KV may refer to: Places Kosovo, an Eastern European country Kennebecasis Valley, a region in New Brunswick, Canada KV (Egyptology), Kings' Valley, tombs in the Valley of the Kings, Egypt Companie
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 0x9d132b6c416d21b988c5416478dc1789e90d8a03f9b228b0e1d547b257a97368. 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/b13ba6ff-fab4-4751-bb58-0f227244b032.json and https://artists.proofprofile.net/proofs/artist/b13ba6ff-fab4-4751-bb58-0f227244b032.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 0xeb2157c860e4fdbce5ce841c54d920888de2c09ce8eda096f5bfb2530e2f1aff. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6541726333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d02a5683f70b6ff70c6a1a3cea42c8be72b0074bfe4095f39a86a3fcbdc9b0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU5617808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44275b0ad8dbd2e11c72b9284fd7f80f30dac83cd7f29f46074ddbbcfae9241. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBSMU4632717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ab4578665a4c672dd93228bb1b7fdd643ff1390fd11f5184eca65c3d45ef66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU4799406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388920ded97f79dd110371ce7db14faa3f1337be6cec97ee7bbdd11dc5545e63. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBSMU5174986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625ed961bcf2ba3be27e8bbc69eed96808434a95759ad3b3e513a3ec5ddfdc7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBSMU6088361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77675e7cdadfe3f920983ebdd77b47ee9ea7adbe20ac4178961a1fce6c78bf41. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZK6N2173384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea817fd3a53319a2985bf6b8c51e77c3970c0fd3ef5bdb56630ea10f28023675. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZTB32273818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe06ce3343541fb7a5474c1703b0f96df9e9578049afb6ca3fdb01c39522fd9. 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/QZDA72326069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e88cdc9df1bcd319206964a1235e1aecbcb5834602de8b29994ee23f9aaccf. 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/QZK6J2490739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801d907baffbaaa63f95e6b940786991df95d22aa9428b541ae4e9725c86b048. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBB2477483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d373fc30f503f2103774c4afb09f691a122e0aeb14eb092259270d407874dae. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QT3EZ2493010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff096e6f76f42e32c36134ff8d77ee5c59e72a7b4112391e82b2f5940616988a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZNWT2568865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ce9bf0e885fea8f9b8440452ae5fdc284968a45408884b0857f75cea5b532. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZTBE2505620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6883882849aa2d174f5e2a0081a64428d14b78098edb51fc7a37deaf52cef3f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFJ2502136.