Rapalje is a Dutch Celtic folk band which performs Irish, Scottish and Dutch folk music and sings in English as well as in Dutch. The band consists of William van der Laan, David Myles, and Marcel "Ma
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 0x1c08475b7ff160d743f30a954d129ea273131e9601d92994803c87e2d42c8f4c. 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/352c1a7b-d353-4600-ab0e-a8887bb945be.json and https://artists.proofprofile.net/proofs/artist/352c1a7b-d353-4600-ab0e-a8887bb945be.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 0xd4a08397d5289a8d7af3874fb97204ab92354ad2bb3be6c13e2c52ea322ac1e1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USTCC1066094.
The Drunken Sailor - De Beschonken Schipper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e0f032c09a44a37085bf14d052477422648f33f5488c307ca7b5261f0fa9e8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USTCC1066865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7094b7db8f893e6342e73a7d585b7edd1fa1e89e609fcef01f3eff2eaeea00. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USTCC1097933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3058f1028b3219a10ac78b78fbcddd8d40859961523805d477fc6dcd07754093. 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/USTCC1097950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584542357b5f73acb785479d00ddab14bb7b0cd24dd4d15e7c879672fc095b4d. 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/USTCF1033610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e6859c536d508a6249d653d9937d5704db9217d421639c2f94f1331d8292e0. 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/USTCF1033660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbb413f940ec3c283d29829933815a4cbaed973507a686271a71a19b6665f1e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAAR1092976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b813008e1f5b6f5241a42f10d7ff287e7461120b1a19a6ff35c617acbf8908. 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/TCAAS1010519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff12fe947ca9e7adbb80ed627e1ce5ae165b61c80b24e3e303120d74bffcf5. 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/TCAAS1010542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23324dc84e4effa117fbff38767788f65ae16ec2a3ff31eaf0d10120e45fd818. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAAS1062104.
Jan De Mulder - Zeemanshorlepiep - Blauw Garen En Koperdraad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c8cc6b991b39d09ebfaea97584136ab3240f4d0a14cbe8f861b509f5f0a4e1. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCAAS1062113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822718db1683ccff10fe961007d4f3d3e9868d75d2af7831611c0eb5a2f2acfc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLUE31200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c85da02e00e00fca10d3bc7eb903c542ba948b367c3b36aa8d0c83a90c02b9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLUE31200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b5657fd18968d2f44b556d08b687ee9488e5be2c27dc8f6ed9033a3dc326b. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), 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/NLUE31200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a68c78a7a281b0642cb807c3f42ad2a13610f7e87b3c430c1aeb000aec36c4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/NLUE31200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36dbb6174a3386978d8172b46802b6fc4f4cd0c1349e44aa3316c31aaaa35a. 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/CH6542143170.