thumb|Presentation of the album Miami Nightmare. Left to right: Zangeres Zonder Naam, , Pia Beck, , Henk Krol & Robert Long (1980) Maria "Mary" Servaes-Beij (; ; 5 August 1919 – 23 October 1998), perf
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 0xd2a014b6a3b5ad0af8fdef2d9908650c322c9b5ce93296b44a414e9416f25d5d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0be18b3-054d-42bc-9fb5-6d586f03ef33.json and https://artists.proofprofile.net/proofs/artist/e0be18b3-054d-42bc-9fb5-6d586f03ef33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Achter in 't Stille Klooster / Witte Rozen
Bloemen aan Moeder / Moeder, We Zijn Zo Gelukkig
Achter Tralies en Muren / Moeder, Laat Je Hart Toch Spreken
De Schooier en Z'n Hond / Moeder, Ik Kan Je Niet Missen
Ik Blijf Op Je Wachten / Bij de Poort van de School
Het Lied van het Pierement / Mijn Pappie Is Enkel 'n Foto
Het Broekje van Jantje / Vader, Kom Thuis
Hij Was Maar 'n Neger / Het Kerstkindje Wilden Ze Zien
Witte Rozen Uit Athene / Kom Terug, Jongenlief
Jongens van Achttien Jaar / Nooit Geen Oorlog Meer!
Bedankt Lieve Ouders / In een Gouden Koets
Als Ik Je Zon Niet Kan Wezen ... / Waarom Wou Jij Van Mij Noch Van M'n Liefde Weten
Zilverdraden Tussen 't Goud / Ik Heb Eerbied Voor Jouw Grijze Haren!
Mag Ik Van U 'n Lift, Meneer? / Het Stiefkind
's Nachts op de Donkere Boulevard / De Meid van de Straat
's Nachts op de Donkere Boulevard / Ja, Ik Weet
De Soldatenmoeder / Huil Niet Mevrouw Humphrey
Waarom Loopt Men Altijd Mijn Deur Voorbij / Wat Ben Je Toch Rijk in Je Leven
Heintje, M'n Kleintje / Maar Zij Die Achterbleven
Karel en Leida / Brief van 'n Straatmadelief
Ach Vaderlief, Toe Drink Niet Meer / Jaloezie
Eduard en Helena / Het Broekje van Jantje
Mag Ik Van U 'n Lift, Meneer / Jongens van 18 Jaar
Achter in 't Stille Klooster / Hou Moed, Lieve Pappie
Kom, Zwarte Zigeuner / M'n Pappie is Enkel 'n Foto
Zeehondenbabies / Op 't Duin Zat 'n Knaapje Te Wenen
Achter Tralies en Muren / Aan de Muur van het Oude Kerkhof
Moeder, Weet Je Wat Ik Droomde / De Vuile Hond
't Was aan de Costa del Sol / Kleine Herdersjongen
Ach Moeder Laat Mij Leven / En Ze Lachte...
Hoor Ik Die Spaanse Gitaren / Zonder Zon
Als de Witte Rozen Bloeien Gaan / Toch Heeft Ze Haar Kinderen Lief
Kerstmis Met De Zangeres Zonder Naam En Jerry Bey
De Zangeres Zonder Naam Zingt Edith Piaf Successen
30 Juweeltjes Uit 45 Jaar (Expanded Edition)
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 0xe655adf3587865825e99ddc9d1e06b67c4ac8346742e4570c1d88b1d21e10d00. 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/NLA349700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd3c1eaf2e57665d5d41729b841e72c0318c89d86c941ebf55e8d2cbb24dea9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:41Z), 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/NLA349700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b18438b453d7d277280a0c76a2763303c06ddd679800bbf89521356d419c4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLA349700329.
Bijna 2000 Jaar Geleden (Remastered 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52aa484b1ab555795eb414d4ca6ffe1f64ee10fc2aa4d5df3362920b3ea59f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:21Z), 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/NLA306100039.
De Allermooiste Liedjes van Edith Piaf en uit 'De Twee Wezen'
De Allermooiste Levensliedjes Aller Tijden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9c591b8a39be464dd82c2b50a983fdf9c464a01bd6cb6e54e44191477bbf6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLAX70913531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5fb3528bfc84229e94011a746216bf3ddd12216ef909425f5953cd5d7072c. 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/NLAX70913554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1a6bf4ab37d0d32bfd7325876fda7f33550e90af835c9cab0bfcd3305b1b18. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLAX70913399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90507fed0cc9f82a464d9b074ac8b8bb491a0187172d696bafb86805dfd37cd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NLAX70913412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb205a73eebc9352dff2119efe8f96d6a2a46246b864c81c75c1718e5fa7cb035. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLAX70913471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c770a6433d1202d04c335cfadc1a0a9d163e3de192abed0f6c0901b8d16429. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLA270800308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48645a309607d264bdec73c7c33b2ab8f783e7bcc7327cc405655163872719c9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NLA270800309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b251d028155519de8746a01ba3eca30302825fef4bcbbe9c872ea19c78c26. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:53:48Z), 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/NLA270800316.
Het Beste van de Zangeres Zonder Naam, Nr. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6395c3f0d5eeb76d972e38928eaa3ad5a2e3700e7ef32fe0e2694d8204da8c7. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/NLA349700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e57089784e8faaa7fb24a7e16a2f6d2292878393dfc65b3f49b0ccab4b7f52. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLA349700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8974a7fc5ac87e09f80749ae79da8da6a03bd92d9e82be9df2dd5863912bee76. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:40Z), 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/NLAX70921668.
Het Beste van de Zangeres Zonder Naam, Nr. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3b70df99687041811def4223c4e08415af66de06ad8d07a1f49ef226b04c60. 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/NLA349700226.
De Regenboog Serie: Zangeres Zonder Naam, Vol. 2
De Regenboog Serie: Zangeres Zonder Naam, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe111d452bd0212c282baca84ea2e83b2706369276ce5b59828161ce0fff2f0d2. 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/NLA308200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1e2c1842b8fdfae1d766e40aa59e90caf9e887c3afb13bb8a5623725491d04. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:33Z), 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/NLA308700024.
Nee, Nee, Nee... ('k Zal Geen Traan Om Je Laten) / Kindergebed
De Allermooiste Liedjes van Edith Piaf en uit "De Twee Wezen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe655adf3587865825e99ddc9d1e06b67c4ac8346742e4570c1d88b1d21e10d00. 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/NLA349700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc173dd0a286078af6ac8d194ece42e14d68ec91373ed6b8593eb9c99cfc68. 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/NLA349700353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c65be26c6e0c9d92f9b6980bc6c6443cd6044560a78dbb342c5409adc78ec34. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/NLA349700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd42f66294b496b51a998281b512a0a4c65d4691e9d2c7fa21b70dc1ce05cd4d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMBZ91562193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c0e858f8dfea372b37a9d9068df7d57bf641f119d5aaec5e979feb5eaf793e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLXN69300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c11c57f769d7fcefc47d8fb27b06346b3746e0bf577d6cb592fd73d5e940bb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLUM72500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3b70df99687041811def4223c4e08415af66de06ad8d07a1f49ef226b04c60. 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/NLA349700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc173dd0a286078af6ac8d194ece42e14d68ec91373ed6b8593eb9c99cfc68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:31:41Z), 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/NLA349700353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55853ecc1033626d0072d0cd6dbc8ad5d258667d14b90490c5b8e1f068bdf48. 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/NLA349700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e420c92969244e80c3e21d52c9e1e5fe3fa646e0fb91544c3baeb23a813033. 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/NLS241201162.