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 0x7bebcca5fd02a0f32224c2571dc06108ddb44a6fa0d116305fde6d8073b65749. 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/177e1bbd-ba78-401d-9363-9c94a688bfd7.json and https://artists.proofprofile.net/proofs/artist/177e1bbd-ba78-401d-9363-9c94a688bfd7.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 0xceeb5334f7c4935eec25b7238351e6ed03c1a070c54417b2fbdb2de41203a7df. 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/QM42K2181707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16c4e9353eb5293f1301e218e128e3f80ef668e542a42e7cb212c93d79faeb8. 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/QZFZ52136292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f19e410c8de4f5c7845babdf55f6e39138da0c301d1c5ce84c2e59fbc924ef2. 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/QZDA52115304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9d84cd2b649952ca6cd1d3873e199948c879b9310ca684397a5e6622dc73d0. 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/QZDA52115307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4addd2d79898574f7efd4d551fe14494df80e7f5c6f69f421a00b05928d052. 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/QZDA52115311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f227830d075a04a501c603a24d51aec42529c7fb3f0945ca3ed11c0346282e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEP2183112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa20040de6ec64c7aa5fae1efc1f1ca12ef2aa292867c73b24f42680f9285f1. 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/QZS672178617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ec6fee34c2f27a66e0b35a3bbdf73a401ee0bb3982f0059a383979a901cb4. 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/QZES72111333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc148adfa7aa8518306f7db8eaca7201bab0bf7ca5e3cdf1d14f6c378490ad06. 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/QZKDK2105449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16c4e9353eb5293f1301e218e128e3f80ef668e542a42e7cb212c93d79faeb8. 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/QZFZ52136292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c72ea83519e541a80c2dec25d76bb86818271a80c3a7a95fd245ee61faae4. 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/QZMHP2085821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4846065586d03798b945aa5b1fae4deb7e32f5726a6edeac282d69df912e61dc. 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/QZMHL2058535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccca359dac3fd44a42a9c9a86cb830a5c96591fc780e64df77fe54110a6c460. 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/QZKDK2076583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba84e3ae0054ffad018b6047187f202385b3bcdace90e081e823925b07fe61c. 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/DEUM72002378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92559d81f206eb6bf40ede66e1b71b8f3d82a5fd647096afdee304c83dd2d4. 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/QZDA72011067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16fe0e961ec3e04e3ecb1f0dff88b897b5fdcaa122a3bea1f376888c6e0dc9b. 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/GBKQU2014410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1723ba326eb1e970baf19684e673220b59b00a482dee3849e32337c9e4575341. 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/TCAEP2083990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3687e773975bfda449776dec7e7c6ff952158a2c0fc33804b293004dc9cb4c2. 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/TCAEL1993780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f573231194933bc43346484a72cfc571888d32d35c59fdead3f49c14a34c024. 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/QM24S1919446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c75b8344ebf8519ed0049b6d8d0bf32fb312db5c189cf3250560974459cb97. 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/QZFPL1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac102f9f605525518f3799e944937e643780389043ce2e1f02641316d65f267. 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/TCADU1857373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f68e260228603a7271b535b70bbed3b3604e392d31d24348db0b88d3f0207b. 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/TCADW1861904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84985f14833860c5b8fb19ca178a4f64e44d8ac5acf6207482bd796f954fff4. 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/TCAEA1963257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53557c4349e6ba855a7cfe70d8d2dd47acc935e10be8a78dad6d6921990bafbc. 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/TCAEA1963262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ba8be0cb74add9e8c470793530cd7d5af53c0e754784702ea29fb1f364b01. 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/USUG12001200.
Dark Horse (slowed + reverb) [feat. EQRIC, PHARAØH & FJØRA]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a439b0f75fff8dca1782020f8108ab4b6017e5bd30e8aaec8c07522cb8ba224. 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/QZS642267313.