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 0x142a8c3d95cda5ebaf7d072e35db12b6fad597a3d6c88d54c54a99190baada33. 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/FR8GV2292110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2537ae8759d85976fea8e009749bbd6e1e42a6a5ce69e77288e03cbac6932b7d. 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/FR8GV2292120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d4f1cca1f362005fd6fa7ede8e42274c33c617f7a03f880b92934f25bafde. 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/FR8GV2292130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5492d0025aab53625c8d3c49b22a014cbe9b6fe2089130a41ed812d827f3f37. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FR8GV2292140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f51760cddad51cb3911473f6052e1c9a5284085b72fb88a9b5f132fd6cddf4. 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/FR8GV2292150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b42b9b13ac9c05f48f02f694f1335655f5813c60019441018e37b48e6f19d0d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR8GV2292160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fde006036d39bdd14a0b30f131c06146a5efa6c0466fc1cf6cb9b7392a5ed1. 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/FR8GV2292170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3301e97f5073ce4f3ade16c373a17ee7d26cbfbb69646dd0ab832867ecfb763. 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/FR8GV2292180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ac740fd21658b7e6fc2f6199e32065bf180ff079c2014f5d2a985c41f4158. 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/FR8GV2292190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa169d5ccd3ea201789d264ef54c5916cf7ae55a106f1a3dd9eec1128eba7dc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR8GV2292210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfff05e5d8348e4b495cad628ef2b505dfa592f28d31ca921daf1c4b5bea1cc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR8GV2292220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174de3243b9a420cab2cddc100728e50c4b7ddf61638c8645a4e6bafd837f3a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR8GV2292250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fafd3443f0fda165912ce8fbc51a0aebc2df1aa5436a84d98b12033ce60360b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR8GV2292260.