1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x435a14ef1e9f9e38a61a6dffe3f323d8da4a6e04a3972ed0021ac60f575bcaf7. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86c29470-8425-4e5d-9434-83ecc717e9da.json and https://artists.proofprofile.net/proofs/artist/86c29470-8425-4e5d-9434-83ecc717e9da.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 → block OTSBitcoinBlock must exist at that height 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 0x98784ac30adc3a79cd1d3318f85984d52d40aaaae1c36fae0f947e5c0ca55039. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/PT7GV2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c9db48465eb1c5ebbde7c4e4649ec1da575829118e686b7d86d5848c30beb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PT7GV2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b23dfbae3b0f4fed81673e00c5e61413b023bd28a3bc55691ce279f01ddd66f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PT7GV2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc599a47eeca61b17b30427fc128b5f049f59d1c3be4c13ffd22eeb0116c5a67a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2193074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3be1a60e4e62f0d03e3ae1df754bb87a66449be56e24cf749be31f9eabd5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2193079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d12a12dc096e05555855199c0cc569898a2910a8fd4891a4dfdd8cb5b5b115. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TX2193096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6929a0f4858063907f18b6b30bad8c3428384930e6f236a3bac016877533004. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2193105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453bf94d204328a19685dd4a779f09542f146432675bb17b0374de8db8f3a1e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TX2193122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df15dff6c887f5bc90248dd4d714e70c5db67ee773f8e7a4cb594d448f3db97. 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/QM4TX2193136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742dab85dbacfabb7bf10d66deaf84d3b1e31c7c42b229ee3d69b215f56c5415. 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/QM4TX2193149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93cca0a62ca72c11048d5cdad454c92e2ff512b221520a11c18d95109663f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TX2193150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9f2f35a7c3252bf8ff5b08e3af49e3d42895eb38f097a4f58d4cbb35198b71. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TX2193173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8541cb474bccf8b82ac36c9cae21c3c3dc65c14dc884b58793580b0900da095. 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/QM4TX2193176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329b44404ac6e3e7e0dd7662f341237d1e05914285901318ce2b3108cb2155c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2193183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae031433dc349ab27a22313400b362ae02b99501231c620d97dcfcd361c33cfd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P42082641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc950e760a8d7bd5ce568fca582f0c2a79e6053541379b7ee81fc91ca5ccbcb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6P42082707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2194f7478d666b25d58b52f0e3538124b1310858f9ba3cfee4e88c9a7b238ff9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6P42082725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb49074de3480034caec70dbbec94e268c25921824b270fd01334d78b5ce46a. 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/QM6N22016450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12115ffbf882b3c2b4f972a232e8b43e38e2403d066a5cc90da84309c3d18d4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22016479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25bd29878a88a866bce187e9e4619f5aebfc29c4ddaf4524482228c75251892. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62254200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51662133d89fd4101e67176f2067819c1adf9351293fb4c6f86accecb106580d. 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/QMDA72130565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9a84e2e002dc9b2abab44122970f9662056541ba8f1f17f49cf5db97247e3c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW2379774.