Joke Bruijs (14 January 1952 – 16 September 2025) was a Dutch actress, singer and cabaret artist. She performed with big bands, recorded songs, and appeared in films and Dutch television. She was refe
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 0xaedee10c3a683c5a8666bd47e8ed58c59470667d72c83d1754db1a3dd256fc1f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6fa20dc-8adc-4264-b0ff-271fde83bcd7.json and https://artists.proofprofile.net/proofs/artist/a6fa20dc-8adc-4264-b0ff-271fde83bcd7.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 0xed56c24782bf03fdaf8f1131c7e3125851f850aba4fac17228de73e5f4411bbc. 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/NLUM72000372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfea37898d2f233b317fec713cac99a805d40133635fbc3b3037785e994fb7. 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/NLUM72000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa804bc76bd539dac1584ee751cc2bb0c8c048d10e228c6b778e95ee42ad34f05. 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/NLUM72000377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fcaba7b2919f6d8c293746fb4e1cc5c92b491ee8662167d8a437063a410e7. 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/NLF1T1600001.
Ik Heb Mijn Hart Op Katendrecht Verloren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7821debb6f3f52a42915744c71b02ae3d0f28d3be33ed29e65be27863499cf8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLF1T1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234e44b889afa8ddffbf27cfcacd436fc1c91b3aef3a328272d67fdc3fcf9707. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:09:33Z), 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/NLF1T1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28559aad9fa9afe21a758b3cca864e07c316198485a7a76bc3d031b4df58c269. 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/NLF1T1600016.
De Leukste Liedjes Uit - Toen Was Geluk Heel Gewoon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99020c19d0bd46fed9b9f9bdcc255efdca6f77e3b0adfab0e32d2fc99e6032f1. 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/NLS241500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36012a31505e4d8b32a057a17f206bab5cc97db51c694add46b59d23bef82893. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/NLL600500069.
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 0x8c0612ef1b070bd03e735a9cdead51c4486b402c1740ba5a59df5f97abf7f53d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLUM72000379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e67b9b88ea1c5b180edca89d39bdeb9909294c432222e57d4a240319f6134a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLF1T1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a63aec1f35463bc5d0ae423427dfffb6209a07dfdff58ebcc60341b01dc94f. 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/NLF1T1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9859cb46455d245a049df88dae8439f3f57db9b77149c896461b7f9fee06bbe2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLF1T1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b30c91ec6c5cd8469e309e953d26560209c7cd4fa5bda6344f4c7be8dc88a5. 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/NLF1T1600015.