Perila is a village in Raasiku Parish, Harju County in northern Estonia. Composer and choir conductor Gustav Ernesaks (1908–1993) was born in Perila. References Category:Villages in Harju County Ca
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 0xec66bcb84f0c1c7f0bd8dd1118f321bd986e7ebcd7feb647b00f175a4f82662a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cddda2ba-fc51-4de5-88f4-98e23c3f4634.json and https://artists.proofprofile.net/proofs/artist/cddda2ba-fc51-4de5-88f4-98e23c3f4634.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Long Dizzying Air Through A Balcony Door
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 0xa6c3b550974c586c498352adbb9c4374ca3be8fbcc98f1a8ef55c666f5291cc8. 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/DEX262100808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd68c7698fd62ac49d482034cca1c3e39a13c08a0de0e2da06a088a4f341d1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEX262100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2367850b8c1b5cec09015b96ea09639e3d808ef38ed1d0e7cd533423e56bb6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEX262100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef36194e7b67e6245ec8c0d187bbbb9d55e532d7d46ededdf97a91e921f185. 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/DEX262100813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c3a0b31d1c1c64561c31c5b3123af9fb25b4bc79c2d02520f15239ddc5c312. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:13Z), 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/DEX262100812.
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 0x6ef1d900597a4e0a691b12361ba17e07cf548bc7be62e2dd48df349c3c435b82. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEX262100811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9917792b39f516bb9b12436ddff93be24f4ee3b657f5c3957cc1f5da5ce96cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOSTS2183010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2951de624635d80a2a0a57bd8b8662599871a9cbb7900a13270c460b8cc997. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:31Z), 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/NOSTS2183030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba54f442ecd52952b1f318ca815d14ea29fc5a81e8c96acfa4c4362a85dbbe. 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/NOSTS2183060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4bdd03c9047d66f79ba88b05b715e17c84145fb283980554afa705fa068f3f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOSTS2183080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bcec91f82e5ace6491202cfe4044d64179987e965a62479d85e13945d3be58. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOSTS2183090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491ea89e5f4933060c99bb0558de39d2629fd730d9ddd1eef5b9091a54a06e02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOSTS2183100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf09791b70997578c8d9a1549949a4d588b6e5f848d3bc71ff1eec0fb3772b12. 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/NOSTS2183110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deddc16364aaeb15092a984dea7e6caec561450b9d94680741ae3104da70c3d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NOSTS2183050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05672e32484ee48648b4d34c895b918759668245c8ffea34fcd1bd06536d3f5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NOSTS2183020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbfdafebd6f1fc62542bee8c6fcc8c5a25822f716f23441703559b2fe3c6722. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/NOSTS2183040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1fc6918894d9580f163c420f4abb5541e1ea546457a8cfd51d0ab2b4001b9b. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/NOSTS2183070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984908e7746b279285c07f0df6e17138ba0e85427b58d46c56f6fc6e01da7086. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK8261900673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c447033190a68b132ce8149b945971e92a34e8c3563a02f995c08dff47ff7ee. 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/UK8261900678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254261bbb3320e5a3e3cfbef9b5e825f8352dcc2cc5a545fcea1306703e7b8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK8261900680.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ef38d642ea826c7f097cd60e750bb8a62094d4ce2534914d6950695d56d75d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK8261900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec5921879e2dad250b427f297cadeea59c5b9d656b2843b3cde7852fccbb11. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UK8261900682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc540441034ccca740accf453640f95504c3f368c5ea38a5de040dc32f547939. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/UK8261900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440c9f881b90248308f45f1e6f19d2d48ac7793725d534a37bb20b00e8d5805f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/UK8261900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1b236288f91879ae68d2527267b4da6f4e5afd51e9ecf306e691d12dac66b4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UK8261900676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725a6d4acfe2777908c6512e496ba80f4d419876c1586d73dca107c6f2cc0261. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK8261900677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29055c1c328136fefddcb73c5b838f3ea9a981c980b54bc2598955bd8636bf33. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/UK8261900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783354a44a2f50f8f128656e41d17971572592ab5ec2017a433bf99d27142ce6. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/UK8261900684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fabf7db2c42a10ac77f1718cad203692228e1146528da2264b97482592f4fa. 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/DEX262100825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e0b457b33922924736866db646315f06d90ca2a8b1527a6d8a28d9960c93a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEX262100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fd10d862594427bd202c8e061cd8efe42628ca441dcdae75803aa65051a6d1. 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/DEX262100827.