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 0x313ebe88a200f78fe570202a0587e9589978c1e316a0441a0de05a20e53511ab. 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/c2833e23-251c-4e80-993b-d0c4f799464e.json and https://artists.proofprofile.net/proofs/artist/c2833e23-251c-4e80-993b-d0c4f799464e.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 0x575669bf5b046332191c784bb78a6c82569fffcd04bf7bc52a645bf21f7f6498. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:39Z), 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/QMFMF2372654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8635f8486f92cceb500f62fc21e00b4de73ac8075e012cfcfc2a815f8f973f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF2372623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603cb54fccf076f0b80c7541f73c4f0d35e62edc1c3cb733b50848b256dba264. 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/QMFMF2372640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26405b985823d0e88e9dacb5836dd002467648b8a476e27ca8e6efda4fd6963a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:19Z), 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/QMFMF2372652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba266bd5a7d6d1b31919cbd7023932039998e3c0ce45a14bd9bbd0dda05fe89. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMF2372624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d52e70b0c6b9e5e52b6f9f07381f4dc09ab1ef2ed6f446a493e568586df54af. 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/QMFMF2372644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3520b50ba9c31d95297072ec1c5375715d5fefeec594b75cb3504f6955ccaad. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMFMF2372650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb534189815d96ba74e0670b3d35c828450ae6e0f18c1327446b4d0845730e9e4. 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/QMFMF2372632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692fe8fbbb691e9cd96caaf0162a101139ece84520356de92ac9643920b4bbe0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:29:15Z), 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/QMFMF2372649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca88be2835d5bf1c133f4533856b0a675e4c545a7d828919ccf54971536fe2. 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/QMFMF2372653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09bdc97307529599203b32a3645ef063587bfffdf562bc778d89226c73b0465. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMFMF2372664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b7f077b9afb2f1a72aff8daa949b91e318618fe1e8cb1d241b934581395a0. 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/QMFMF2372621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b5db39e7db711650c1440cca1c0d36ee4600302c5ec037510520eba1285f0. 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/QMFMF2372642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3788fd1b4a475aece037eab625a39ed47adc0b7e7ca7b837fef70816b54e1e. 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/QMFMF2372643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e69f6822b790f6d2f04e57fa20d123ca9e00b1bfb0b1a6ca26a5607a209b7fd. 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/QMFMF2372645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d09467a502b0e4bf6c4e002a20a15477cc8abc672def3a38a30cb9980b18d88. 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/QMFMF2372655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8b1e9c5e36b96aae86ad730a7a8e4c22f1cf186501fd32ce756104aa978bda. 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/QMFMF2372656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59015181a5a5b0622fc0a94ee02efbd45f5b9c93f6fe89c6ab4d4f237b2b5927. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMFMF2372666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3881e77fcb2bfe5f42c17a70d3537ba570e47ccec7553c0744ff9b97aa3e1114. 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/QMFMF2372667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4448f48615a40f3abf4677a89199405fda6eda7154e4cfad30764a44b570f3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMFMF2372657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb89321d7b023404139f9d40f4b485957ac9f5fd8b7fb0d5b19ad165549154b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:05Z), 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/QMFMF2372660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115c8cc679afb26eb7b44860a93e274f5336dea839abc6356c6c7df33ac15b4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMF2372662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea940ae2cf6b4d06b46ffffbd927a5b773e8660448d7901703ab2ca711cfc77. 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/QMFMF2372639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcfec30a6a328d59a8b4c88bb09b2818601aee4cff52fa6aedca7504d27be8a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:36Z), 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/QMFMF2372641.