Ten Sharp is a Dutch band, sometimes labeled as a one-hit wonder group, because they are best known for their early 1990s hit song "You", a hit in 13 European countries in 1991 and 1992. The two band
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 0x133bd12b61b3952f3ba259e79e9fb6db981c4dcf2415a2e8e4ee24761888122d. 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/e9134cb0-ce8e-4070-a528-920cca079582.json and https://artists.proofprofile.net/proofs/artist/e9134cb0-ce8e-4070-a528-920cca079582.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 0xa718326b1eed0351f4f837a4dba04dec7ab9865df1e33661fa47e667f75902b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLD019102003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e40e68d954cb79d858782d10e73247d8027b8d9fa44d374d637694e44bc8f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NLD041200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9296b13b142a40ffdd01a827368bb9f8086e5f5535fb1c8d67c74a2f1e6ba0e5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLD019102006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101de800eea82c353d832e7f3d2554526714529a3bbca9eb9d7c80ec8ef6538d. 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/NLD019102007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37312ab9650b23f9487d44795221f2f8ec123495ac824093e1643b60913d90e7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLD019102009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca348e6699caa59a745cf59f979bc5b0df1eb54fb14a0a7e22f05ad51ddaab. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NLD019102011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e40e68d954cb79d858782d10e73247d8027b8d9fa44d374d637694e44bc8f. 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/NLD041200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255fcc007ff9058125786555a802b704e82a046c6d49664aa966c9553f38a7b6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/NLD019302003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3b663efe8e8b3ac96040e303bb864789b02842cabfd1dd1fb0635c872f6931. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLD019302004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85183669fdc9593fd7bd2a4447ddda955fb8d8914d8b2799c0ccd624ae3438e3. 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/NLD019302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b077c8781bc10b1c66317272aeb85bb29b080c726a4a571a9088524c15a1b6. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/NLD019302006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b68a62db36079e95ca883d7c21a58a13892cfcf238545ad2652484e4350bd1. 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/NLD019302008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26bcf1bdf693ff33f8115dcfb42fe498bcef83dac0b2bbb7f9944e90f6ce6b9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLD019502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53152bbe74ef2ffcfde543d2cf71aef77560c0172e8994e2e223765cb4087607. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/NLD019602026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a5d9d128d5aba1cd68688a02486e47896efa8be1841263a824f63e2f1c1f53. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/NLD019602019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ac827b1cd94bbb93c1531bedfde1bf7a6b9e06ff548e3f30caa6fe7fc1511f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/NLD019602028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54e079bbad5ab6524550d9d7a593936a9a301c3f3a49aeef9c049feefcefdc7. 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/NLD019602021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadd882ceea32eb24635b062eebb2c255bd54ad7cc23cac45519ccd42c677e91. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/NLD019602022.
You (’09) (Instrumental Version) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfb1ab9cb61b4d044fa80cdd144527f482e2e1b78315d4018c98ed500aa102f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NLR631200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aebdc394a1366bcd4e289397b1d09557c066d9cb811320d3e5edd99b6766be. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NLR631200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09411fea7cc112b09d17c91676582dc16a5fbde8b7bf0afe7972353353e49b74. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NLR631700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ac827b1cd94bbb93c1531bedfde1bf7a6b9e06ff548e3f30caa6fe7fc1511f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NLD019602028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadd882ceea32eb24635b062eebb2c255bd54ad7cc23cac45519ccd42c677e91. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/NLD019602022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d8fa527052aed08d3b6f14ccabc2dc908c7e12bc3a412b782b3b958bdc921. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLD019602025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf800645ce1368de2d45aceff739363597e4a199ba4f6f69b45020eafedd5294b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLD042200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085e0c465f0cadef7e609d9f4a963053b68a873b27fbac04b26a8b43d427e38d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NLD042200074.
Under The Water - line (Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a80c221b46c8f963bc660dfd47dccebfe61c6eb6cd03cbfd5056758b3cdd7b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLD050004001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a0c7634141eb22571e011b9d2343cc7bb17d648527bf0720ddf3bd6c77a567. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLR632300002.