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 0xea4e82ee49e95a75ccc7403786e60dabe529d6156cb7ca5f6e2c424990556fcf. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bc21b25-5d70-4bd6-b9b7-8567945a601b.json and https://artists.proofprofile.net/proofs/artist/8bc21b25-5d70-4bd6-b9b7-8567945a601b.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 0x9857b5c1e1f3a6fae8d826abb5eb0d64d15e57dcb0ddb6b6a7408be27597c683. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:05Z), 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/UKXN22338451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ea688173e4b1813071e205fb0aabd489f93f878a5efc68578ba9e48ad4d47. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:11:16Z), 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/UKXN22338454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606e7311ef54becdd1fc5f24f482509f947ced31bb951cf7672686f52c10db1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:30:38Z), 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/UKXN22338455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0042dda03d7cdeec7d1157c76ed011b17572c85cf003c46832c9389eb9961fc. 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/UKXN22338457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57b2dc92bc57d5fd8dad4d130a07ac9db5169b8416b1c34ca762b62a0f5c337. 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/UKXN22338459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afcb3752071040afb6e26eb79e5754fde83b2fde8397ab6ce126147acd84ec9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKXN22338460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6f9926e2878e20888faad830837ae39978f30b2cea2916303d7a1fc0055b6f. 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/UKXN22338463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf7a0c9e43e21c28e429549cbea15260b8bbd3c32054d63446dace7d1a63697. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UKXN22338464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bc3a01caebdcc3945b9fd9c391f654473d9b8f46ddd399d79a03c7c5db6fc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:00Z), 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/UKXN22338465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5041d9a4003e1441eca2749114cd91d9f603a47661cba24ae5f9f306bf3044da. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/UKXN22338466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf70f13acba313b9858446e34a46c9487ef464f697da5b1471f97d158c27175. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/UKXN22338467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66570fcb97c77bb311d228f5a40443d2a26c19eba462290366bb79028fe99d3d. 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/UKXN22338468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711422b75414e88a336790d143d78007ace8126508ea321eaa2035400d968c5f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:52Z), 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/UKXN22338469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6deefeb6a40f95c525b1d89d901e61d3db3b1427eb63d69e2b2c0a5fa4803. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/UKXN22338470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65d597720be1b33bad5d4945b6c8d0279ffac778b851ba3ba491aa040671f8a. 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/UKXN22338471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b12bcd69aae1c72a47cfb3a7f82fce4532baba361293dcbf218a12807db0b23. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/UKXN22338472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a270d05eaab8bdd63e80c1bd0a2d01a55cb06845edebb5a6965ff331a365762. 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/GXF9Q2420468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef87ae157b2df7d7393ac51d1ef56ac08497da91b48a7788693a40680b8cd86f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:14Z), 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/GXF9Q2420469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ac9bf5509a8c25feb1b7d51352a1093968aa76aed8b46d48b7586e3676be7. 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/GXF9Q2420470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866e3ae87380bc68a15f819e2da2718d77d4c127fe7d7aa4bc65ea8f8c6641c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:11Z), 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/GXF9Q2420471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d09dc73e2db714bc56e130ae964e2cc43265aaedc4f0aeb9564477f8e73f456. 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/GXF9Q2420472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f6549d4cd55cc46b00fe515537a797db0f433e64fafcc04188f6b15d52a5d2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:53Z), 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/GXF9Q2420473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22690de8d445461c72182c5fafb1791bc14e8da6d50a1fc3b95e02efd412a7c0. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:46:26Z), 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/GXF9Q2420474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081a5047013ef4be8938efc2c604c2a232cb877c7c03c2126771a868cb4e519. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:53:04Z), 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/GXF9Q2420476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eaf649053ba082119eacfb111ff66cd079f03814305da1c1615b9295f6954c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXF9Q2420477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe612d80310462d8f424803833b0e71d9c319c6253b4db0aef7f2ff026476e19. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:59:23Z), 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/GXF9Q2420549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc707f360eba568e26ebc799d1e67358c706b841818fc9491e2c2deb3106652e. 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/GXF9Q2420551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75941dee6f255fbde3740022b43d09f730df97433e5b193aa0252c4c3b2f8906. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:44Z), 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/GXF9Q2420552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bc4a3dd71b049083019717d4522105db9212853679e364f7bf6aeceef382d5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXF9Q2420553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e4653544e65b46f9d7ebf8abb2b16c3bd05949a63a5998c09a3dc1a83b21ec. 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/GXF9Q2420554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c580f9d4f0d024ce24d1fbfad88134f8524215abca43c794dea98d80df4491. 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/GXF9Q2420555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d799bb5e2b0035e48f0451100d57718ac20e4ad7c24826996396c0fe12d123. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:37Z), 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/GXF9Q2420556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4cb7b304d0845d6de1f1e38a8f986ccb52374074fd4affa8d29a546b349a56. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:37Z), 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/GXF9Q2420557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f93abfebd1a611624a6b6d38ed290202b837f72c908ccd295d11005a15b170. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GXF9Q2420558.