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 0x1c23b5a04e3bac2ecf91a8b220da522845aff5f5aaf203ffc6b2ab3c05ee8b16. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81ccf466-c465-4200-bbd1-3e497a19f391.json and https://artists.proofprofile.net/proofs/artist/81ccf466-c465-4200-bbd1-3e497a19f391.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Radio Oorwoud Go! (feat. Stijn Cole & Hannelore Bedert)
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 0xfe9cfe9515ea8d1d639141f4308c78f125b8008983a1ca45801569a23408bbda. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BEO191200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ac6052a5648db3e649a6c8b6adb6210fafa4464766532d27bd5a2eb7fea15. 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/BEO191200002.
Je Tuin Is Een Jungle (feat. Pieter Embrechts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6020ae2425c871742299fc97bb81060d5a712da0bfb49b398c440aa3d7eec0. 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/BEO191200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13842249efe2fb0c21480d9628308270089500da9dbf668654c4e7009f93048a. 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/BEO191200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db4be162564f87d9d48cd3115f7c0124e2ff90b1bc3ee23eddb3f58821f3303. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/BEO191200008.
Morgen Is Het Te Laat (feat. Hannelore Bedert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2ca5125980a37e0915af750ad9b4d12f45e670ffda7f074f7c52fc453d2b2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BEO191200010.
Wie Waa Wee Woestijn (feat. Wannes Cappelle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0d93ecba49ed376691fb243aa4f6e4673ccf07ed8f4c6b3e41bd0d58622e78. 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/BEO191200012.
Aan De Congostroom (Bonobo!) [feat. Hannelore Bedert]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10816028941e907cbba49fd125f58f325e6f4a5abd316be54fe74ada097afbf3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEO191200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7445228a868a9dd4a76aaa99681fff769a42cbaa3df5c87de17e8212746d1235. 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/BEO191200015.
Waar Zijn De Seizoenen (feat. Nathalie Meskens, Hannelore Bedert & Tine Embrechts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714e736d69b263f78f5939a30c9e331f38f5d93c2addf5a9c909cd84620ad16. 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/BEO191200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b6cadb4b422c727d64261b533ca40f2f552df2dfa8cf09cb7f7db9f013f92c. 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/BEO191200018.
Met Z'n Allen Op Pad (feat. Stijn Cole, Wannes Cappelle & Nathalie Meskens)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0f5902e419642c21b42f7befd9485d679aeef0ef7fa3623146798fd6ebfd4e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BEO191200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33d5d4e49aca6fccbdac4b0e61f775af1f8cf17ba664fb38fddc427e30d5c51. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BEO191200022.
Jak Jak Jak (feat. Sean Dhondt & Veronique Leysen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3375695ca42871a90ba545a6d4ffb4564a86c24a743e3ed5570ab36bf82d10. 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/BEO191200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01c0b945c247c8b913dba7bdbca0105147a2403ec30646355d01183cda940a7. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BEO191200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d1ea99ab82de4837e3a9038cd50e8c31632ac6b5a04ad04c2e27f05d348208. 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/BEO191200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01feb1cb4316b2bfffff5b96c65384fb86e8b096579481221317b49790fb462. 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/BEO191500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe238151344da0068e4cebe4c62d40549bce9204f7fe1744265cdc075b2141636. 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/BEO191500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d02e0b3eb31740d1a80820fb85b39430f274c9ca97e5ce8d160a461f4ec04f4. 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/BEO191500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92d6276af953a83e5f1490a2a7976d13b6222dd19a0fa9c735ed47190d7d8ab. 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/BEO191500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f0f0e13870256041f17f0d9a0f6cd2d7df50186b49feb49feacd85b1d9886. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BEO191500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0def9d771762d360f0ed0fbe949c0fc6b11ada242e4219dbb344e285878aad2. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BEO191500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acdf878d635596ed4b63083a2abfbbd12928ae813a911e26e5e5671d9460e37. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEO191500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27241c60c1e575e794c95d7c2a47e9e1ca1ff9083784a100a139f3b6147cade3. 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/BEO191500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e23560731334464d63da4f01bbc2aa4815ef9bef7bf2bcc2e204dc3345f5ec. 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/BEO191500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2fa62d9b6f4775bc07284d75267a287b742779d247023165f2a80c5eb823ee. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BEO191500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23bd826024de98fa606f429a215bb10baec7b1267ddab9ab6df9d1530cbc1a7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BEO191500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b947daf0c56d4da30f1fd872f418d493dc7f1195dc6feac229a339c79c4634. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEO191500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47716ed2132fd6b1cb216e9e94f4a4f5a55036a72b00818ecd1f7cee0aa49532. 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/BEO191500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083539c04c2a9ce160492324a6bb75322a14dbc356d694b2c82d9495053b0e33. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BEO191500122.