OGC may refer to: Oculogyric crisis, a dystonic reaction to certain drugs and/or medical conditions Office of Government Commerce, a department of the government of the United Kingdom O.G.C. (band
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 0x38d54fffd674a51a9318c6f4ab80caab67113e8fec54afff3071bc092bb69eeb. 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/32067a73-b25c-43a2-8c57-28663415b2c3.json and https://artists.proofprofile.net/proofs/artist/32067a73-b25c-43a2-8c57-28663415b2c3.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 0x521c0ccdd3c20941e6beb7305085d4b06fa8f09a39e19b1a810adfdb2e8e63aa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJX2286112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcd45a45969d89a4db9b4394eeda26db9d5b142f93aedd4fd6ea92cb0e66d0e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXF9Q2439591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f57056771e49d32c094c35d228ca9d4e0f7a7081f634ea53062c986795a1dd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTPX2210313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0fe9a44336e2c007c37a0abc4157f5a71f12d8147940440475e6535b5f42d9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTPX2210315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a4a0ca9223c1198878529603758a0a5adc98b976b5ba741d00b5f96211ae4d. 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/QZTPX2210316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499804d382825d9c3163bfc67207a32f0b980b00aad7bbe4abd12f85def1634. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZW9M2227465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da6f201197ce6499b9be35208a74413a70a36a54a373c6719e57651e3b5f434. 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/QZNJV2396062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c09956e9e21af4a9f1d0a450c7ca201f00d01ab8fc80485e76238143b99b25. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJV2396063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc9038d1fa66c17fbc292f9d725bb15a1b32d1d049c890563afd84e98385cb9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZW9L2317365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0f70e2901652ad1b52f5fc6a029ede4bfa73d9f54a4a46536329cd0599aef. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNJV2396057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacda6e64d52b91229d5516942d20409179626a757c8a6ee4c1bc8563b9f4fe24. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJV2396058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281643fd0cb594d034b33bd644699163b39a96332764bce3ff2b1b5a884ae82. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZNJV2396060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c09956e9e21af4a9f1d0a450c7ca201f00d01ab8fc80485e76238143b99b25. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJV2396063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb880444cd3b5ade32e7c8088aa4ee89cbfc5a6221655c0c585777fe8aec59a69. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZNJV2396065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d34ab923818266766502a7c0a5a55a6218dd07a7fb79bbf43215e109a4591bc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNJV2396066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb303553defd6cf868658320ff0736164b34329a2e55592071dbb6bf9c59a8. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZW9L2317366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba5fe66fe36c7e69438e8884da7b2b405cf394914e17decc88bfb7959e760a5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJV2396068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6890e300e2e6816fc330540df109902e8ab93afe6fcec865b4028389b5a9ed2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJV2396069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2e6ff037cc976aff8b07c22bf979b14a328326d86b2f96ba21affba199769e. 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/QZNJV2396070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfb2f816f447ee99a409ef87638dc2fe592b512cd18da29be4339c904020521. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZNJV2396071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca001836e37fe8c2e2be2e005962804042ffb2f16142edcc40c04b914030c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZ5AB2499860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba14b358fee2b71728fe2634e9e8bd53e87a433c0875682128cf24a4649289a8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJW2415469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce6cfa8c2a3290c34860599a1e669dd15177824530eabd9150f44630bd1de1. 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/QZGLS2381004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521883bb11651937820874eae6316ac92079866d25e5ce088a8ff768289817ac. 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/QZNJW2415470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43a823a3362d2e8c60218d321131d580765c10a68c06ab6c04c6cc61a2b00a2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWV32567968.