The Oyat () is a river in Babayevsky District of Vologda Oblast and Podporozhsky and Lodeynopolsky Districts of Leningrad Oblast of Russia, a major left tributary of the Svir (Lake Ladoga basin). The
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76224ff35d1f326df0da94cc6425b8baa815338ea64f3c9f05c679da7c26e59d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcd99583-a20e-4a71-a072-cd39b05e2f79.json and https://artists.proofprofile.net/proofs/artist/dcd99583-a20e-4a71-a072-cd39b05e2f79.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62fca055dcf52bfa576ae83e7b6a0d6012a2628436d1e5e6194f4e6a4c65bd1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPJ901423530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc6b8746d16ddce31051c6879ef6f128cd9e10bf167cd2fb531f87251113791. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:40:59Z), 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/JPJ901423570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a9c45ca133be5d530864a308353485724658ca556526f4f961fde151eefd5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPJ901600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126b45cc30562e830fa5c5605cdd6a495dfbdcce548f87c29c26fbe9e7557ce1. 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/JPJ901706610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88894908b4a0e247c862e9166f03da7cd967013a859f8df6dcdc055cfb3cf03. 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/JPJ901706630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df38b69ef4958f2dd9dd1736446de96b5210ffb243ca57d878a67b20176ef97. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/JPJ901810470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2150434fbcebcbcca0f8f55bcae34fb33856cde80710a5c69dba0914c1f00a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPJ901810480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65875f968183390fe7a11a03bd47d8fbedb3dd2c9d64cc0ac76fc3b51940b7b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPJ901810500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0209ca118aab6debd39af92f46da591f9ec46828738857a07b615a3ff0e190ce. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPJ901817690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837dd700be4ffa7ceff7ae31c1566a4482023255bb44f8e78fd0279325a3423b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:34:22Z), 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/JPJ901909790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ec7f540211822f52a67f4846da921f4b74ce5de49af046a85c2c16d5c8e334. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPJ901909800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f59cb083a6666d2e89eaa99ab61a25cc7e2665ac0b08f321bd9a44733750a6f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPJ901909820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac629d260af5b19cdd37603e89dc6b74c4e2a7299ead48f27cbb3ed6d6f2bf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPJ901909860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dbb6d9b8667795568766454ee7291505ab4d836619b6a46039bd07603bb987. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPJ902302260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebc5ca7cb5c7240df03896a6b4a0c90b74de78c6410549f969e6dbf95513287. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPJ902302270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eecb2d15f42d6786caf6385f0fbce7ce887b1da199b3ba108e79265eacb315. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/JPJ902302290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2febc8a2812a2e7265813f905be743059622c3dfd3a663904298b4cf427f6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPJ902302330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb4be32971604132a3f2d698224d802480a8677bcf6ba889bcf8775283f0e9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92L2421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7edd6286fac9f9d231da7be0a763aeeb099050865e7ef8d7ef688e873ec604. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR232201257.