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 0x10c9bf3f71809b915a7eeed51a07347175842d59e023f92d5a2b2057b12021f4. 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/a2c006e1-6c15-4efc-9f01-684fac0e1f67.json and https://artists.proofprofile.net/proofs/artist/a2c006e1-6c15-4efc-9f01-684fac0e1f67.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 0xa4bace939a32c5cf03a36e5a00c36bbcb8d640f0886ef0d356be02e43198b5c1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FIBAR9900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ae4400529a34720b7e7caea534dfad5f012a127fe3173a948ccfb00ae10ac. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FIBAR9900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79378d91bca40dd3a3074b67b522bc10f9caa54e26bcfcc194f7e72f9f3be753. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FIBAR9900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3322dd794201acd5e4d16dc3e4d6cb339b1b883e1b2646b2895c594e175687. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FIBAR0000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbcad83de0891f49b5fe6ac74a755338c7c692bc76a4827778e1e83b9463b7. 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/FIBAR0000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5173ec8a2d07ec80298d5b500b40d7678d4ec287ca576bed2cf7de2a7ed9f3. 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/FIBAR0000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93764f54f7f0391060e2508072388fc16c44c954176a8d0a4a739e00bcc591b. 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/FIBAR0100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2005f6379dfda4eff320c1170096c700abc37f89dc24c82a7c2ac4150b3b47. 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/FIBAR0300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6283ced0106a2482b7f919724db05917e90cc0f676d0d3a72f09d9d6964800cf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FIBMB9800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a045cff2011876c4cf142cf766a82018c1ba2770a89ae8191d4c3b09e618955. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FIBMB9800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f838804ec0a8d55e0c1b916054edaf5c7f7c3eab01a7b63ee5663d5c6d6a0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FIBAR9900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd134c0a33b540f7b8ea38887be24382a242d40cebb7f9d18fc52c65c875617. 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/FIBAR0000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbcad83de0891f49b5fe6ac74a755338c7c692bc76a4827778e1e83b9463b7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FIBAR0000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e93aec47d99423adf28da4a796f143bd151962c9957908a626383f65ef14c7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FIBAR0100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef428b66d89cb4c98ca91ec3f14061142201bb73f860e4a2fa0d60a8c31765d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FIBAR1200041.
Tulvii Pohjanmaa: Juhlajulkaisu 20 vuotta
Tulvii Pohjanmaa - Juhlajulkaisu 20 vuotta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a213ff673e0cb98fe5ac5eb0f21014ca433ec91496d164520d0c5177df7be. 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/FIHC82300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858f14494def4cb706c57d4ca620a25a335fa47e7df90700660e1a50e45d368c. 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/FIFEK2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb465e7a6076a5fe221da2f3e5b321185d7d9ebae40ce5964e6a0fcf448b2e44. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FIMGM2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e1d18b2eb8dc851941075b4a8f91879936cdadbcd54c10a9e8626049b4896d. 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/FIBAR9900232.
Lavatanssit - 40 Suosituinta tanssi-iskelmää
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd134c0a33b540f7b8ea38887be24382a242d40cebb7f9d18fc52c65c875617. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIBAR0000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ab82352d2eeaecfbd3b169ed4d52faecbf2005b24da0243ce8253733f1bad2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIBAR0000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5173ec8a2d07ec80298d5b500b40d7678d4ec287ca576bed2cf7de2a7ed9f3. 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/FIBAR0000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffea0c6008d368f5a1f91a9f4fd44bf6d7e76a4b66e0c95c5ddd19735c798f6. 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/FIBAR0200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325a52a28a3ceadbb56babaa0f0ccaca3ceba6f17fef15233f22f9eac21045fb. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FIBAR0200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cf8741028ccaa51e64b799ec1a2f29ba1c4b05468e883e158c19cb114efdfa. 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/FITVD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dfbd4420915f62997c370eb262692976adfcbafdcf9720170fb5682b2690d4. 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/FIBAR9900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d91c49974e4b9d445566c1dedf518c86ed185b5107264309ada16e91da523. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FIBAR0200246.