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 0x46fb0914fd5f43fdd8876202cef315c98870e79330b118b50483b780a4835a82. 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/23448572-b8ee-4b13-936f-683b7a3a9a08.json and https://artists.proofprofile.net/proofs/artist/23448572-b8ee-4b13-936f-683b7a3a9a08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bergaran Zuzenean - Kaleko Mobida Fest III
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 0x4448d2b07ae859cbc553719445f06e64d9e200dd4dd6edbcde59d7b684f45dd0. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/GBSMU5119876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855ada9ca36b22f521bc7b76bdafb91929659ce34d356a0a1b26b9bf7cfa7ac6. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/GBSMU5119887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d1cc902b45c38453cabd6b6fa20b66727c978a9e410bf2d30453dba6cd6e5. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBSMU5119888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7adc892390518fdcd660931c3745beb63cfaef434f1d1921439e1b7b55c4ca5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBSMU5119865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f110a0146080d90c8f9f7a757d8d75beac8e7b404ff59b6d3ed17255d35784. 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/GBSMU5119866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5282cb4cada94ded2ec9bc3634d6a392eea985591c73b253c642ccf030eedf3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU5595513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a98c998d9c409f562a67d6f956f03dc86e73ad6767728cd5b3bf35d20224cc0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBSMU5595515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5256dfc61346fe338dc2533d0fad0689372167606e58d5a7d3f29b90c9387eef. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU5595516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ec182e7a5c158032592a004996395e357b6f7d0b6d6cb903200eb45954f99. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU5595519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658eb5f1e5f655f0d4f2b0ab9c6c7b8f90cc87c2eb391f41101d50ab05e5fb7c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU5595520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746cb177478102d0a492c4bf6eaa34115e0fb34f08d3b885b22ac34149c68f1d. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/GBSMU7172667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb51a75d38c64a1a70795780a5562e14350f4228177016d9ae89b5ea2908bc1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX5MY2121458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095c2262538f46c7b7de9862c8e9e73c49d5d12581bb543d0c1166bb4ee21518. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX5MY2121459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d60c080bc24086e222a75b778f505e2893b2c2b190c9ebbb14cbb5a36cd474. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:46Z), 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/GX5MY2121462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611bb87cef88b997d95546f16d82bc93b6cf3273407b56d04266e55f1df3216c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GX5MY2121464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1640b2cadf6cf1d5f9ebe4084a2c169f7ffdea7195cdf8898dc6443dcf6fff. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GX5MY2121465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22226181df7154d74d9fab97793df30adbff3fb009e9a93ceb62933b63a4e4d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GX8KD2276071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7d4621f622447cf6207cc1dbb087f8e369e7dbf6499b4516fba5cce8467071. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:58Z), 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/GX38U2530824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2274bdae2567796a66263c62fb4107b807cb5d930b56caf057f5f5938a8d70f5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX3HH2566152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac3c7e4216cd479a8df463aefe24f388a73a97a6fbe60c02797781cfa3584c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX3HH2502163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109bda8f10ebf78a188661c1d782dc6e945e74d16b3c238180dce886a9a5e305. 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/CH6540897183.