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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3586859ba254c8af8d1f60109307268d5fbb7522b99661d2e5f3a7dbb592443. 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/a4746427-4ea6-4d98-8b52-e354e14d11c0.json and https://artists.proofprofile.net/proofs/artist/a4746427-4ea6-4d98-8b52-e354e14d11c0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd30a40a073a81ea496f9aa20ee2310921c6096f73dfe0f11bd665cfb783cb0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI101700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837259996a3907b7ed4adc8118c59941f9e8b5034a021236c1ffc1061fb421ce. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPI101800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd353ca8b62df5bd42bfd3270e7482104d91354180e5fedb619dc2ea699ab35. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPI101800775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1757bb2267e5d9c8276299c1dd1bbb7e28726c8e1e0ab24a38744f408981204. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:05Z), 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/JPI101901757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1316254db2a9c130cab41c3ee7896ce4f9418210dc63f92e1fa84e2d593504d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPI101600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418f77ef6055ff5072a6eafebaf7262a3d6dd5fd9313727a6b5ee4db0b618ea. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPI101702318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe087702f2dcd9dc20256db8b4a9a5014cbd1776496ce1ff8070641a351e1e215. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPI102102768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd810d6658f304ee435167a952da06e73ce284dc0b98264fa57657cc289cf4750. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:01Z), 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/JPI101600358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd353ca8b62df5bd42bfd3270e7482104d91354180e5fedb619dc2ea699ab35. 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/JPI101800775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1757bb2267e5d9c8276299c1dd1bbb7e28726c8e1e0ab24a38744f408981204. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPI101901757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1316254db2a9c130cab41c3ee7896ce4f9418210dc63f92e1fa84e2d593504d. 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/JPI101600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd30a40a073a81ea496f9aa20ee2310921c6096f73dfe0f11bd665cfb783cb0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:22Z), 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/JPI101700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547968c3a5b0cf64384084ab4ebec7a01cb42238609afd26b1bc6255340bdae. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPI102102769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418f77ef6055ff5072a6eafebaf7262a3d6dd5fd9313727a6b5ee4db0b618ea. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI101702318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684612d6f5e100b57ff263cbffced9b6a917329818d0acf202a6598b17c8fc6e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPI101901592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c45446106c90b08b55b8fe4d61f0b5677b1a75e2262ae622d2c1eccd2178aa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPI102202454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46899491948122f96b27fcc18f897838878839cd27468bc63b4e4909fde9a93f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPI102202455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c45446106c90b08b55b8fe4d61f0b5677b1a75e2262ae622d2c1eccd2178aa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI102202454.