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 0xda853b976da288f9a6aa97c63e701d62eb0a1c344d53ca21b10866c73a21f54c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5b7c5c4-c440-456f-a0e8-780132ca3ac5.json and https://artists.proofprofile.net/proofs/artist/d5b7c5c4-c440-456f-a0e8-780132ca3ac5.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 0x29ab0ca5304f0517cb67093874480a3d2ad82dc1b07a22dd39d6a86909aa7479. 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/NLV5Z1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54795a303847124f255809642c237533683780c8885e72a2ff5f35260acab953. 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/NLM5S2000763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83f9c82d461a0c18c9c670e3aec5cb98e1454897e2214d93e5195f75351a21. 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/DEL712010290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073349ef54123b98f1a131460c7a4a2242a7d2d48e8a9c1146ed8a4dc6d61e43. 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/NLM5S2101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0acb3d49f072c1fe7e9e406742390b8c036e4936e607a9a32e400bd1193df. 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/NLM5S2201596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bacdce4a63db7522dc258c86345dbeaec067f5cfedcd9b328ee99dfeae15023. 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/NLM5S2201597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc7ae1b5af6fca314d79d5184de7e1acefa8ff3b7fc898a3ef416a3e89c7b2. 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/GBTDG1302163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0c229d54e6ac2438cbe901508210c06791f1f628b8445792db4a0863d63572. 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/CYA112000664.
Not So Bad (feat. Emie) [Zonderling Remix]
Not So Bad (feat. Emie) - Zonderling Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333627e729adb689efc999871a78700eda12a4267b64cf261980a873c4aeded2. 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/NLZ542000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73c5edf74957a44035b55d078d413136b58ed46490f2df5ec0a9ccf9a88f4f0. 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/NLRD51959661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b72e42df2d0c9ee25281e0c2dae2afc8b63a0c898a18c612d26a87b6473d0. 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/NLZ541900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559c11a1c3bd1607c2d88e3e447496c507e26557a5cbc3f041e8fbdaa73f5605. 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/NLZ541800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5a02a88427fb769dd219fdcdce0a56a9fbda38d2270eb26a9e28bec1d79300. 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/NLZ541701578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1eb150579530d897fd75c0b93847c7e5068c517280d4077e4030cbeadb0d9. 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/NLZ541700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51178ed8b501f0c26fb47b70f5cfc110e3f960d5ad0383e22704befb3ce6fe58. 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/NLZ541601463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae1d63ae72df06b6803bc86ec1d128ff74d04656534f5fcc5db936cd95e14f1. 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/NLWV71600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd038119668f8690ef077b0ea061706d896eb2deb582cbe535a62664a54c0182. 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/NLZ541600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff338211ad5684d0923355b81c03ac389823f53b3c22582422cb98a8d9f85aa. 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/QM6N22497875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c477f8d0b3b4aa0e0f93fdbe1b48452ecfb938ef0da45c33db02aa02577407b. 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/NLZ541800151.