The Kalevala () is a 19th-century compilation of epic poetry, compiled by Elias Lönnrot from Finnish, Karelian and Ingrian folklore and mythology,Kallio, Petri. Muinaiskarjalan uralilainen tausta (201
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 0x4bb1ee7f50bdad2a413157d2ce73e23be2b46bcbba6dfbf3a511062814a57b7a. 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/90de482c-4d8c-4f1d-9f21-b76b7b8fbd0c.json and https://artists.proofprofile.net/proofs/artist/90de482c-4d8c-4f1d-9f21-b76b7b8fbd0c.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 0xa51927892550176285434c8a484dcca22cf4508c1872592d4647573f457816e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UAMU11404793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b7f6a9b78b2e41ccfc0fc5ba5d7cfe2a2f0ac0d036f83c39d117999b49e5a8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UAMU11404802.
Осень в стиле фолк (Акустический концерт)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d758b0ea3dd9ad85618142293fd8c6c2d4d6d4efd7a682760df2f871e5fe1aa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:14Z), 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/UAMU11404844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa611c220cd260ad06f7eaa95e6537bc693699c64494f95218621b69c799f426f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UAMU11404854.
Волчий зов (Гимн фестиваля "Folk Summer Fest")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304379c6284805a8ebfe3d60cdabdb81cc74d302b1cdcc96a2f0f16f7993b605. 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/UAMU11715210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795d8f5a9df4804ec42d95479fcc3dd637e9fdfe42a5007e097263abe9fb2e67. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/UMA202994314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc35d4118d10cdde81ced53084a9388bdada528d8504eeed381b275d02e92e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:01:06Z), 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/RUA1D2510207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb5bd1c816933f1c7f14e73ad18d1d2b42998759b437b8958b5ef2e1e32f1f7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/RUA1D2511303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170e6e39a51bac71251f6aafdd5a0869ebbe8079525e097e5c14f2f883e26d9c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/RUA1D2538607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d461c1d7f9ed53d11a84a4077264f218f3c1a9dc1e25a6a11a7b5f7c478a72b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2538608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a06f246eb6a017ae522e0b6ac000f9ba6a3126c9f1519a3003b7412d072896. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1D2538610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636f4e97cabe477ab717ab17dc904c9494993d81d259a0e0f3ae1b36a1097123. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1D2538611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c87d17b629e2252df20489f5c991f989492ce07e0ef7bb34a7fffb2326dd9c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA1D2538613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd7ea3f704a7e59beef5de483170e7129f1b860053a41cd0fae65675e983b5a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA1D2538614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6368f3b9214e4769ad10f73e298b4c879b94c50a436e91f16da64d52dfed388. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/RUA1D2538618.