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 0xdca954696f48b5ef1d9d2a4ff106c8e2a91aea83397e7c7934b69661066788ad. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d831f1bb-a765-4c60-85ed-3ad78f4a2716.json and https://artists.proofprofile.net/proofs/artist/d831f1bb-a765-4c60-85ed-3ad78f4a2716.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 0xe1d59e001d2f4ba06554a294900cd5ac19eab0480ecbd51aac7f51f5b152da77. 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/QZZ662436712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd734baa8976b6482ccfb7161572a0e25e6d969ea2e3e826d7a1e3f46edd14a6a. 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/QMBZ92498237.
Más malo que bueno (Acústico en directo)
Más malo que bueno - Acústico en directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652d9b11da75eef0916c9034c6bb205f2fdb07a36c47db63b50ac81ee55183e. 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/ES8022400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7698a417ba69febd9f8e7d4ccec208efc217eeac84353d460a2e95a8b1f16b4. 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/SE6HN2463624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76730c816653c2922f7af1887788deb158ad0f170c6dac0673e480de5c78bd3. 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/QZZ662495445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853033664b08c58eee85c9c953ab732f949540a9ed4dca63e25d8a0c2e91a494. 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/QZZ662411548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972be39fd635f39889849216b20d699a253c5d943af1847ab3203efaddf2709b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZYFZ2372125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce774efa1a4a665a7e787d04c54ec345f06d50ee3edb8e33efda1c8c2cef718. 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/QZN882325175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f16699f9328eb91bd2698f81f8bb2b67e52f9807e2ca7bee897f58005cc5aa. 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/QZWDW2203542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf73e98d504334b8928b9ea6ad3bd2f090292c3259e49fa8ad03a467d058e6. 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/QZN882286834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427f9ae58a322afb30d254784c5f2578fdaf9efa58c424585fed0e95bfe7a5c9. 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/QZN882256393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243133a5294e3d22586c8b8fa4ca9bfbd8ac774a0c2d7dfb613d287ae185dd9e. 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/USA2P2205621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e1a4fb8e01f3b77615f11ce1ae634867ca8a71cdaae197e7fd6000e36cbd83. 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/USA2P2149531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5943f205c48634d6c20859eb039d71055e527de2263fd9bc5c286b20a54ccd. 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/USA2P2129736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a7fac6cfe51e3acb17371f669114a7da935dfca0d7746d06940e29ba44a1e. 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/USA2P2116887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc981beea8bff82f6710baa2ed9b6a67529f09703ea2050f2d08d164b173b2bd8. 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/USA2P2110483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98249cb883f76d008ea91429ea9e6f820b5e71ecd028419cc4d6e2960eeefe4c. 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/USA2P2044819.