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 0x58cf6a8e45d389da01a7c355b79ae646fb461b38717559e910807273c3962e3e. 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/d071438f-4de0-474c-bffb-8051cc51a46b.json and https://artists.proofprofile.net/proofs/artist/d071438f-4de0-474c-bffb-8051cc51a46b.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 0x740d417d8c12a772b1964125fa08af7f6a5a723c1c862e63e6f3d0935241ddb3. 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/USUM50211831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd787ac801e64265f974841b1374ff93feed9f803720a9dda619b1a99d8ee43. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:11:52Z), 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/USUM50211833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bef88498394ac0e1285521e7fe8f1b44845054d8221c9792c18c17c4306108. 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/USUM50211834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4288507804c0408f90bc355ab88f4455ae083ef483da1d90cf05be63907a11b4. 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/USUM50211838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2963be64a9c30d6664416d3b8cc5f039cb30f17796ce79efdb07976c6f341655. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:09:09Z), 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/USUM50211841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367cd9589e025a800f5834a50633a817e828a854367a4fc0f73b67174df989c6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUM50111844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46c018e76852597582f100279949f6abc23bd1d6cf404dab45f9751d3848da1. 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/USUM50111846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a217f52b703a0c1b707d0b80264f3ac8fa0beabfa0587379d60b749524ed717. 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/USUM50111847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa28d30b8af6f8c857e69f8b9a0a8e9df321101092b50d78039c75209f92931d. 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/USUM50111851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c202ea80a000c6e8c310c9b375737faa2df7c8e6c461fc92b28e09be8e26c4. 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/USUM50111853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd86b927e281b218112b737b226e16d20f3dc735ff7ee0d578dde412d03dda8. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:41Z), 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/USUM50311009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5694a235b300ada83c46bd1fb2b4507b6c641cb19526cf57b3270301c4d73406. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USUM50411273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbad9d84ea2fe30ea91331ac809bff94d163c17b7ee1f593e1776bc8142b950a. 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/USUM50411274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5293622efa8386023711c566c376adeb8391d1ef7d698431ef73432af9777ad0. 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/USUM50411280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddfcc4f730743e2ec5d69ecc39bcacae2ded003d29f84245615380a21db7749. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USUM50411282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b699c4c7b70ea8b5ed194884f89586d9f93c9b5c8d04a5512410529cfd78b7d. 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/USUM50411283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3864600789c488e7f84c9a6be918abf8c16885817d5469937e0867e4df21a1b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUM50111850.