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 0x6ce7cfee0cf9c329efe38d7287f88b28204f28b742f12eec1224a102cb5634b9. 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/744bd0e3-800e-48ad-9934-98fe75c16e66.json and https://artists.proofprofile.net/proofs/artist/744bd0e3-800e-48ad-9934-98fe75c16e66.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 0xa0f299d4c2f48b14c2afe7b076746f98f88dcb45fbd9bfca67cba43e32ee3e2f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZ7U2570878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e542deb64e8b9e4733f877e55af8d320604dfc6c4af3a46d113c387868129b. 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/QZZ7U2570879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0473018ad474f98512d81cddb4c1411eed902c588ea0787cf5e3b905083b1516. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7U2570881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd16484486cd6ce15f670de1cf3430f51e7549a208f6705ffa3920f2bb5ff0c5. 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/QZZ7U2570882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237010d497fe474bf8d72c920310d9b1f941c78d28de1f17d91f347cad025b2. 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/QZZ7U2570883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c0b02403c3cc355e67953aab0d194bd78c8777ab0e3b6f2bf253202357ade. 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/QZZ7U2570884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949272d5004674585af2feb7b356386913e2d0b9775813c99b66765420d27cf9. 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/QZZ7U2570886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17e3957a743138581179d3ba72bd34d76a4f4cbf6927c2616c9d9ab602d45e7. 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/QZZ7U2570888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7462ea76c9c53c2367d07eaea6e731fcb7f740367b1da5eebab27917630d43. 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/QZZ7U2570889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10365a7a2e314ac71eaf86f3a921ac55c46b1ea6486938580857390e32f541b2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7U2570890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe101cbca43fc79d1af70e0d73147d4649365396813267bed38b58690ca54d. 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/QZZ7U2570891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98a14ffea4b2f3aab27d8d0d5dde8cf9179690999212759b035443d3016c0b3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZZ7U2570892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76a3ff168f16053126bf74e03797b50915e1f670eb95f02e5545c3e697eda07. 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/QZZ7U2522846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bfa1fd3fc1de00fc45a548ff2d2082ed1c047221a58df3d1fc470bd8ef639a. 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/QZZ7U2522847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e8ff49fa5d00a4b0924021367dfb2988d26b4d4d09d72fe75f4e02b1a593f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7U2522848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572329e19348c7c87326c46971021bb7481da5bc02a1f1e0f09a1bb5525fa1c7. 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/QZZ7U2522849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4a7f49eb49e0a0d58604f1c55c65d1593f9027672c86332693ef384d3d2177. 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/QZZ7U2522853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70622cf79dcd09d88964521517f7c3eb01523f195bc45a45c1b889ec704ee159. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ7U2522855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829d69adb104881f2ab639d4ee1a22679c4cba38ebf7f7e21d99aa537961e187. 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/QZZ7U2522856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a50aed30be11619d93169f442b422257133336f71072f094bd8196fcba68c. 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/QZZ7U2576762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87e2221d55cb4a1457c7fd7a698c03a7238aeb0e14e6199adec3954293c1bd. 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/QZZ7U2576765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed969fe4ee83a943c62ac34f95687544875dfee8d936e3571591e44f62b2261b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZZ7U2576768.