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 0x9a4d242f30cc38135cdac3d79b117cff573d0bb0175968d93c88db73836efd72. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60d0de4a-a755-4c41-82b0-289d58563aa9.json and https://artists.proofprofile.net/proofs/artist/60d0de4a-a755-4c41-82b0-289d58563aa9.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 0x8b8a17fc98c1993a8b91d4b48cd8fa980a02c0d5aa3d8bd2bb4f03b5f1fb0ca1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:40Z), 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/QZZEB2401286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9688da919ee12bcfc77c495486b079fbefafbdbe13425795d0f5195d2859c364. 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/QZZEB2448079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6bd0a40ae17130e966e6daf2f92305b0fdb7cfaacda8265f0128d5fd5a767c. 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/QZZ7N2565680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77013e19495548064f7f1432e249f016d350473bf8d6e420235847448c2d16e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:44:57Z), 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/QZZ7N2551542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aaaf2d18bfc814ef4a771329c0c85e4c61987fccf0becf8ba3f0a7db079f86. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBWUL2597441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410f38849875e49aeb98c89746eda32465000afd9d8300f359de3e96eb16809b. 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/QZTLA2579063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd4176b09672e633b832afbe36338b671a9edeea82a51b87ad64ccfcc95cdf7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7X2502663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc2ed298c1329ec876a4596da9b49a5ecdaac3b308671771ce861f56084acf7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:33Z), 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/QZZ7X2597528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b34455e6009e69581761cafedb3bc6a4631bfe254c23eecbea131177d930bb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT3EX2514218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f93e6d309abbdd786aed6fd9e32550ea2df66490554bcb6dd3d967bc31f33a. 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/QT3EX2522557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37c682ad2857af65072bd650d5466d40980e3f53fa608999521409ec4081195. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3EX2579685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb77fd9d4186ba7e8cc05842bd0997519efb992d4d0363c8473febe22142864. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EX2588339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3e11f83ab7bc3b8c60f187f73370c6e9c2f2f6e26c98b72644c86347d4c61. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3EX2598204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489a75fcd295bf92d7fa758ea858f57445bd485e48c286fa968d70ba583098f3. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QT3EX2585275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31920e38bafa408463132fa24becd1f8985d11bc0071c0bfa0a88094144bb76. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:28:02Z), 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/QT3EY2539556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc911c19262608e9db35ba0fc21f59ed9746079b43e24d3ae7f4ce7062e99c7. 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/QT3EY2542147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d0deeb1b3e4bf409dd31486e6c705ce74d7709ea6ef95000c050416fb6d59c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3EY2542115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9dd56a79c835dd8f6f2ee90b748bd9de4bd3cf59f3401b56bf1882bc3400e1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT3EY2542103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42232e00f733b74b52c94c1e838631668239bbe64c11f7097f6aa2ecdb94f8f5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QT3F52507877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64489f0196595f2d6cd08002169d968909be31f520c855891902006bcd62fcd6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT3F52507866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48f0534c3830be6d3a30c6fd3698a5408b41aff08feb2a2b70733d0e9c36493. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT3F52505810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4dd0c4896b0ef442099db7ce8933566d9e4193f0617c4bf2a4248a581d801f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F52505758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf44661716d94f0d8b940fc37d60847303f08dfba61d80f5e77f7bf90baa4f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT3F52506061.