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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40768acb61e7594a2507ddb4896f881447135696bc4435d253de564ef25cdcb8. 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/425ff9d6-b26a-4bf8-870c-a41a605c892b.json and https://artists.proofprofile.net/proofs/artist/425ff9d6-b26a-4bf8-870c-a41a605c892b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa108f0e037734a69fc0292763b02ba028b562d93d8378c017a61f04079c1d7ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAHS1300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004cefccb04714f9b5f61e7717195fd5ffceff17f8eac35725b83b4f3bc4b85f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c4cf040a14d9a67aeb5015311f60d2baa5fb21dd5f71eaa99d587c49b4c277. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1400019.
A+E (feat. Kandaka Moore & Nikki Cislyn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd8424a6127530f52ec68d696854ce331402f83f311b8a90563421dc92c399. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAHS1200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8535993c59c8fa3d880e8f8273c837558938faddbd0de03df61458d1c22641f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e4cd483a007ab6cb89d229bef4eafb440d2185f8191c886c4a72b2b2141e94. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e021360dd928825015d1bd272ad4ef58ae350bb9e0e081ac5c9a111ac0f77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb740460702c97f1a28d0169efcf20b8f8d43af3e8116f3cd73dc9c229e872c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3890bc732cb59b30af5a7e19a79ae4ea24465ae083980c745f4eace2d09c0006. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a6a483415337f10051b951069a029f9ee446c19056f83a1aa59bbd509f445a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d8dc299f663d935885e5d6a36a331376c23f7106b3cab46b82284ca0d161ac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAHS1400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cb8d1c786ff68d3e4b249c4cba4bde9f1dc2334f15c65741022564647e0195. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a2e20f0b6089bb3fe17c1c5baeebb8850d52520207cbb027fc1d291a2b0d1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAHS1400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada27e4578564f1ee3c3ecd9e4a2f96349a427259e7ab3681be0dd212a28dd91. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAHS1400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162120d1f286e41f1a2e3e3118a0eea1b196d591f02419386fdb2975bc6de73c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLVL1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ae6ab65e89189ab79429f44e24d59f9996446124ac72f5e4ac47b71e24cf75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d263ef0533ad7d7b7e96f1c8d738dac6f0ffd7a0033a7313470e30fbba255c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec15f348c744b1405e9b74f4d6f9785f6430c87b35b1c0e8f917abb0824d88c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc42eb2f758325be5dc6503607b7b2a4abebbc37500aee3b370cb3e366131a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878eec4ddddc5282f608fa16410734b159456a6fcb88e19283ecf821fd9872dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d6ca44cae76f0540f38551ccc44f9f24b6bb59bede61b797906da1c4ae03b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEEK22100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e77f919aca6c0b6a4f1062e731f106150f16b49fd57971bcfd0c49e239faf. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:33:33Z), 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/DEEK22100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca12eff8882928a4f4282a2a292c25bbc6b9b50a72e4cda163259bf96a9c641. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEEK22100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c787dc67e31f61112243ab07c007f53f249b9b03eeb83681c9b4e4db886ca2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLVL1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9af76a25d6fd9d44096ba75d8c34901711b89a5d12b46bef394562e9947a581. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEEK22100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb02cde336235bb573f7d530cb7c4ae4d134bae9592e338a91bed71916981ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UK6KW2000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45274c60e1a897a4b3918203c46d78c2dfdd0bc8320d6a69b6482d65fa5e37ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME1907045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3f5d2e4559d2de24e1a0ff70b9472f1cbf204980deab582051677fb70cc7b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLVL1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa108f0e037734a69fc0292763b02ba028b562d93d8378c017a61f04079c1d7ee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHS1300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8157591ee8df1ce38da3ca65cc82140dd42de9400f34f7bd98643273deba30. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAHS1300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee316c48fa4485ed8844f355b8f252ddb7faf590efa5dc679b5f18e0f5c060. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAHS1300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864853d1721e5d89ca7917c1ec82436386eff7f42097708c757a03a378ae96dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBCRL1900020.