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 0x14cb872da5a78ea27dfef82f0d7e93bb2f2188ad857bf6e104c50c35acbf5026. 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/9590076b-427a-46aa-b9eb-8ff5dcc8b9cc.json and https://artists.proofprofile.net/proofs/artist/9590076b-427a-46aa-b9eb-8ff5dcc8b9cc.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 0x3492ef23b9e028ae41542e69bf7c4d2fb7486b2b49630e93e9c50fd1eb9ca8c4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKEX32139751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c513de0fefcf014639c2e23fc57cbbdf1152d3680852095583915e34c266bd. 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/RUA1D2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2965fdc65f0abf132c5078ab800f1785caee2a67e819fcb86d78295de4717f4d. 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/RUA1D2368416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9911e834164f4bfd1b349683b2f7bc5495746faad1242c5e2099fe85f2d98463. 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/RUA1D2378939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b08f03c706473217b443a0a1f7e9056051cf81f6e82ffd213ca5e7d3c614c25. 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/RUA1D2397655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ffe4e6d088d751bf010f6aea9dcc6abba3ba6a07b5e013c15587ca8dbbc201. 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/RUAGT2302257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168a9fbd1055f401b7d04653f52fc41762169f6476239303c3b39c7d08fcab1. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:35:42Z), 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/RUAGT2324862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1bf3373297a0ff34e53e5d4c41643c7941eb6cb136eddde799badb9d7535a0. 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/RUAGV2501443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b194ca80a544f32679eb46113294b3d5f5d05541627f131b012a1f1e59e5a8. 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/RUA1D2539463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb122037d535c2db05c206f6e4d860a1c4f5c20b46cb254029a6c386a90519ba4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2537217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cffcd573a48f2757a719bb5aa8316d8099f4afbec00e86b01c56d6a2c3998a0. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/RUA1D2575227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac88e1c2195a669f6eb1c5b984d11a60075f7f77c7c84081b9db795f3a4cdc. 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/RUAGT2501983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd841f46e172f0d0428eb851eafd4a4ead7c6d2090822b663aa22b5f028d1e253. 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/RUA1D2589372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012aadb0dbacc9b2c2e39cfc6038c509d4a46db360d5243672c91daee415046. 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/RUAGT2516602.