e210ead53. 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/QZW9L2409433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb586cbfc102a5b0f1f0bc5fcba985cfc549720f455927a61997bd8ee045f7f. 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/QZTPX2544890.