Aida (or Aïda, ) is a tragic opera in four acts by Giuseppe Verdi to an Italian libretto by Antonio Ghislanzoni. Set in the Old Kingdom of Egypt, it was commissioned by Cairo's Khedivial Opera House a
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 0x3a05862a27db94e3e92efad15d64a360b8d44b3db77dd6ff2e019f286ba32cea. 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/115bc15f-0b41-45e6-9284-df07d5885a0f.json and https://artists.proofprofile.net/proofs/artist/115bc15f-0b41-45e6-9284-df07d5885a0f.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 0x466839892970b67b8d13c3e3c75511307758e50fef8fdfef95367a2891a65deb. 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/ES71G2508094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7db50c5a0fbf4bfc987a6f2fb179142c5321f9f5f2c53c077a21371634d353. 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/ES71G2506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf854f6aaff30c960df3522081b8438534ee2b8df95a9f919036a530c9eca28. 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/ES71G2501677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3172a63c17dd52fa3bc37af243ba634f2cac8bd457e2e4aa0bc7377b430339c5. 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/ES71G2508093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7db50c5a0fbf4bfc987a6f2fb179142c5321f9f5f2c53c077a21371634d353. 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/ES71G2506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf854f6aaff30c960df3522081b8438534ee2b8df95a9f919036a530c9eca28. 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/ES71G2501677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd8ac992528f64ff42f9bf10fedd6301ba2464f20680bb2cc3d7a2f298f5f2. 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/ES71G2325472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3554f0a72be5f758030e6b38f6e24117c3d5fe91c78e32956075291c03446907. 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/ES71G2325468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34beea5ff76c9edb1bdb39a3d9d24199fe83ab9a6c09bc38ecc4949a52fc910e. 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/ES71G2325469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84320e8edf8daba50ed47be9f5b81575fd2dcb91ae224b9358469482e11e2d. 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/ES71G2325470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00612614ed6fbb32a463c036950950e017ffdfcd42e3240744753346aa779f84. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA092308954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9955d0615c8c72701b34975fe41dd7b96a8691ad7d14c9584509e3a44de8d42e. 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/ESA092302197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e4189f5cd3768e6bbc8e29b33560dd86857c91bb7ead202477d1502a4cc93. 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/ES71G2325471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd8ac992528f64ff42f9bf10fedd6301ba2464f20680bb2cc3d7a2f298f5f2. 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/ES71G2325472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cf9a894b37ae5656d5d067088c894581205081d1be2e4a86f8e2f724c70a5. 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/ESA092305260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cdd34c690e5fa0e8f878f2e50b3a345406b23531a63983c4b45e545f46a4c8. 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/ES71G2325473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c270ff2f0e57fac9687a2f17eae83604c71bd002a3e8c37a77f94f8d61bbb3. 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/ES71G2325474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9b3d4a81875b16094c7190b4ef8f8bf6eab360c16adaab432bde89accf38bd. 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/ES71G2510099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ba3591a716eb01ec3cd5eb03a638b2093a1a746fca0f31dd15b2711b91a90b. 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/ES71G2510101.
sepultura (TICOTĪ) - Nadie González, Peter Petrowski REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31dff5002dd87fba99cd959e5924c84a733d64d36c536305fcfb6d3114dd011. 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/ES71G2510100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1eaf4cfeecffc40c1e6b0bab35d5df5e924c6dbf42c9cbfe531f5bd28b2b23. 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/ES71G2510105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28526dd18db459a29c5856b24b1cf31685881d85bd0ead574b6110ebdeb1fd09. 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/ES71G2510102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2184a65d456eee6a62f46912f631028a3328f373acaaee832967a6fe7178d288. 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/ES71G2510103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f62df9fd831de1b006c2f57beeced70de606e74439ef6be67792913fc938cc4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2510109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb4fe39836441e1edf7825ed286455519e52bb907994644463216528b75a4d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ES71G2510107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55dd276adcc21d84c419913b50aa24b38b61d39cc0b984bb7c3b116bea48dff. 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/ES71G2510106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5582ec17b12e66e713321f67bd8a66ab99c1af787fccab3fa0fc035979e81b0b. 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/ES71G2510108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3a561b01953a48030b1b0b2c2c1d5c09a705fbcc3cfbff05cb409d357f9acc. 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/ES71G2510110.