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 0x94f6cc9af3cb91a6914d1cbee651ccc19bbfaed0d90eeeaeadb64a790d064d1d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/271616c6-5a70-4717-8b22-4b79edf94bb3.json and https://artists.proofprofile.net/proofs/artist/271616c6-5a70-4717-8b22-4b79edf94bb3.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 0x2b67822e3e6920fb192fb05b3c3cf9cd37b99701568982e553491dd55fe0daf1. 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/FR9W12467493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1bc3ca98a52e3afa1027fddd5b853ba0a21d29480adecd01eb246220a1ee5. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FR9W12506867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087f762c853a370f4ce07c95ce934c91b4d53a5deb5218706a8eca62d10c3d99. 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/FR9W12507290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5197d953caefe084341d1e3ccd9fa00eb9322966943f7f82eac1ced81ac98258. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR9W12506873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f5f8d3f1ed016b5b48f3b23d256e4ce257a5d5913c7e9d61e95dcf78de22f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W12506871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c821eabd615c235fe2243205f1e34534a79a0114f66b69e5413ab3facc65e. 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/FR9W12506872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fee53fef481b29be94f473c3db21088eb85bd6403662a12aecdc56f7c109070. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR9W12506874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f081e4f666a39dff8fcbd9d3944338d8e75325bb7ac02a7ae9e431b40559217. 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/FR9W12508668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3def3a9baf9589259780625cdfd67f389f6ff082ae5761d20832a7979eb368. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:56:31Z), 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/FR9W12508669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce1a08aea1189a7514796a8015334e85043783852ff43aced4c82a88ada2038. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:54Z), 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/FR9W12508671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f7e69c6abe68a55550e1053010145b46533a81acc6594e0799c7da82432d71. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR9W12515185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39248e7d351e1e0d002daa6af185722e07fb61df6a1b08bd098cacae5d811cb5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR9W12515187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41351f2685cde6cc730b6400bedeae66169278d46c3296553e61305e51a8d63f. 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/FR9W12515189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb0f47c4a64170443c1d190cb059024d4b3b96aa38bcdaa6128163475464d6d. 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/FR9W12512139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4d56e4c90abaad39f110c9d29604bb8b247cfd1f87ce20815f51aae688dd9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR9W12512141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f7d9db1b637eab1029f90c7aa794756d0e13d17888e561cef375dc70f1c12. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR9W12523409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2337fe4bf3a444bbc410849593d490439d7d2551951a771c3b14c1c79f274c1d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR9W12523871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17167d54b8ab6d2a821a2268d1ff015cacaeb931b7422e2d772d82253bec544. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR9W12523872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7ad5a403fab706401325318e7194e175f0b2293fd4f3629ce258edb16c6726. 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/FR9W12523873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879f791bc1117a5bab2f576128178f537f627c322f566b66f8bd32376bcfe16d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR9W12523874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501c7a3aef3833580bd806c3d23dd97e1a8d23763780945d0bab716ceb23cc7b. 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/FR9W12523875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e93bf8c41a719366f8c1df53c280064ecad6487b9c755cc0f142d928678609. 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/FREZ72500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553063975d6c9c1ea8176a1faf7486b65afd18788e47407903f068ecf16b9c6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:49Z), 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/FREZ72500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e3e0f663c9ffe9bd2d00ba6f9a8f1daf08ff922cc2e97101dec82455c41995. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FREZ72500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57429b1d5b1edf21bbe076155d45a1703decc07e02f065cc5a7c1b45f49d0b6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FREZ72500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94180c0fba2af5e89e2cf632a6e3595f32e2b506948ef2f9dce822a6b20f71b. 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/FREZ72500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab80caefee03f567aabfabe72996d91cd894686c64a93888d16a94324c311e1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/FREZ72500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd188e1bd87de3c52f2b2beefe6d24a6344b3d28d9c5226bc1d26ce00a480af5b. 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/FREZ72500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bade4ccd360d57882f4e24fbb896caa36ac96a6ac670c9465a26f1a4e15574e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FREZ72500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b9c420fff8ae9724a75e512e9aee5a1619c5995bf8d9863f31dd18f05b9b0b. 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/FREZ72500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c478c602bf976c8ede4ae94b222d12286997ef4dbb2c1fcaa85a17c041fdd09. 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/FREZ72500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb28c01b85a894544fc5d39f3da8e4d2c9485c3f1973fde0e4f2e03ba2b3a685. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FREZ72500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8cf31f09d27fa7ee4bce1bc974c8bfc6316e0d7cbcc8713fe256da7024d78. 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/FREZ72500230.