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 0x18012b91c32ace0d93b583c8bf9263299e864a311958506f709771edcecf30d4. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14d6a4b8-d8ad-410b-b14e-0ede3a9cbd85.json and https://artists.proofprofile.net/proofs/artist/14d6a4b8-d8ad-410b-b14e-0ede3a9cbd85.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 0x019133f07df7ef98675ba237f5c6e94df2ca5b60648d7f2583d0f9b0cce9585d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAJB2469018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc30a624cab6df178ad7598e9f5bd76a8cd0547e2dfc704f5a4e5cc47c622a6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:09Z), 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/TCAJB2469043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc82bb7398eaf6d84ffb56a0cd6ac02f8f320ba142b35c7451cfbb285ff0ae3. 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/TCAJB2469095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0688aafb912dd48b7bd0823c526cf0c8f72e9f73b6819c51d9cf9f4ad5d2840f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAJB2469115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd251cbf3e970ea2618ba8838161c6e335e477dd5d2976d61ca95a0c9054af50e. 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/TCAJB2469135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d5833bc86263902980136151912a868cc3938a39025585e912cd61d969b068. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJB2469163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bf2927b9dc8f2102d024d2610c446489050756caa4ab1c70fd38eac9696818. 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/TCAJB2469220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c032b7b443810d8c346d0f395ac6886b2791504b561bff20e747fa64a9d7d. 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/TCAJB2469240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171fffa787cb6999c4c3daeff52c90d6b7caa6c6f0669cb0a20f1c8e286d75d5. 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/TCAJB2469254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d819dd297578a374c8cc1997e40264f5a3ac79f97d8434855dbb6f03eec5dce. 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/TCAJB2469267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d39419a25902281bb76bfd7e6052f25c53ba83422b440624ccbbd7bbc2a3b1. 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/TCAJB2469281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9ad83c3246d4aa0191d95b706b026b9efce492e52b49f9759453093efd9f7b. 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/TCAJB2469288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f4c6f1182f988ce4bc4abcd9d9c59591dd657ced0efef09acab9e0b7dec368. 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/TCAJB2469296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1623e877c53d9ba59af40985bfef3deb711c50777812183752bf3373c6ed945b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJE2517803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b4ee00029f203ac466b18a69d426e5941e4b845bab84cb779b9e219f087f4a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAJG2522121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe907a41f8acbea29815c4faf31ef690de32f0421f7d3ba3d9d96e5d127856408. 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/TCAJM2538083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204660b65663513895d4d47380a54b8f73d8c582f39160c391bf35ab06115698. 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/TCAJL2592263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d3b6dda27c83325bb8348517fe6744a0fcd03b62ddd815b99408151bcbf48. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAJO2519973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eabd9ef1db4f1f683c33bee14b9dbc4a83531deac97afdf3c184b7730256d9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:47Z), 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/TCAJN2598169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddece0c6bb12a0a1107a5bf09b963cb88088ac9aadb535e83999ee9b6318a29a. 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/TCAJO2594192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0678c5107c6bf498213ea8fa385f86e060c8ba2f6f3ca044a42b8a5157f6b60. 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/TCAJS2531303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b605b4788c018974313d0eb2411849b35a03c9c9af781dfefccf4f33025f694. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCAJU2553516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccdf92f1a0813244110315f64b16c5f1a89cb5b2178755fa0c9ebef23cf0b8c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJW2592168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d622435393ec92881bc26be8584a564493e825593be1dca816c03f342c0de21. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT65W2524542.