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 0x0ccd1121f40901d165302adbaf6ec58b1407e873169172569afe0d9f20b7f8bd. 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/d91a8237-7afe-40ed-a5a3-e451cb1c8ba2.json and https://artists.proofprofile.net/proofs/artist/d91a8237-7afe-40ed-a5a3-e451cb1c8ba2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Greener World / Evergreen (Alternative Station to Station Versions)
Greener World / Evergreen (Alt. Station To Station Versions)
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 0xcbed13935ee410b62b2ddc916d9ad39a26cfc522b7457b5950cd5345fb52f7b4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKPL1825723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb45827b5fcf4df7b23f1c405b0071e0e122e6528f84d5f2b6c9580f4dfbe4a. 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/GBKPL1825898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e55af2150a8e20574de1c9b09bb728aec54ff6426d56bc44d55cfd15c6a42a0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKPL1825899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b5c0538658e34624e013145b49d5e7871679c3a74660b60f4838f653f45b0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBKPL1825900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2207c4a48629049f820be5046c68291e9a469b31dfe82d3d2d675cf5e5f20497. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL1825902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4662b647832914bfb400b14e97b7815159db0126d9bf8bda226ba227398d6e8f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL1825904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257a0107175be52c7fb02bf1c04c53b9c815133f8d6146e8eb65c2da0927d0e6. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UKJ2N2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c4b104f50c4b463fd88d5007d2a4d5275efa810c54444ae3de413b43385c52. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKJ2N2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e16fdb7796d85bae1ed03d9b0d88db8b53cb915aeb8bc538f713bc0c488e91. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKJ2N2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3250cdd81f52487d033e82a295ac06751aed8254d80e501516e20e86d0408e4. 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/DEG931791776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c73254887f5f8477f0c471c63a4ffb780d7129f4b7166bbc01beb156e150e1. 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/GBGLW1500365.