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 0xfabaa5f20c5628d65422dad5dae6bd66252fc97c6f896080a7e69c9accd09174. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/702e59d1-2a32-4066-8131-b5283d410005.json and https://artists.proofprofile.net/proofs/artist/702e59d1-2a32-4066-8131-b5283d410005.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 0xe4f070a971197b62c4135f2e7d021c6dda7561f832204b92e3aaacdd276d7b1b. 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/SEVGT2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b8febb8b7956d149f1bfbea1a7d65cb8ec04930519347283738ced39fb01a. 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/SEVGT2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e4fdf00772f4d18572e704e474e0868a79bd6ade4030e722eab59f64eec10. 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/SEVGT2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454701f6c98312099701209ac8890813841e7824545b345411e425475a6e9690. 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/SEVGT2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf983ac38f883ab315510a0859ad64f26f7467b6a47bc472f2ff64b8c268d2b3. 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/SEVGT2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb4390f88f91364d82ff9242211514dcbefc2648b674ce12d63c80d372a809d. 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/SEVGT2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d4f5805adb55cbd2652ca80c9eb309e565a1d36ac38756160bf12d22ee3b9. 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/SEVGT2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f968bb18c7d53f5a1ebe0a87783ac8164cc9c9883d973579cee4bedfe8e1d23. 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/SEVGT2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a8456b06e5cff3cd61b56f9cb10dee5b58df4c06597dd4557c985fb995023. 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/SEVGT2200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc1abfec4d6c817c6fed0010353706424e4b9b7858430221dc794bf64b4150. 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/SEVGT2200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e4fdf00772f4d18572e704e474e0868a79bd6ade4030e722eab59f64eec10. 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/SEVGT2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb4390f88f91364d82ff9242211514dcbefc2648b674ce12d63c80d372a809d. 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/SEVGT2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b8febb8b7956d149f1bfbea1a7d65cb8ec04930519347283738ced39fb01a. 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/SEVGT2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46380bd672a4e9d7db9aad93dacdcc1e9fa3871a388221a3eb25a5ab4bdd8647. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEVGT2300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a8456b06e5cff3cd61b56f9cb10dee5b58df4c06597dd4557c985fb995023. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SEVGT2200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc1abfec4d6c817c6fed0010353706424e4b9b7858430221dc794bf64b4150. 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/SEVGT2200190.