Gonzalo Rubalcaba (born May 27, 1963) is a Cuban jazz pianist and composer. Early life Rubalcaba was born Gonzalo Julio González Fonseca in Havana, Cuba into a musical family. He adopted his great-g
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 0x30ad3aada1c5dd85554dc0fd3e90354a534cbb1d2fefb1190fa5a4f1804c2d72. 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/931fdce3-5f27-45b3-9f48-f49e22a2a31f.json and https://artists.proofprofile.net/proofs/artist/931fdce3-5f27-45b3-9f48-f49e22a2a31f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Incompatibilidade de Gênios - Instrumental
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 0xa5cc68b77b24aa41def56acada42aca71008b3118f20c02b1aae7bdb2e8ab4cc. 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/BRSME2400618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78d7e6e0cbbbe90e8e1330dbff665935cf84349989d9fc5e2e48c4222803b6c. 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/BRSME2400622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75894a97c001d339e0db7d1aa49d9019bcc429e06b6dac8603c2a03eaa0ad239. 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/BRSME2400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66a50a55e9fe901cdfc50c0c704737993965d48df9b3e59da4e8ea105215992. 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/BRSME2400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d7e68fca381e901c6caf94520cb8833997616fdcc09366ce7c030ef819d5a0. 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/BRSME2400621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbc4960a5bc045746d0d69df022fa62fbbd9bc39454622d2f850dd9e3dc3540. 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/BRSME2400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf979b7164b4a1afb4479f36e8168fa45cdcd67e3a7ebb15d77fd9b3061053632. 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/BRSME2400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688287e174205d99b73b6d0f9c519db94f1d4473ec5a3f877d986eca0036418a. 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/TCAGJ2212195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba45a07030726fde4decfaae8818f41cf570fff38bf2c081cc185fcf693d0196. 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/TCAGJ2212203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de66aef8e2dcff603b89ee3c565f0edd56f0a398a0da8ba958ae71c606bc0c0. 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/TCAGJ2212211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1878720b3c24abaa3d31eff20c86a843278b2cacc1747211d0f06a6b9416d. 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/TCAFQ2104543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684d509c73fa3babe2adc5bd9254f30b8ee5bba9e0b69d8dc0186c7aab171cfd. 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/TCAFQ2109216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6244f8d45720732c817171a0adacecbc845888fb1707aabe941e49df9bfe99e0. 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/TCAFQ2109261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ce1de084f0e298319acc6a06486b7782c76a5d8b102dbf44592a358b16f24d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TCAFQ2109264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8047359cd5c0e8a20d3972caafd7735911da5f74cd0b0ebe6428f497677c92. 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/TCAFQ2109270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294df4c7e4a297651932382af2dee73e128720d26eaf9ab6f292e0c11061746. 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/TCAFQ2109278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48007db410fc61ce84da13c2b2386a5c0808879d20a0f208c67c1fa0e1aaeecf. 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/TCAFQ2109287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2909195c23324c151f25b368518f61a32e4a37503e1e574cd44ff5e3fc5e528f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:43:35Z), 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/QZJ572100003.
Viento y Tiempo (Live at Blue Note Tokyo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37d6f8cd08915a167e482ff9eaaf5cdba2cb8322f7880f4328497d64f729ec. 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/US7YG2000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fddff7b1cb6ad0dc8c0845e64eee61be89d0bdb1db96ee509fb21ae9f359a46. 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/US7YG2000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63431cc9daff077b131e8831a1825c9647f69dacc850e078584bc510a3defe9f. 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/US7YG2000412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d6751b85ff9eb7286fdbb618fe5528d98d4dfcbf515f123aebf133b6fe8b0. 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/US7YG2000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaacfb192eb9430afada54a7fb374401531e1c2283b57c6ac75bb71b986be904. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US7YG2000414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a014a2d41c59f4510967b717990d56288ddfbfe50ced54493a0fd7e0ac217a. 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/US7YG2000415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5794124fab8a1d393e1bcb90311f0c9041dd317471dc3d0e59a140caa7f5c0a4. 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/US7YG2000416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8b86234a7cc4eb16da0b73b40e944b747bc0769138891e22289e85587d723e. 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/PLUM71700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf7ec39f716a7551a3167397fc4b07f3c15c369db92d4c97e2326678fae3fa5. 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/PLUM71700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464278de39a899ab61036735288b2a1097f2d3cc160416dd8842b0e49a2fa353. 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/PLUM71700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a40f208dc4e433920b2b7f3f598e6ee773bf89ab73afb28375404b349d0da75. 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/PLUM71700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd016908274221e037b0dbcf55f9a3573347887e16dcfe2fd8de27dfd3cea92. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:12Z), 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/USBN20500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c9db0c6db21a73d6302ad9b75debbb4112e81ee2c46e36fc2651b8cec46d2. 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/USBN20500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d66269f9fa4424e171860f62db960886da99b548537c2760fb27794d272ac. 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/DEE790515620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c10625c56b2d063144260775030a46e2548d8b261f169ed5cd4b01a94f5ea4b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:56:35Z), 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/USBN20100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddcdc122ece497df114db83173c3f6da470909c8653c8152c4da4d32b99eb4f. 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/USBN20100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f1057041e175b9341f93e865b360fb0d81a233eeaba39658758803e06158f7. 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/USBN29900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53b2e6bf393b0b52dc48c793557894275e672bafb653a38212ac8f5ca0037e. 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/USBN29900299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b83dc1428153913cdafed8a2b55b4b05675d82aa35ef7049f8726e3ac65ba3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USBN29900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10821ddabcaab8e9c3bb76f05eab7ab5051f885f1d37133b7c1305674e20e5a4. 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/USBN29900303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe254d474b3b3ed5ae3b65bebeaaad7f0e6f15e9d344c1c069e23538c91a14603. 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/JPTO09121490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4af122d43e2c0625391ea6773c9d6710da5b95b100e3cd38b0d96971aa5542. 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/US7YG2000409.
El Cadete Constitucional (Live in Vicenza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8470849fcad6ae617085f9bdb3e63f419e0a0a0061b0c32f1c6aac3618bf15e1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:03:52Z), 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/USWRG1000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c32cf2d5e9fb95e3be305b8559fee93e8afda3c7c2546783443780ed466f5. 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/USTCE1067998.