CGF may refer to: Carlingford railway station (station code), a defunct railway station in Sydney, Australia Commonwealth Games Federation, an international sports organization Consumer Goods Foru
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 0x04ba43ed46611fac2925b035a20ee90c21e1a4c9e086c3f00a5f053c492a2c74. 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/9d0582f2-6276-4503-8bdf-af686c87c6f4.json and https://artists.proofprofile.net/proofs/artist/9d0582f2-6276-4503-8bdf-af686c87c6f4.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 0x09591ef27c44f8233eca946a2241ef35a0fa6f71732f3fcdfbb0b86811f4e58e. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZFYY2417723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b224102b466c5f96e43f2a50e6d5b3bb19391530d290153194b0e0af9c21651. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZFYY2417724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28debe4797eb53fcd7fc2312b3c77b4a484bfb880b27e5c530ab88b100b46b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFYY2417725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb782791e38d45ccfbcca31dbb324566e8f3b8a106846239c450d6ec1e31910af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES92404625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f76d7501192ec58045fa395af309bbc34dd7d995f60b545f5b8fb7c79b1e2a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES92404626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0e7ae9bf68df191007c8bd21945fa54c6259b42fd7f29a765b19cba3cf2971. 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/QZES92404628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b387f69894f8f0de3c253c3e9233ad23b188c1fa9882fd27fb346d2450aef8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZES92404630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a67c7bb299927bfd25ab5e22349c47a1792969ce2ad58fa5de75cef92fb4b06. 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/QZNWS2444124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816d8845caaf9d5fc85990c74183315d95f3c6b09cef76dad0f67a24e39bfb9c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB82438577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27192427eeed9688bd7e34529d121196f288611e79868fa6f675f1f32496109. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB82438578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2579b047dac2427a91a3a44a5397fd4282e5f4591cac7b4ca48265066c614997. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB82438580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0488c31bb79bec09b0cf84303a2a83bbae39a769dc1993e89a26c7106cc5c9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZZ7V2439171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfda4190e56e2231129cfe1bb01cc05fbd1a3fa84ea3348d8ece296db1c63f. 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/QZZ7V2439172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d3868e86ef76aff95fec403c05c50a54de0f2e28b13939ec7c11afad778f91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7V2439173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0681d13586e00645041828f90cb1d74b7a7c4debb3735030aa99a960c5184f. 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/QT3EZ2481616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1b955849d6a8c784e307ad805a900db444f8a1f897993dc8bff8a31e55c57. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFYZ2576970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7995b6317f94f5cb64ce32bcf14fea38a41d04c8a2c81f480105bd2c2e8c7126. 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/QZHN42563054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4313fdfab1e25309007a426480d538b1d89347833183566d88fe28292bee180b. 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/QZHN42563055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecee0524bb916ceaaf1836de69b690783bfddffa9250d25238152f7fbc3352f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHN42563056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5826107200ab848a949fcd7971b959f4903b9c2453dbd07554be2d0e4e248e. 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/QZHN42563057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0397df269d3d07774e4d2e1bb8bc4f57e76d85ee9f1f559c1cbe0981a53dd3ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2564298.