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 0xb692d3aedb2676642b65b141536b00201603c6cdc70712838e1a8f57909ea422. 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/620f0a06-31dc-4d70-b0a4-0a0d363a0154.json and https://artists.proofprofile.net/proofs/artist/620f0a06-31dc-4d70-b0a4-0a0d363a0154.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 0xa09e9c9364db8fb3eeab9045ff777dce98f50b2eb087fbf2e3eb0b573b2892be. 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/FRS182099144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528cc9472a010aaf8762a199e73614fbaa5389ae14248cbf5a4cea4ecbb7f6de. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:04:41Z), 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/FRS182099084.
Tu es dans pain (En attendant petards d'ados)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5288c04c4a403830ee528f3b270c4b985b19d22fe936227b44358519161c772. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRS182099083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629882f47138b9fcb62ea87981366daab1ad730c2dc2eae481660e9988897de8. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FRX872053610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b7556e2349787823a5da5c8e917116945dcc4227d8f500bb13e015b001c14. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX872043401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c62f55ad5b98303ca47b63fbe66a4f6de7923a9153286b48dc226c37fae7035. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872043402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9753abb186b55d0ef2560ce21e037152d648d67e0cde6e9cf1cefaa64d771d. 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/FRX872043403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd962782c62df02e0dfe2dcc22d38f19190919729f6083dcf29b45deb8eab4170. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FRX872043405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd65f071b29209d42798d7a031b4f7a51bca62c85a503099397c7076c6f620c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872043406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f63e170ad2910abdbaf8ce910a92c1bb48ba947974d1b979e384fd08176aeaa. 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/FRX872043407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd99f4b7f7bea623edf6cb77e2456744d07ffe1f4618327727ef8acf37b32e6. 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/FRX872043409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f452db455f2c1d350bdcee98f1d80f3fe906f678aee1e1057d479657d39f13. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:55:42Z), 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/FRX872043411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6516a1696d7f7e8672207a1694f423df5df9cea27d427b2f8c545815902a8531. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:06:37Z), 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/FRX872043413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee1a757a3025c3d699e438c30446bceb7d52e1bbc1979eba5d7db465caf9a4d. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FR26V2004531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d37496063361db7f2ad1be6f1d40405d6a3068d14fe34ebabb0440fde025f8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:20:27Z), 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/FR26V2004533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2f8e95c3eb0ada6e6727947ec179746326cce0c2fbfb3e8269901111b6c22d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/TCADI1718939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1532e7471d1f3f874e25be6c0d67c529a880c3e03f2fcfbdb12959018e2a5f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCADI1718942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1942a6f9f0bd200bcd203df4b7aed7b425c725bbb57163ec569bc5900ecdc0e1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:07Z), 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/TCADI1718951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd1bbb906afc4747e19f124a68489b376dc46a3b41f0aa1e4f7d9e8e63184e8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCADI1719076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52a0eddf17637fdefe6e7cd77497c5fc00496efb05f112e6db4e842f6ea05dc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:09:16Z), 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/TCADI1731144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b862106eebb7465043b0953fe990bacc885e9ff97f2e77d6930c59e0e15be0f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/TCADI1731157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607fed7bf7104dab2cf5faae537fc35505fa55d01a262a7691326965e57e253e. 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/FRUM71801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba518aead57dc3c1b6a6d02f8f8ef7d5c642078d8977bed5d750ea3148525cb. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRUM71801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f530e4a21d14bb714ce2ee5dad9f4587a1edfb70d30d3ad2c152a2a3c556c4d. 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/FRUM71801034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c335380017555b6d390014a8107a6757e156b631c89e1f055a9e95b7dd2d97. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRUM71801035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0e55c3f4529912ede887500a6fc9db4d5f581ff86097b3c027ba1aa107f37b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRUM71801036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0b9cfbe2598b8e821637ba75f1816c35d605307336ecd6251bf8542854832b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CIUM71800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9382d3ce2639139824ca26050ecfda33c6163f39dd866ceeae9f5180a6a965e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:21Z), 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/CIUM71900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a79106c4daae1e35fbc1f64ac2ef3708c3c4d07d2441cb660b7d143c1d958ae. 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/CIUM71900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153c1c020357a551f5e55f41cffab4c572972146bd37dd3a0001a0547d9435c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/CIUM71900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6978ba85c9ffabdcd2896b3d85aabf0e30606dcfc3402363c16533bc2db93f. 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/CIUM71900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceb5418a36e4a0b14942c9ab1f02268c3785e1e3422d3882450d6b445ffb222. 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/CIUM71900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc053e62b221cd5035c201db4376ffb86500460b64c341853b90544f4b849a735. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CIUM71900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c78641639796fbaa076d107b252ae180e5f7fb7affcf0d01455eccb220388d5. 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/CIUM71800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b342fb0287cf7f57cc846b0ed896c5ca01420d4eb6d8e2de5b3b0a6d22caeeb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRUM71800530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920afc3aca2a153a9e606566ee709d78ad07d68c80a2634bc1aafbbc15fbabeb. 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/FR0Z50041645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17d44cdd601bc32249b225ddf59077e576b3ceee4abb6e455409b00b0ee070. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR0Z50041650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6becbac7e416035d7f62589b349f889aed76da2c685050eb9e93e1bf54448f. 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/FR0Z50041652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6567464c53421d8e17061568b54e4f61450ae23ae3ee3f1dc91287b23198fa4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:58Z), 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/FR0Z50041653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ebd16e55c80a39da49f4a3732f3b3c0751a3c869c2c15b548829c679ed48f7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR0Z50041655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6a2e93e7404f6e7ae942df8dbddc2fe0b16d2f6011a71d860d4ecabb5e993. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRX872137275.