IC3 may refer to: IC3 (train), or DSB Class MF, a Danish train IC3, one of the IC codes used by British police IC3 (certification), the Internet and Computing Core Certification I-C3 (In-Cell Cha
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 0x160dfcb0138923691f864dafee71ada8456ce62c906dc032137965fc9c747b51. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75c231ec-516b-4e87-83fd-351eae00fb42.json and https://artists.proofprofile.net/proofs/artist/75c231ec-516b-4e87-83fd-351eae00fb42.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 0x6f927fcd8f35ac503e982d12c8cbdfa1aaf172ef6fd845322771ab9e85f66140. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/SE6XY2514684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4880a4e9c1425cc478d51197e4910e89df499d2f9c13af6cabace5198fda57. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6XY2594606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c332bea778595fbf6a3adb9ba875f6c7ad7ff16f6a4efd93c864b1ef35f080e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE6XX2519826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf99619fd7d6fd99961fd1d230a20bcc9d5739f90121c0579bef1ce9dc0a51. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/SE6XX2519829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc893ee497329c9e18f2c13ce62e70b1dc180879b8bfb222e8ce3ba026f904f3e. 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/SE6XX2519831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b45917d0a27196e87106efd7d564f050eabaecb165d6ac1a8c772fc54ba944. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6XX2519832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18411385b603143f31d73a4a65f032a31bf3a10d4fdc17683dce8b1c107d14d5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6XX2519833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e951a0aa9604b779cc965e2920137146e95949b5ceedc24031543ee5afddb8e. 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/SE6XX2574159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e7932a3846937efec80ccd7a1d1ce16bb253b1faee741b0614735a1892ba48. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SE6SA2562278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bfc2dff3b187c79a632cc6ff3b7d75a67ab2c6992526c6648fd48d311cb1bb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2568983.