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 0x0f1c88f4240da0daf1a9fc230c0466533bad4f13ff2b6d75f8d4d2feef68b204. 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/3fe45400-a2f3-4f87-b280-9bded61d7be7.json and https://artists.proofprofile.net/proofs/artist/3fe45400-a2f3-4f87-b280-9bded61d7be7.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 0x44f9df14dc2e6a53b7baa30694080b279e7ebd6315377b88fb44c1f07bd06fa1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBMA21873890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dd4b84ca84eddec71a11acf700d87457eef36e027a94432affb7984461d7ce. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:23Z), 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/GBMA21873889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c04c6639c2ae1b68d2ce472bac505e191ff622b44ebfa5de27f368a2f4e1df8. 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/GBMA21874029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8391a3ff4c075d285c01285feeaf40eb5284745b1e0705d89dd9cd8ce214a73d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21874927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db21e39424f57e2427471fc5e3ef9b7c8ef883bd8b424c7796b3ab9da705c33. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:30:04Z), 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/GBMA22095271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833a5ecf6dda98b5328b23687612c3f3f3afa75034f79437ce062adac9fa5f72. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBMA22097003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264a59094ba214164eb2e4910effbf31e9a0c5f35b849ecdd36b8ec97b8e2065. 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/GBMA22097741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e248deca404082a59d38975f02adf41fe1b7863524e189df8d7b5dcd413c376. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMA22098370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3e1b57edd3cd35075b4ff082558b7865936e9fd89e10c3f1a91491a03f916. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBMA22098960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3e1b57edd3cd35075b4ff082558b7865936e9fd89e10c3f1a91491a03f916. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBMA22098960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa61be1b91291ffbdc630363303c41c0f60601dd25d2216f6c867785ceb8924. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/UKXN22098013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c75e8d7237629d52d277d5ad08ad9497e7f2c59e046c9c6c508c95b6e5200e. 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/GBLFP2047242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fc63adbcaa93de34b56f793f5e771b59029ce8cba7535f973f3858b0a3f05d. 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/USANG2233172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be7e19736487924aa0ef06ab1cbad0082f0bd721f5ac3ef0832c90dbd09af25. 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/GBLFP2038876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3305483d2a34241924aa57140a33d2c001bd7a74ffb45e05774f642a923e2105. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2038875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a0dedb43ed54245706c339f656c63bad45ea1a65fa35c2b5cb25546abf4a54. 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/USWL12100669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32407cfc69128fe653703ddb49b2e03ca2d68ec6a0247c46c2c2619c01d0547. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USWL12200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51785ea0eec47a9318da239baca5e5d4c39dffe73588dc02ecb68c03267bb9bd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USWL12200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40e86bb99db906c1a2245fda87215ccf9ad71a950308a1de1f8968fcb80b1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12200754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9fbbeca3076ed31c9213d096801dff73a177ce8e0a418f046a717ea29176ee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USWL12201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce672042954cb4a68e269b824c6dd6e831ccfd173066b94c3b44c9fd4dccac. 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/USANG2233509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371484fe21efb064e1368efcdc84b9655a2325a7a37efd1cc6f1f1cbb6d4a13. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:11:12Z), 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/USANG2233515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b4f98921994435f76534935e838fad591c8a6848e1865b04e482a81ba1c500. 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/QM3DF2207635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6c2435d3b7e42132d691421ef4433482f323a57a71473bcf3a2474c295db9a. 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/QM3DF2297743.