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 0x1df6fbcef0e63750c95ce14551c624c97e700996ed756e0d9f93817b78558871. 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/1d310557-f6f6-4c2d-ac2d-4e4954696775.json and https://artists.proofprofile.net/proofs/artist/1d310557-f6f6-4c2d-ac2d-4e4954696775.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 0x9bc2986127c31f358f12e1becec53ffec60ab110d6cf3aec0b0fa7e056bc0b52. 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/QZK6H2313243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00292b50eb6ea4050f35c8d05a541033e5727c88649c5a3b07b5d08ed9c9418f. 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/QZK6L2366780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea489f70726f82f3ce3523e10be6f10fdf8b24e0460ffb159933f97fbc44eb8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6F2396358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a9316580cbf1aa8823dbb491258911cd7c4491651d5261ede755e4c940826. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:24Z), 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/QZMEN2369010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7121122a7c1da8d104ab6bc567281f83dd098544cca392068455b6d5c26407. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWQ2361204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f27eb73d9b756002eab28e566c2713ec52cb1e59ee69d4411ff3b87a90caa9. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZTAS2332681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71df66d3a0d12fab2027d921e0b288a15e466b61776cd81e77debccb01633ac. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTB42381520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbd329b4e9d863aa78a4d1b0b6595c06efa17fac65027938003e7bd117c2b2b. 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/QZTB42381521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5322487d8d7d36b609d226f5a3b695865de0ea7bebd2a6daf9d93df8c71226. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:32:19Z), 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/QZTB42381524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f73725b936e1996442ad8a5ddd62e9970a189c58d306d2244e58d241c6aa16. 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/QZTB42381525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3006e14568e84e638bf38f4f51c5b0df8739975197e46ffd69b9b91765d33a3c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTAS2332683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c4f7faf0901fc0113757d686129ee5fd81c937d05e3edf6f75ce6a89d2958. 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/QZWFF2336778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dece30ab528af5b8d59a9b7457e0b17c0c84c6e974a59a9e3a40dfaa7f787f2. 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/QZWFF2336779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c09d2ed10e2cf77663dea0108ca0296d6a54a883c82e5d2f7666e6c0ce2268. 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/QZK6H2463871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f8781e4c3480185536350ec68dbf4a29c93b15f542e107f09932872a69f2dd. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZK6H2463874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b44e5137a7c65128f820edeac2987488e109a74f7efe4cf2637da48489b30. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6H2463876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07756ee67ff077ee4dfdf8cbb777d52ffe74ac0c3d4f1bb942b25ff79931df17. 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/QZK6H2463877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e71f9a54b774a7abe0834ab384d94837caa1b080d8aa054e7ed421b5dbce8e5. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:53:10Z), 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/QZNWV2460495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9e52e52794a272ae820fd198cc644895172b463bb6e0b4ad1bce82e4bb3406. 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/QZNWV2460496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d9a8b34e2774ba1b46c8b21b04eed40ee77c839a0d2a99e17240df64afc8f4. 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/QZNWV2460497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b19a3a645b41b894daaf6a6b65f9c9b55afcbccba952ea455143706d5cd6de. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNWV2460499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c540aa50ca9192ae9193f9b36bde81be3fa56ce1c8d560eddea707a32b8ff8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWV2460500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a54b5296292c6809a05794366036f4c5ca83ca7c838e533cccdb3b335f5e5e9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:19:32Z), 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/QZNWV2460501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75da7ff14b6a343a512bf997aa93ba90c396cc9c59696cd0a21e4c922c2d4816. 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/QZTAX2482819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9fabc22daa600867721f378ebcd7fad95a1f4bfab6efb73d4586ead878d81. 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/QZTAX2482820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568817740aaab37d28137754905c4b6010c296279b6a2c729f5112bbd081237. 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/QZTAX2482821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a2e34211428629959c12bd727351200efe2c93442b5adf604a933ce26d0be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAX2482822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1807a36bc5179304678c3fbe54c437116ca15850d768047f7bd86b63abc69b1d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTAX2482823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4f38e7e7c64fb18bf3602fec83e4ffa7e4e69f2dd2672ddb9f51f99be52d6. 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/QZTAX2482825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3dde2d0b6d5bade53d35f40e9e466c1614e4561812e0874fe7a0eaef9eeb17. 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/QZTB82459171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baece55e468b858994582e5087ace919e8ddf400883a95afc218c4a8b11cbf3. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:20Z), 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/QZTB82459176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f681f4a73f2406f2ff3724edcae1f2b4f2ee13b2d90d564e3a35091949819. 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/QZZ7R2418101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a39c31cc492f0fbdb3495e06d3017e69cc6ae594f097bf4d2fa2099bfec285. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:19Z), 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/QZZ7T2406223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2390215368a28a9bea1233369018e273d78fd845cb7f3f233d9f01b670640e49. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZZ7R2418103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99862abfd25600db0f3653e46cfbd496089b8f60239ea43cf6a1baa9501c42. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:26:00Z), 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/QZZ7R2418104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3ca70bf83267020bd17fc7061e9bb2ed53f6b52a782958d5d7ffe6c503d826. 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/QZWFM2467317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d0ed438f7f287e5f7cbd80e92f2522c05fb687dad32846f26d1fb73955ee77. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:34Z), 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/QZWFM2467316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa256e8a0069022b4f5ecb5644b63443b9b6c489b6e2eb8aebe5343027ea39bca. 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/QZWFM2467315.