Ian Van Dahl is a Belgian vocal trance and Eurodance music project created by Christophe Chantzis and Erik Vanspauwen, with first singer Martine Theeuwen (aka Marsha), who also co-wrote and sang the s
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 0x3c6bff619eb4d2eae165bf86cf1d1fc13ba999b53c56a119f86e1d57cf0d1271. 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/45519387-098e-4260-871c-b1c6714df77a.json and https://artists.proofprofile.net/proofs/artist/45519387-098e-4260-871c-b1c6714df77a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Castles in the Sky - De Donatis Radio Edit
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 0x5e8d4fdf2040876cf4100b4bae44d68e644a09a84ad0ae18c83479f213595e38. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUCE00601238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d131caa66668f7102e03bc3133df46c62da48007c110941640a6df6e3be9e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:58Z), 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/AUCE00601242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2510456dece2b04a1aa096c4b5df7f99464d66085b72ef0b9644a53e49758c. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/AUXN21711052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bed060f99bc747786f94ad99da122d792dbb9b5190511bf0cc2f4d34e1f157. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:13Z), 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/AUXN21711053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c872f156ac66586ec750d8d9673815ca3f40a4c72aaf12bbecc4a9598196e90. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/BEZ460300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f527c2a4383f48f4b45ef8567aadd6ff7056720d5b068574ac4c5b057b7e14a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BEZ460300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aa74bdf6701f18a63a0cdedd064730b5a2115ce727801daa837ce3c125fd28. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BEZ460400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac199e447c7015507711fecedb84818297a355301964d26b38994b19f442caf0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BEZ460400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96c032c6d2d8df817559d549c0c90cd297c8793e850aa8a5784696b8c52c86. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BEZ460400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adca31721c0af19c1d1df1de0bf9e4c8cc9aaf35d9da188b611e3131a552274. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BEZ460300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ce46e50161ab9f7efa74f88859a466e3360f6a1cf56dd452d3f7afc13b7372. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BEF521800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad13db30c5a9537cef962e0d6af3170c7b90f2a498ffd4f7e537c43140dffc1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BEF521800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83af83b43d2c694befa0260389c6f975925fa8c3710b1b105638a0688fa4a64f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BEF521800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546175b2aab733e5bfa4cbcfadeba50efb803b666efc76b7ec324ae29d0cf2b6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BEZ460500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab786ae1bb94c1d81424b954a19f2d01fc21fcaf8bad8b95fa204751f5a9073. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BEZ460600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327a3d7d0f29a4155d6f69024afabc039b07d9f38c579183ad1f9710f14d7f7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BEF521200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b040730f1062ed47a2472efde530cbea791fa6f955bec53216bf039efb1b2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BEZ460100076.
Castles In The Sky - Peter Luts Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619e83f0a600f328d174e7c60c6680a206a9384ac50034f1f5dd0b1e65962e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEZ460000132.
Castles In The Sky - De Donatis Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd572cdea4d68ce2e7b0249ce426aac94d5565aa395afd823a0f0cf3aee19b0b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEZ460000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc0a48feab79def78e6991b8b430f5b9dda6409509a2092bf12ae8df986370. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEZ460000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5344764e36cfd13eb0d4dd974013058482d7b00e67c6d57d099b4dee32b1769. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEZ460000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b299eea319c10e9acf16fd317e96c530a0647f6b91b4f7c50067ca80433205. 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/BEZ460000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4dd5eb2418af2a2c6901df48e4973ad1b40e4ff778a54d6748174eae78e602. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEZ460000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d4df7d12ee8d6f9704fdd36c3afb5c8faa9fccc259dc46c47c676b5dbded0b. 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/BEZ460000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4338c9ecc1699fa18fe8c2c42fcfc72d558e81ecac027f25363a1c4d786b5b83. 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/BEZ460000010.
Castles In The Sky - Perfect Sphere Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630193948a1952cdb010784f43cbf17045c54717cdb65cd3d19351fbccb4e1db. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEZ460000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b040730f1062ed47a2472efde530cbea791fa6f955bec53216bf039efb1b2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BEZ460100076.