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 0xca3b52126d8f1a97c125bef247672220e79fb83d7931415aeb8317f8011dcdbf. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86dff037-83b9-4010-8d84-3342fa8d39c9.json and https://artists.proofprofile.net/proofs/artist/86dff037-83b9-4010-8d84-3342fa8d39c9.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 0x832fb1e211340ac8871e2be48582894551273c01c1120491a8a0f32dea4e3225. 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/SEWOE1401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3430188469a03510b604864d9ef26add057ac8934ed145e8c970f64138e2d7c. 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/SEWOE1401103.
Torsten Hällde Brännvin I Ett Glas Till Karin Söder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264e978bc5ad4eccc07b67f524afb665ad9942892c80ce5724400643a7711b6. 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/SEWOE1401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911ba50d2f32129c748df08499c6902e02a46f51d1069888e343703a88d8e23d. 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/SEWOE1401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634fc89c55551c3241af6cc594a40e09590888203ed5eff3876fd81a7ac050a. 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/SEWOE1401111.
I Skuggan Av Korset (The Kristet Utseende)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267050adc30032099088137e3e93d113174c7b34de8db4ee7628d3ac6093fde3. 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/SEWOE1401112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e24ae41eca461dbbbc5efc1a00e3b357f260485127e5775fc9378351b154c9. 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/SEWOE1401101.
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 0x81a0d89b6ad9f3009342b1005b9069ca390f23fcc397bb2791c09fbb11257956. 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/SEWOE1401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60074a8e9576859681b0a6cd9d2ff26993c97b37d906070085c260788374d38a. 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/SEWOE1401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990190df2d09c858984abb08c9d3e037a903630dcb7f1dd6e45581160990a904. 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/SEWOE1401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd58bd64b9e53c0e5dd71043264810bf25d56de3cd8ab733973170582bb869bf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEWOE1100804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb38051572c10b48e47cb30aef7b8ff43335b31a3afb5793bcd13c46de2affe7. 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/SEWOE1100808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea066e2acb7a43a77f40d0b6a9976b68b2980e85cc7d49f9000f28f8f7cbbc0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEWOE1100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f5993ca727b2d172395bdc685f5833b8d0ddbe059773c3fa669cd0bdaf298a. 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/SEWOE1100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0d0a6201531e295f4df6c2bd6504c8ed7d6cea654c2afd8b85f7719898a508. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEWOE1100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5636dcba7d3e13c5a489bc2ade4b484ea7987a4fd466e574b93aa1fcc9629816. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEWOE1100802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168b49406c1463b13e99d634b3a3c3d9d6260a49ad797ecab9b1cacf1349915. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SEWOE1100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29320cecea65ba9e20a74edde61655e2737d69bc3452d54079327fa8da12f40c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SEWOE1100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef227b4a209daa99f5f50984e6adc0496f6635b62f63b647c35e4d742c1ffa50. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEWOE1100806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e145f66ce57a7d1f428096c1f61195166493796eb7c4dd97914fbf83e12c15. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SEWOE1100807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09d660ee3137970790edec4305a81128c2606aa0fad346e52d8a41c8bc4d4ed. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SEWOE1100811.
Reaktorn läck i Barsebäck - Himno a la banda (Extended Version)