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 0x9fa735c543c6d595d01f698dc8ca7c39d0203051510eb8bb534f987909fc05d8. 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/017f08b6-ea01-4fad-8b6a-057668bbf77b.json and https://artists.proofprofile.net/proofs/artist/017f08b6-ea01-4fad-8b6a-057668bbf77b.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 0xc28ea6c2cb39145e8089ad038f88ffdb02067293f3f987a33adc77913625d100. 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/FIUM71301316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c2033b0e314d7d93b882ecac3fe0d8570f6e8728f144c6949663673248d23. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIUM71301309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4be81b92072e502decc441c8e928f94a403f46dd31e3b453a62bb2df47ca96. 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/FIUM71301046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726312d361ab939a84b548db8700787fb9ccb00c8537757f6479fba18ccf0f8a. 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/FIUM71500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da24ae0dc52c0c2949247cf52a4ce4d708bf54ab15a079c82b29af88b159ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FIUM71500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7879a9c2ac2a383dd2a5a76f75b083ebbecc58ab7bf70b376ff352aea91132cf. 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/FIUM71500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa047d01772c043fa224849c0d45915fa9674032d50069f27277a6e56ce7fc89e. 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/FIUM71500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a5cadbfdbf069596a853ff2e5d597ca04394e424b2b438e5bd3eb87783163b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FIUM71500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda6f735ce14a0c0c53e5e2a97316e9321801010ddd65d997ed4d31335c9726. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FIUM71500125.
Kellot Kappelin (TV-ohjelmasta SuomiLOVE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1562e65bdb29e3e5349c3d2b99b449d6b1ff7d92e1cb4a1c93fc2fa778f4e84a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FITFR1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a3fdd9b42375d2838e8ff724197951d56057f3dbd54eb5e40ffd2104e5f4b. 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/FITFR1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cf1b615e1310c55c0ac1794f4c778b64340d3c947e7c6a8723708bb460225d. 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/FITFR1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e37030d0cac951394daddfa843cb11d88471394af97e896c23b7315ec63f9c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FITFR1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45668f05b592e84a1c030cc76c8917d6ea38c2b883cee096376540196474bc6d. 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/FIFR52000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536d75f6744a0b495ce0d8601728a25e2df515f71cf9ddd387ee7c734744f026. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIFR52000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31145e33ff35b730c9ed22b5d974167cc6effd6e7f056ec10e8444a3a89c02c7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FIFR52300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edb6391f6883556e2fd535fb8b3ce3fe182db3b280acbb2763a22d4e10c9270. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FIFR52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31145e33ff35b730c9ed22b5d974167cc6effd6e7f056ec10e8444a3a89c02c7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FIFR52300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d155a87eb42a162d643b986a777e01ccf67f35246cac649c9f561b05fb1113. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FIFR52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d3670a6ae8965906d1c0e56ddd0f4c9edd1f4e25426a1ba21df6e7987a520. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FIFR52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bb1a4669814157b2c1d88865a39ec3704c285a2fe94e4d66de7e410bfca361. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/FIFR52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea5b3b36c91c11ea4ac4c23b1150bd7204a5c04af50f38b1675935d667f8a55. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FIFR52300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137f77b985ff2c5ac15877be14b1ae0b6f406380a74720893b9f9c92bc94e1a. 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/FIBAR1501131.