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 0x346c7cf9df5f92be583c5ac56efecee890ebcd42cbbb47a858e9c815fdb02c42. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2686501d-d784-465d-a4c1-fb533c0ff43e.json and https://artists.proofprofile.net/proofs/artist/2686501d-d784-465d-a4c1-fb533c0ff43e.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 0x3fa187f52bfcdbb3b662828352f7ae3fcdb74dd975dd0db36c424f013932951e. 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/FIVDC8100122.
Kolmen sepän rumba ja 22 muuta laulua Helsingistä
Tähtisarja - 30 Suosikkia / Humppafestivaalit
Stadin kundi ja muita Helsinki-aiheisia lauluja
20 Suosikkia / Parhaat humpat 2 / Silmät kuin tumma yö
20 Suosikkia / Säveltäjä: Georg Malmstén
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc3ae91adc93c5bc92d9b25c02a47117b08d5464fd1d24cd54c09cda05749f. 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/FIFMF1228521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a292675d616ff59f93981c2efd683476f92c32c48dea52743cdbb316c279cc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FIFMF1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ed65fc9eaa2728630b25c30f9e0902b0c411a4d347c312090428f101051da. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FIWMA0500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842586dc539b6094f1262780247805019ac90268ee9c6e4888faba06303c261. 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/FIFMF1228191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee53b3e4b182ff92c2bee11d4472599c70d8d522fb9cae0103aa5198172a4c. 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/FIFMF1227957.
Sikermä: Matalan torpan balladi / Kaksi ystävää / Väliaikainen / Rovaniemen markkinoilla / Moukan tuuri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918414c8defb3ef73b7c18412d70ba0ab62f49bf4114971d8350d2642bfb416. 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/FIFMF1229460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c1dc0909a1341ec0bbe31151889f629a4435342fed0df53ca9c47226a1e12. 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/FIFMF1320930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe287ba55f175729feb647fec8aa25122b5ad0e074a6c978e0205ebf902733796. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIFMF1224053.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908a68b351df78dbed9d9ff11b9203abb0ac1768d2a81bd79b4eb7a3dbd4208. 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/FIFMF1237200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd516e5c7c4b489a15160da9689296dd735cfb6ce1e9cc00dd1e89d707399aa66. 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/FIFMF1237223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3587ab96a78218d6f502ce64d28c61c1cc02178f69c931be4ef532ae2bed68fe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FIWMA0500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a72ad9e9a9b0885354fedb245a4e645e1eef766ef31dcdc29b5fcc20af21a2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FIFMF1237127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b5d708b96460bee1e0a1a78bbc293762baf5b9b14a1562b8705c2e080df8d7. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/FIFMF1237174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917700d302a0c0a5035827651487035aa8938648f1be8bf654d2e32cad38027c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIFMF1237205.
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 0x12dca8f2b767c462e208931a4405c4b826eddd25d630d764181591fc67ac265f. 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/FIFMF1237176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffaa7f3537755216b8d73f4b1c5c380501d9b8effc15254c351ae66fe87b7a9. 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/FIFMF1200004.
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 0x237c46c0ee62d76b907e225f0baae86ab0d53ab60247859ecce0d3616faaad12. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FIFMF1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eca17ed5699172cf06eb30e498092fd3219a95f7a07948c2b98fe9e07e1a29. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FIFMF1237163.
(MM) Suuri suomalainen säveltäjämestari - Ralleja / Laulelmien Kärki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db150a7b4f564c2702479d46bb5a2eded2263c609973eb87b329bdd6276c97f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIFMF1223243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad70ef9a8acd7be0208eda37032e3390f8086ff87d3a8c586e41c42a0bb154d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIFMF1223245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c658cec2ac4efdffa2d12822dcc8d9b3a17a243c1e401252ba6adf2013a07. 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/FIFMF1231802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276116a36a20753c2040cc7d27a260b49cf1508532bc772d2b125b693d1a2fbc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FIFMF1231354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212b865b7e582ee6e5aa420ab19a2a9b4b4b1030fad295a34b15afa0575788e1. 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/FIBMB8000006.