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 0x2637520247281e7370ce6a4e0eed50a99606a12e95fc9632c083e06fc015f735. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ce1590e-76dc-4772-8464-1487e570fb6e.json and https://artists.proofprofile.net/proofs/artist/9ce1590e-76dc-4772-8464-1487e570fb6e.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 0x179ad72c5e6514bb38e51fd4748176d977a95c42988ff798820f37c8880fecdb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPW462214439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f8b5124107fff45f558d7b9198211799c99d4b0cd67c30668d0a101248809f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462214441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198ceb7036efe0f3de521cc19e698e7f07ad45dd529da4c00550910bbc8037a5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:02Z), 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/JPW462214442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eac4520385df3756f4b73245a53b5fd7aa8978e6173e62beb8282c9dd288ac. 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/JPW462214443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23464e92ea9611f50df1771d5ea8cd018a33184ade586164943ab7cca875078e. 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/JPW462214444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7683db28edd951270da46620b3970c2861b84ad5d554e975494e9d1ea649bf. 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/JPW462214445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a44055bb83b8b547f47fc47a9625aed0124a4ca869b4bc13706e6d7a713b34. 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/JPW462216168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823ae9068c06873249ae581363de3a95c5e85a5f4e6ce4a773e025028198fd4f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:11Z), 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/JPW462373752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1af1a66a8c60fc16eceb7fe339b935e78668195abbe171418deb1dfb6bc76b8. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPW462373753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cc2435f51bbbbf62afd9719e059a25f6df8daaab13d20b84bf995b30e2db34. 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/JPW462373754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab4e9118f4eee989c44bf93059f9f8f75b077a1549405e56637c0a9b31a5c2a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPW462373755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e7b8e3c459b921bf752162a335dab38a5e37eaceba328dd3992a70ffa2b426. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:30:50Z), 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/JPW462373759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffbc931b6e647f4b40887bd9e9055bb6648eb645f1f1f17ac16922a38bbf41e. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:24Z), 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/JPW462373760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9852264f1fd845cca283b33dba3d5bf3e00fc318e3b234ff609062a63d3ae11. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JPW462373761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5b9f8897db3ff4194dc17468648a92895c2f32e64a89953722b8e3dac96ff5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPW462373762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b45af3ceaf22a98d166e4671fb4d13bcc90182f3eb412c3f5ee7e6d5e71d5. 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/JPW462373763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36d8b6516f6a73ab9a43be28107c8fad2c2b49cb836c7d93507cd4c5e0e288. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/JPW462373766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0220d0fa2d8fdb312efbacd855dafc46e45226ff05c2ab2acd24524f3bfe94d. 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/JPW462417996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7a21e96940144e6dfcd4473591efe8218377da609485b2218f60decf39c47. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:39Z), 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/JPW462417997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8ae3465d91798b1253e2849b62cbc602674d72f4f6e2958bc9588853b50ff. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:38:59Z), 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/JPW462440868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c1749dc74f131594e0af9b07d53acee24fbc8256c294f8a5a1b8860037b85f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPW462440871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70288f52d7799d5a9d8e517fd2e08ef6b20e208f23f3bfb985fe540d0acac7b3. 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/JPW462563545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b6bf43972e0a33ebcd2fb3023ba1c530e24268f798e659f7d2b75050b7af3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPW462563546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37690b6f37a6560c18ae258d60dd5e37d8ad0622b06a105dfe7091699648b757. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:46:35Z), 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/JPW462563547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df2405be437218e967b58ae7d9637436763eb4759901f4340c92faff3a528d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPW462563548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87010b5ef4faad2231569c10267f20e3a2d3fd62d1875ea3f4a25acb9ce3c9d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:08Z), 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/JPW462563549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24d410acd0029f6132b708d3c82d1dfbbde4a6ec133d1edcbcb3cee419192c. 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/JPW462563550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126eba8655de27a954bd105ac540f8c47353e8376281d91c84d9891f987a21a9. 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/JPW462563552.