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 0x4009b4377569128e7a2f357280f022577d2367e72d76ff14264841903bc436c8. 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/802050ef-2de1-48b7-b6a3-93e7435bd52c.json and https://artists.proofprofile.net/proofs/artist/802050ef-2de1-48b7-b6a3-93e7435bd52c.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 0x294698f180e55075e0403f4d222f1297fb66b5fa67837e29fb41f24fadd2c4d8. 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/QMCE32100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eee4c15fe8c6545b15b27ecce3a41ae9c41e61ed79a87d2f5079aeb467fb25. 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/QMCE32100618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ceea565864fce2e1ef13454da6dc78da9a91089e40ecd35a2c1dbb9923680. 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/QMCE32100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff53d7f092be3e51778453603dc813c15ac54320402a922b68bd378b22516914. 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/QMCE32100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeef06f22b8a2e3bcd4faedf68fbcb7c7110899ecdcaae82663ce8f0a91b7b5. 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/QMCE32100620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccdff3daadbcbefc684ce2767183dabb9a52ffdb85201a349e3e07cddeec923. 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/QMCE32100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346a5dc9c338f514975b530bbe2f5d49de9a7523a15127a885e1bc063c4ad8f5. 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/QMCE32100621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d1911198e4af97ffbba127f7fe0930eecb99c5e8c92ba43707d4c352451b7f. 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/QMCE32100622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b68a1a8520f326603124d013b04b1d9a06148d826156cbd3565199e0cf31f71. 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/QMCE32100623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab8498f9c18869e7433d2f5f0b8a744a6d9c81fbad4216d33276686da72f7c9. 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/QMCE32100624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46257b84ad90f3711a16b5e253f526989daefc320910c47807170a3bb1eaa0c. 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/QMCE32100625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746eedab349d4f1ed6a5aa59139cbde5154326bf9a90952b0a24d779ac5147a. 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/QMCE32100627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a264a0e3cc8a7707aa451205309ea0f4ae1e9103d82e71d4924a1a7af6d4f4. 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/CA5KR2363058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaefaeb6bc648e21dfb60a61dd0387c351673bc40a4e21022222127f28a7083a. 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/USAT22302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535403037e0a69d5c26bb09ff6fe1150dfc327a96535c07bc5f23025d81a5fe. 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/USAT22300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ceea565864fce2e1ef13454da6dc78da9a91089e40ecd35a2c1dbb9923680. 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/QMCE32100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccdff3daadbcbefc684ce2767183dabb9a52ffdb85201a349e3e07cddeec923. 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/QMCE32100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659e666909a9a89025dbcb3d8dc2fb051b67d20b4a4863ad5e7ea8d31ff4b6b. 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/CA5KR2158103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00174d1e4b0d2b47e0f0f9b7e0e3a81a784531eec1170c3d911666c1645c94e. 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/CA5KR2142526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1e1361479fadf8c8bcaa3540e0ab60386b95807ec7d0f31fe81fbf94e04f5a. 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/CA5KR2110327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabddc84b6ec50d325ecc7d5b9e59f43b14e55648b9d83ad04d524ea60c088d40. 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/CA5KR2071958.
Paid the Fine (feat. Lil Baby & YTB Trench)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e46933f64653bd05b3887229dbe567b6e0561b2897d8c3d42d8f9894856521. 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/QMCE32100200.
Mob Ties Remix (feat. Unfoonk, 24Heavy, Future & YTB Trench)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645d94976fc5b159c94b48875e65932ffe81df76d6acb27d001bfcd1281a2afe. 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/QMCE32100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703d351ba817aa3f97c78bf840a6642a7c4a7d72fc3e8cd6cd8836f1abbf663. 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/QMCE32100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703d351ba817aa3f97c78bf840a6642a7c4a7d72fc3e8cd6cd8836f1abbf663. 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/QMCE32100216.