{"copyright_id":"0x6a155bf6c8cb82f5be16e84ed7d064f7fb607b6bf5bffa4cd930891e2a6f4edd","name":"Solid Circle","registered_at":"2026-06-12T13:16:48Z","symbol":"NIM0309068","token_address":"0xad4f00aba5fb4f9ab3a7c1c9999ece395a59eb98","type":"artist","uuid":"efdc8bdf-8c18-40aa-b1e8-8e881f086ece"}
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 0x6a155bf6c8cb82f5be16e84ed7d064f7fb607b6bf5bffa4cd930891e2a6f4edd. 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/efdc8bdf-8c18-40aa-b1e8-8e881f086ece.json and https://artists.proofprofile.net/proofs/artist/efdc8bdf-8c18-40aa-b1e8-8e881f086ece.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 0x79a3bcf0142d53a8c9ad73093b669c6d98922045c84886e834bc8cd2f04eac81. 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/QZDA52223509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b92189ea48efaed6784ba2777c2c20f2323521a2644662bb218fe06612e19dc. 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/NLCK42234384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcad3f436bf3c80e2a458d084a45d253d922cd84b72deac3e4b1a7e67b71945. 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/NLCK42234385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3aa0a1f01c0ba35a08e206486606a1f96d005a2cc7fa020376c7fc7e6e006. 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/NLCK42234386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736ed0fb5e90ace2e6ec7a025647a8ca59335cb0de566809431231dd8ec80072. 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/NLCK42234387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7129c2dc2f37ce8dc7484ca69515f5d80449c7260c734225822d1a2d9230ea2f. 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/NLCK42229801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f3e43c0f4435d006f789988455d6a37109c1b52d36e5a3042353e7eac0085. 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/NLCK42233014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d94536cde8a9e13061a15983a1761738d82c91e8bb7105ed60d333f9671c4. 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/NLCK42230975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf093e23d12ebe69a5e8f06b0c70c72889d208ca63e0daaeb96376d16e1062bc. 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/NLCK42234388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffa7f64d783569879cc5272cbc08997a9b2a1d68d62dc78dfd6c13eeabf707f. 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/NLCK42233898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b41aa48605dc1abe6704bcf6a1d5f73b19afdee8010f6e7e1b78f45967761f0. 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/NLCK42234389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03373fb104229ca65ca9eccdfc038f62e957fa58ccf54ba517c7cfda5e3c1c7. 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/NLCK42234390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7af87fb2e68bc120b6b27058820f1fc7d4829753dc8ec4743218c08a2dee91. 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/NLCK42234391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5334542b5d76f309c70ae2f01a00f3551ac484d579b0c8255830c559c47127e5. 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/NLCK42234392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42da24aa0ffa6f4f2423637e5c6799b1cea8389d14916212c5d0c67866b8775. 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/NLCK42232661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53a77c49dfab8db4109648691d0f8e6eceb5cde318f308a6cb9072dccd2da5e. 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/NLCK42232662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044f3391f39281b907be337b694c83a8f82645050d1478aa9b04baba5e12058. 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/NLCK42234393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f9c83616af0c634dbc21efdede8c12c2a03229e845d3a4e8570eb74d9755cd. 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/NLCK42234394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ab0b6c23a193e3e8810e54f917de1d5490b24c0cfa5413ce741fae19939362. 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/NLCK42234395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876319bf1ec1ee263d8d403f2c4f9ddeba37e3b0289885657c1011c97fd8d104. 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/NLCK42234396.