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 0x77a3b1fd428b3dc821d3176cc13ba47ec7e7e68751729c5c7925fdd5d1c99c1a. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75c9f0a3-8a21-4d49-86fc-38791f0d38d2.json and https://artists.proofprofile.net/proofs/artist/75c9f0a3-8a21-4d49-86fc-38791f0d38d2.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 0xbd06bba9f8ff5d4a41d8263dc8a4ac477186f80054896be85676456f0b47db9c. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QZNWW2457485.
JUSTE UN ÉTÉ ENSEMBLE (VERSION COMPLÈTE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd06bba9f8ff5d4a41d8263dc8a4ac477186f80054896be85676456f0b47db9c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZNWW2457485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af192aedfc4e638822b71d6a52f6d46757c078f2439bd54c4898e35cfea3070. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:00:42Z), 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/QZNWW2457487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b7b1c9cddab480150b3c1c4a20b54d284a9fca59267cbc6ff45d1faf550272. 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/QZNWW2458105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27512bc2755f087aba051425a65cfb0967a374fd2bedc4039b5a19ee5b49244d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:17Z), 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/QZWFS2426781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f399c87d6706aefd8e74ff78fd6b922357f46d2a98efbb8a9ce470dbb41a0b. 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/QZZ7X2464882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00095945d9294aacdf9077708fd9e1465114969d11f97ca485c2a6eb0e5f4df0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QT3F32439172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ace2da5faa85d9e4d60fa65cda923be8a87f8e84783a536a75a950992ac60. 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/QZES82595281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e1fd3585aa2bd5a65564c28ac7bc21195fdd80077b2356ff66f6f7816b0a7c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:57Z), 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/QZES82595282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5770000a17ce5ae60ec669584a3ef90c0c0ceff3e7d1a5f54e4c42bc28c342ad. 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/QZTBE2586305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa645bb98f5206d4193787b7419d13417b1769cc9f44fd43468d201074f06d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:25Z), 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/QZTBE2586307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487921603f9ae9279aaf66f83c1b8c90a26d87cdb0005522a121395fdbb4732a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTBE2586308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1cbdb5787458eaafddf1ce520c61fe490fab88d30529dd0d92c63f017b99f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTBE2586309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e28a3d6f668543459f6342676fc4d98b23056a4097a4878994a925ea5db2a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTBE2586310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b8cbaa60d90e644908eed9a56c4378be074733bd6ca35f0a2426543d640ca9. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:29Z), 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/QZTBE2586311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f4b3327708a1d753fcda33955fee7cec4979ea43959dfa3bfd74a83d61c60d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:15Z), 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/QZTBE2586312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6817fc4a56f69f57d3ccce05983ade081201aed612e6334b3cc96eecd3863ae2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:56:47Z), 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/QZTBE2586313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae08b43d65212a1a60ca7665727fb0c28f01600c1896ba0b1a30896d8d12dfbd. 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/QZTBE2586314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915d94d9af499387047ff53599a68a57180a6d53b0f33efbdb2875d701bae5a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:00Z), 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/QZTBE2586315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b9910813304480fe49e5d44ef608a441d035674bce92c59bafbc1cdd167b7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTBE2586317.