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 0xee59f02b454b4bd4938610c2596a2895fa3c9b912cb1bb0e83ce95b72d89273e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5039200-7793-455b-8537-01dd09bde419.json and https://artists.proofprofile.net/proofs/artist/d5039200-7793-455b-8537-01dd09bde419.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 0x8f398af78faa7e1db06104329ecca91e8d354598035708fbfbc2701cde24d4b7. 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/US7VG1951586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb718f2a67c6ae9268469079578ad4707af565a8cebbf895d6da2eb7b5d9b96. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US7VG1951591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d08ea75ec3753dd4f820fd7babd69cb181f52343c281643f06602832e39c89. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG1951592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46cc1b1fc445cfbe7fc46cd4e445e4ad0ab363388c82460ae695f597c756585. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:51:06Z), 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/US7VG1973518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf7d911f0274a2bf536a788f0a84c933240a872c9d90ac520a20382f6d2141f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:37:19Z), 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/US7VG1973519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa6e03ae7a01022c97489250a8a8dd69798ce6019c87b5cc5faf2becfba473. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:10:04Z), 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/US7VG1973520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4908d55716bc9b56adc6247c6f639960f8fc1aaa01622ce44f22d1a0e63c3ec4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:48Z), 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/US7VG1973523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f779c3c309898bb19aaad6faa9892137aea25b652ab669acf6e78aba1e3d6cc. 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/US7VG1973525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ae17e11fa2f4a70e5b24fa608cd65cd49dd472a56efbc36682627c1327269. 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/US7VG1973526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eed602a1c7067739ce8a70b3c84839f7e6c3959acfbdbf031514682498e86c. 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/US7VG1973527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6be91b86c29c3077cd668ce125971b40a98850a033b86fe66d3f0ec4eddcfb3. 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/QZ5AB2328669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9688090c1ea7f26c6349699ce421a8d28d1d71f85b08b56a12911d5fa0bfb06a. 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/US7VG2253430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf277a30bd5c62f45e5bfd51a5dade81ff04dd55d46d8b02830ffea2508991c34. 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/US7VG2253431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe21f7b53beb4e6119701e23f346587ca1624ebea4743a597298ee68c2f3c55. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/US7VG2253432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a7ec81eae649b60898500e1594da080253ecc9225f48a28bf692c21074fc3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG2253433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ee45f282a66ecc3c8e2f96a56bb7dd0f662211e6b9838f2437f04e811ec19f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:34Z), 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/US7VG2253434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe4ee07221ee510502770925fd5a3616883ed9814df8280d87234ce3b5f8b6. 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/US7VG2253438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207426718ea8c725b95619c18514a9ae5d27fd2e588f162da79377a4a02aff06. 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/QZNJV2424122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf969aaaa460167d04f6fbdaeb42bd0d65d3d51b59de132baa2fece57f4b8853a. 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/QZMZ92545740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc7f4f8ef4f8db54c1515dc060ff7c766fc17109ff7cd8f6aa944d351aff4a. 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/QZNJV2521880.