Valta may refer to: Jiří Valta, a retired Czech football midfielder Hermann von Valta, a German bobsledder Välta, a village in Saaremaa Parish, Saare County in western Estonia See also Valtat
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 0x6d2903324ead568cbcbebfb4613ac88524e053d8db0157ead37e3847f4737c52. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/805fe648-3942-4c4f-aada-755b4cf80f43.json and https://artists.proofprofile.net/proofs/artist/805fe648-3942-4c4f-aada-755b4cf80f43.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 0x7e404cfd8995afe88a91d5b3758add7ae214a2c9d9956ddbaf0d04131ad8776b. 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/QZDA82538697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08896dbfa219c738041f0ddbe0651485b935b7d75d5a5544cfce8dc7a70a402c. 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/QZDA82538701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785e20c310680b638f87dbedbfd06a3d1dbf024041657a08adfc0453b9210c4c. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZDA82538702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eddcd9d59ba5f2e1baa2a1dd8b3400994c6b8cbae92043cf012eeefb948897f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZDA82538703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c0ba67e0af4edc36a9d19504962687c3f34c12398e771c2eb1f5ae3fa3bf1. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZDA82538704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2c2cf569e0da3e3c422748b1220b30441be3476c9ae917c2888f4c5ca5dcf7. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZDA82538706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d995c5e7b1e84e156245fd8ba8e950cc9dc04732810beee56b67444dfdcd2fa. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWX2522612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52512d4fc758bd07836340abee22d19996030246f26e3023f57405205097b83. 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/QZWFJ2584606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e42e4930f9ef776f2d295b09599e649a1428f8b0a426375f2616353ffd845. 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/QZTBD2580176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3bd76fffd223d89d83cf01d29e44d437b868120aee177c8566782c5ad9610. 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/QZTBC2555380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224d453637778486bdb79105ce544824ed733d75f86b0ce67f5e753e456d9a50. 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/QZWFJ2584608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efe8cf9b80b929bfd8bb657d25565d90c73a50e3fb3a267871db35e8c18c2ff. 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/QZWFJ2584610.