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 0x54ad5ba9e8d80520f29e8ba1e906e3530d2f94b2fcdb3a1296cb104941f291c7. 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/a252a7fb-4f66-438d-b12e-3357f3bdbd0e.json and https://artists.proofprofile.net/proofs/artist/a252a7fb-4f66-438d-b12e-3357f3bdbd0e.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 0xaf096154a9c6a00ed21774e46bd7715b33c60d5a10649f8d6027dfd1e3b92089. 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/QM24S1837308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ead9796ce0da7aaf3de8bc9bd2b56254f163aac1acec1567e11d490a7e9e43. 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/QZS7J2452158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c2057a730c6d2baafa86758882d393b91f176f7da87fa585c64239326aa838. 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/QZTLA2467546.
thank you but no thank you (Orchid Quartet Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfa31d9ade86be9ea23737a1b242795b07c3100a31775c6b9a788bac92c0f09. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZS7J2269817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef419fb0ebe017b2aefdcc1f64305543cd69239c21197c1b5339226df063920. 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/QZQAY2158154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c381cadc8c6a2016be538bc2b4dbea9015a74c181e2ae5abe6661b1cfdfe6db. 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/QMGR32171668.
When You Call (As Heard in League of Legends European Championship (LEC) (Miwo Remix)
Uninvited (From "Little Fires Everywhere")
Uninvited - From "Little Fires Everywhere"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d459dec9a7a1451be3e9584c48e9cdff5d00dfa6d96726c2faa00005f14e23c. 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/USHR12039843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835c72c8251974713135e1e874ebbcf423c980af168dc20edbaab99ad773816. 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/US92U1901072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c689fc9666057f2ade6e4d2375c6b709ef02316b69252d3b20314699c8c649. 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/US92U1900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e0e2a0bb328ca0c7271485960016ec6d37f56d32ed599a5d76a5135d7674ab. 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/QZ9JZ1765877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9304d9ae9edd8858694f836e95f0978735eb09918deea3fc01d844b9cc6b505c. 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/QMREU1844006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7162a15953ab08298026226e30239f39a3668dfb115fd5743206d9f3dbcac18. 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/TCADM1854209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e860e2ac65bbded2751ae00f3f8b5223af3fdce605d6c4ae3eaee704f5be73. 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/TCADI1732981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e1af0a3b4f794ad8889a473699636721a9d029520bb6bbcf64c1c40072c9a3. 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/TCADE1767934.
Losing My Religion (Tom & Collins Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3870e9cda73177dfd717756baf5919d12dfaeb18c2a518eafe090a4e1065866. 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/TCACX1734530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba47f9126617653b23873d054c55d4d05bcb3ca0a5d3f78ceef1969dc8c4d0bf. 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/QMREU2014007.