Erki may refer to: Estonian Academy of Arts (Eesti Riiklik Kunstiinstituut) Erki (given name), Estonian male given name an alternative spelling of Irkay, Lebanon
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 0xc6fabfd15fd5310f4de4299b58e8c1279eb99ae98eb393da4199e61e57a26081. 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/27fd7d9e-250d-41db-a5e0-3fbfb7219a28.json and https://artists.proofprofile.net/proofs/artist/27fd7d9e-250d-41db-a5e0-3fbfb7219a28.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 0xaa4658bae954827cf9639d0ebb2cf7cbdd842489ca6c660bb774b28da54a5b1d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN52447617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe327b0d1235c89082cff618f7dfe0c6fc7f54b9e6dda781e246eb1b2867aa6de. 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/QZPLS2433699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f74ae73aa848ad517aa6b3ee993af0608f55f0c7c7436d66de3970b8f8e8ba. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZPLS2433705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ff075e5441541fc9371db22d87e22f89d6a9e21708cccba1b117f05f1ac34. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:13Z), 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/QZTB92472912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f970d1818dc56fdb698ad51f427319b65de9a4c76904c4b7f3864d3a4a927. 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/QZFYZ2586437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3b5722533657dba5d9f09b4665a8a13d6aab6699023f853105260137e9beca. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZDA72596117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4debf9c781edb7fae3f575541b0936b78c6fca50d9857807801e003c85a913f3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:09:37Z), 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/QZFYY2516695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d1dce1e877814f8dc50bf04e6e4d0b84d83277ab0ab204788d0c5cbedd6f3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA72543956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1473e25411b9544da219cf44a6b4dd8a32ad5dbca6276b2920f03a1bc401f7fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6H2545452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef75f80abe64df160ab02d231bff3e228c744f75a74d9f3d346ebfa2bec3cc3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6H2545453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61917965e7fa116a715ea237bddc5e7aea15ddc76b950b7e8794dbdfff8ab70b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6H2545454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeb4b0441bba71fcb57f9750f83b53faf261e063ad71f70af1ec4ab05046ac5. 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/QZTB42579871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d35a72b29c1eb9572c2cb55a8465e7872c6c6669867e3d942a92693eaa4091. 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/QZZ7L2509965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ba862751777eee5656230dbb49245b5b4f15305a94bf84062318a99dcddf76. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:06Z), 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/QZZ792526502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997780880f7ee6bb59b75b555f94fa63de84127b81bd2f116e7c6e51c1f9e376. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:01:13Z), 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/QT3EX2513284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080ed9f16cca46eb01460e4a8b1c427654819807a6e3078b790f3e4d8a3a9c4f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3EX2513287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc51748c5ae456e29c42b86ffd9e758daa1358d1d3de8af7ec95d96bd1fe94f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3EX2513289.