__NOTOC__ Year 246 (CCXLVI) was a common year starting on Thursday of the Julian calendar, the 246th Year of the Common Era (CE) and Anno Domini (AD) designations, the 246th year of the 1st millennium
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 0xe75437ae0a340d8614905896a6e054a30f4bcd8eea4c495a7db5597958c0549e. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad64f134-76ec-4973-b0dc-cad29b6bbf09.json and https://artists.proofprofile.net/proofs/artist/ad64f134-76ec-4973-b0dc-cad29b6bbf09.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 0xc30cb166afd3c9c639734507b6842ef76d6885c09c3d5746c582a2fec56d5497. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPB531700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e864894639415939e6e6a3da756cb71d5356510b5acdddec18a9a4d0706097. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPB531700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71dd162e941d89ed01ac40192c3b4174270b4fa3649bce5dd3638954960d70. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPB531700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ad923e21986b9ef9f5c4788d894eff38ed9389d4ed999127785a6336cd3921. 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/JPB531700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6989865f179d5628089af09119e76d1cef76b70d1fcb512d8c8072051b8ffdb9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPB531700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1504fe833420dc93d151dfb916f90e79007a72ad98904bc52d4f4ac20d4f45. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/JPB531700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997fcc9ecd07a5bba04b17fb9b14f7f1ac32adb75629bac8d1808352c84a3168. 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/JPB531700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccde389d379688740c16e3a3e1cc2f1311f8399e195dcb4cf0c953b6e3021ee. 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/JPB531700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfdc0df58d9a3190af8ce9a1c35be6737a5fbf4229acb26a31ebd341f2b05e8. 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/JPB531700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa69d56c22370c336cd1d1f6a8464111f6b305e4084286ef57e42afaa5e8cd1a. 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/JPB531700047.