Rita Reys (born Maria Everdina Reijs; 21 December 1924 – 28 July 2013) was a jazz singer from the Netherlands. She was promoted as "Europe's First Lady of Jazz". thumb|300px|right|Rita Reys & Trijntj
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 0x0868a163e169a01d3f0f3867ac26f001a1adf014a6a5e7d5c9f7c9b6734db525. 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/3f2f9de2-bed8-4c2b-860a-335718f50377.json and https://artists.proofprofile.net/proofs/artist/3f2f9de2-bed8-4c2b-860a-335718f50377.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
At The Golden Circle Club, Stockholm (Live)
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 0x6443555242a9df9aeccd6d49a3905a43f63029ee182da09959a90986e888d063. 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/NLA306400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f91604acb08456d585e6c4c2a26fb7a0eaec35df433de03c0d4453be0cfef7. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/NLA305900023.
Rita Reys Sings The George Gershwin Songbook
Once Upon a Summertime (La Valse Des Lilas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb45930c5f350a9169a1ba62502058250ab24ead1859af831b4dea67239072c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLD017602007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098f503a2ef00d1fc38b9a8af9194dcc3cc20284df7c1e783fbc315d265cc645. 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/NLD017602008.
What Are You Doing the Rest of Your Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a62784c2cee08b54ff0bee4573ce720421b0ed9cb9889b9c51c2157f5e4326. 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/NLD017602009.
I Will Wait For You (Les Parapluies De Cherbourg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fbc016832e5d74076f5dfe8316f39bf05c55e0c9adf323333d30e3202f5d07. 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/NLD017624003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3a794c7ac805593a2946f710cb41291000a0478677672b84b5f803a61ef72b. 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/NLD017620001.
Where Is the Love (Sur Les Quais) - From The Motion Picture "The Umbrellas Of Cherbourg"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ac5972f139c4009dc757b29a81224f5d14808759ad7215b20720abc7b2c76. 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/NLD017624002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de54e842a5193b13672c9dcf92301d6a44938c457cb5efa642bd8d4a556d2f7. 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/NLD017602010.
The Years of My Youth (Comme Elle Est Longue À Mourir Ma Jeunesse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f355b9210274408c6ae2dda0731f2e0fee6532c4e09a3a4e208dce26400d88. 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/NLD017624001.
The Windmills of Your Mind (Les Moulins De Mon Coeur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a2969399b7bb67b2955417f1b7704b2fff02261c1542c08d21060b91b1826. 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/NLD017602012.
Pieces of Dreams - From The UA Motion Picture "Pieces Of Dreams"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfdfc31f40c47c671d2960cbf2bdb54e7024ebe43290cfcd85d9e4098ec448b. 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/NLD017602013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29123010e7757fa9dc11c894077f33564939460a00a6991ae620e9fd8c62b3aa. 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/DK5C50123409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811c023029e16daf587088687d9a058004a574e66c602dd6a1217ae1b6308288. 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/DK5C50123411.
Beautiful Love (A Tribute To Pim Jacobs)
The Gold Series - The American Songbook, Vol. 2
The Gold Series - The American Songbook, Vol. 1
Rita Reys: The Cool Voice of Rita Reys, Vol. 1 & Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7590e08e4ee4a43519fc81a7ab2f823c8b0d3226682f1cf6b5547a68c067995. 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/QM4TW1524152.
Jazz Pictures at an Exhibition / Marriage in Modern Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f95c221365349cec1005f29860aa830d270590cf85c658085be3131cdc1d1. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/NLD017302062.
Rita Reys At The Golden Circle Club, Stockholm
Valentines Again with Rita Reys - Featuring "It's A Lovely Way To Spend An Evening"