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 0xc4abcf3aa6ee14c5c96dcf65606d5e7a474f92883af1adfaebaf8877d5844536. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c95417d9-c5e7-4ba5-b242-43d4a8b77eeb.json and https://artists.proofprofile.net/proofs/artist/c95417d9-c5e7-4ba5-b242-43d4a8b77eeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rakkauden jälkeen - Kaikki levytykset ja arkistojen aarteita Vol. 4
Rakkauden jälkeen - Kaikki levytykset ja arkistojen aarteita 1963 - 1988
Hunajainen - A Taste of Honey - 1965 versio
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 0x08e84f41febbebf7139a0212e58b2a92cf6c1fdd2633839a45d302da3d455faa. 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/FIFDP6500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ba422927b2b05732ee2deafc38dbabfb9279e3d25ff33e7a6dfd5b49bb2781. 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/FIFDP6602000.
Rakkauden jälkeen - Was Ich Dir Sagen Will
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eb8f5b9d58907e6f0b54662dfd17501e9011d73536697339305790804b5e59. 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/FIFSC6801000.
Nainen mä oon enkä pyhimys - Sono una donna, non sono una Santa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d76a082620e2bbb9a9875128eef61d9215d6ed61cd436e10fe4a348427b90f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIWMA0300228.
20 Suosikkia / Säveltäjä: Georg Malmstén
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 32
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908a68b351df78dbed9d9ff11b9203abb0ac1768d2a81bd79b4eb7a3dbd4208. 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/FIFMF1237200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd516e5c7c4b489a15160da9689296dd735cfb6ce1e9cc00dd1e89d707399aa66. 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/FIFMF1237223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b5d708b96460bee1e0a1a78bbc293762baf5b9b14a1562b8705c2e080df8d7. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:40:22Z), 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/FIFMF1237174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dca8f2b767c462e208931a4405c4b826eddd25d630d764181591fc67ac265f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:00:45Z), 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/FIFMF1237176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc8a8bd41142956f740d95f7e4ee5675f397bbe82adf3dcc4ab1fe9e450780. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FIFMF1237191.
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 0x17f304bb4fb64db90ec1ab07320b3cd7788d538e12da2f6118672566200b5ff3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FIFMF7800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fafdb9d4b7daf84baef9a776767227284522f43b9659712dafdf7e54e86bb2a. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/FIFMF1237135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212b865b7e582ee6e5aa420ab19a2a9b4b4b1030fad295a34b15afa0575788e1. 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/FIBMB8000006.
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4879fc23bae959ddbb2e0ca1f0afde23c70fba0110a6df2ee68206ac69bfd. 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/FIFMF1237216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e21a258df4e797ee1c54bb53384b5db862ef2e45351cd5e096f25b851eef40. 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/FIFMF1237209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458beec4251cbbc5a2d46d013472a5cf1b621e5ff39b052b4dcfd2242c1ec19d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIFMF1237194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfef695c4de3840cebd5e427a74954c2272c1f1becafc4c24fe731acaff0b4d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FIWMA0500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2debf0c301f43dfbbe85798229f6df0f6b95233db597c798dfcb6941a2ec3a22. 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/FIFMF1237274.
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 22
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 31
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 23
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 29