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 0x6caf8b9e9f8afec986d55ea23a7d3de4f0369985593c7a8f640078d3acce15d6. 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/eef8a933-84f7-4c62-a2dc-8f66484a0be4.json and https://artists.proofprofile.net/proofs/artist/eef8a933-84f7-4c62-a2dc-8f66484a0be4.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 0x1615876d54b92f863eb286f91e82b275f5d0fa998e92906df5de42da5fe7104e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZ93L2136338.
Toet Toet Boin Boin, Fappen Is Lekker (Dr. Tequila Hardstyle Remix) [feat. konijn5]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e52e91145ea248f3c88f0f02219135c0923c12d99c1b359e903be52f731d05f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZFZ32336210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66f116b3016acb70a8447fc0f6b78abd77dffb16cf5022d159b51227881b1bb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:44Z), 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/QZDA42319756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52cdb6896532d5f402898ee4c060e95d3da2a87c001ec506eb99b386ae3312c. 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/QZDA42319757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6438ad357d9bd623d09d3db5f26e6f0bc6fb132e6312713dcb3a9fb70e28252. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:08Z), 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/QZNWS2345911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24f7b146b875c4e5da7e0897e441adafe295286afd1319378a3decd366c4f7. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QZTB82387802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb31e6a787341b7467076aed505100817587ccd3c6bdb389250568c7c9668d88. 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/QZTB82387803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb6c4a8f2974256bdebd68241235220addeb0e6c269ec096aa2a50e4fa78ab. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:29:35Z), 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/QZTAW2383135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feaa09105e413f9d71b1b472ee58905ca16efcc953ef9d63dee560f7b641a56. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:21:00Z), 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/QZWFE2345329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4507ee20f0b51d51aed28f03ba7b6413cc3e98159baaa018aedca3e8321b5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:46Z), 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/QZHN92466051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997024d5dcc0a34a8647868a9f02479349212b81a0060927a09cc5a9341c290b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZK6H2406543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf85a503b36136e79c4ce1b7d2cbbe3fcd7e3299cf7c438a255572850373c5e4. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:23Z), 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/QZTAT2488565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1eea9f307a20eb942f627bfac46d4e71c911a4675d708e66c789d46545d916. 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/QZWFM2448378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b63dc625f12d68a5ba9e65db29beee0334fa55521cfa48f39e5398887b25e0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:22Z), 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/QZK6P2504288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9245f5a0f3acb588a3d09b169303e41c3d099d88e360d31ac9f82e2200e8e31. 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/QZK6P2506741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808bae0c4cd76342c12e0050bc201b882032982e43a0fe829dc8528e6f92b43b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:04:00Z), 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/QZK6P2506742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb3ba0104b45c9b243b07091e859c768123cb018a6962f690fa4a632c7602db. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6J2574660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a785775e3b125689d6f06664f593e8681419309c0a342dc42b342bc14ea847. 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/QZK6J2574662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74865f06e05d96a165cc85af64192eaaf47468063f730ba365014168832e09c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:56Z), 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/QZRP42514651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f6c4743642bee4a5998dff8dffcf13d72fa32d0e319e7ac82696fd6c4389ca. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:58Z), 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/QZRP42514652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b6d801b73e3766f14e57ce2f9a98e92b1db61b490de9dc70c1835227630bbb. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZRP42514657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018e32839fa1d5e9a499ec5ced35594eb6b75965c4227df24ea36cfdf17ab343. 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/QZTAX2577566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555bbdeba741b2cc8f9babf40031bea0374a465480cbaff0c7cae632f2b8605e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:35:15Z), 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/QZTAX2577568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43888f07944f76213ce12d3c9b960cec588102a0093a824f1c58e5745267eaf. 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/QZZ782560610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee8fea73111f4d9feee8311c9675b8795fdcbc1faf17d179c4acdfd39d4c97a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7R2553497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe50765ec033b88be1e44331be9a2f142db8876f93055aa6e675880daae5f4f8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3F22569706.
Suffe Goon (Sint & Piet) Sinterklaas Parodie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a55e8032dd923c554cf5637b84899a140bc60ef55aab271b654b1196191920. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QT3F22569707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960c4b89ce75df2caea4e1d442cd302bdbbf1a10cfc0d5677ef66fb534a1e202. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT6E72502896.