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 0xbb4bf487f0e59c5e5f3edda30d315c711f1bf64fcfe2e84abb70615c8f982367. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca3c66d-07c4-4064-b9d3-349473819476.json and https://artists.proofprofile.net/proofs/artist/2ca3c66d-07c4-4064-b9d3-349473819476.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 0xc0c2d2d885b8d78eda0ea6e8f4aca2ba278e5c26f75ac22013cedee02cf1d92d. 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/QZMEM2064478.
Último concierto del 2020 en vivo (En vivo)
14 Canciones de Nuestro Ultimo Concierto del 2020 (En Vivo)
Repartiendo Changui, Vol. 1 (Concierto En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b09e73ad7a16a421ebe5b97da3f404cf50c68f44c4da831601c5b36f9243d06. 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/QZHZ62295297.
Repartiendo Changui Vol. 2 (Concierto en Vivo) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee9655cec4130b3c92fe23f2fd1daa6b01f1b99a3be7d2e6f1b7709cc899ccb. 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/QZHZ52273821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0054efadebff0216e795f1967f8c814f8e0035c3150e9126b4509d828838fae. 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/QZHZ52273822.
Repartiendo Changui, Vol.3 (Concierto En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819fcefb3cce2fee94a5d17be256f777509842c552b830cbd40f638a85256a17. 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/QMFMG2331198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3a64d414652d19971f2018402ce6a64d0cd2da2f3df1be3b552fb7c029790. 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/QMFMG2330872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204952fce81b05f45e45998f87dbd83623e3773bb74695f90a1dbc8f623fb04e. 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/QMFMG2331196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70e2fe64b31862bc431f7be90c0a6ce7336c59ad4b9b608023b2606a1c59815. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:34:43Z), 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/QZW9N2261901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6035d58173434de5ae129f1a95c0019f1299cb33a17f83bfd8d8025ac9568. 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/QZW9N2261903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57405331fe77dfe3e817fec058ba966aecd50752c5014950f3c3b2a73c5be657. 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/QZW9N2261904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46c2ebcae2511284fb80d5f72407d0ff8e927b1d8b536842514e10df2951a0. 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/QMFME2490255.