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 0x54d8a2a56cc60c9e85a8b81d638358c943364b134cb4bef392f0e5d3974b28ea. 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/5107dd3c-74b0-43f8-bf99-71cdd23ffafe.json and https://artists.proofprofile.net/proofs/artist/5107dd3c-74b0-43f8-bf99-71cdd23ffafe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Defensores de Causas Perdidas, Disco 2 (En Vivo en el Sodre)
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 0x09ab75da903c7e43119856c954227b8c5a18261a7e3110ec494a567c0bb0c142. 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/UYM122104693.
Alrededor del Fuego - En Vivo en el Sodre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf0e70a15c8f5f6a61d246fd2e8adf59e03cc4707ed1d1e515568be5b6bfbb1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UYM122003253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b2a15fd6150d91a98228034b7891799cf7eb4f102100ed10986baa3fae3034. 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/UYM122003252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e190e1d5a7983020a8f9ff959f50761866cf185a70e6f6ce1ee803272bd02. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UYM122104697.
Bajada 2008 - un Camión Que Se Va - En Vivo en el Sodre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c8bda14fdbb65770492db940a4ce8d968239265170e95ea221b877a965344b. 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/UYM122104701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e7d435613bdb5a168a079a322fa7b4a23fdb839681fc5b36f8add6d578a671. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/UYM122002788.
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 0xdd0552b8e456bb1815a6bc4c43b7306553b51af6b33aaa6112d9a5994e456929. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UYM122104691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2f64ef8fde62fb671941cc1295269b4c00b26975b06c4aafc33e827f75693. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/UYM122104692.
El Murguero Oriental - En Vivo en el Sodre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3e30b2600f514e91276d2ac868979e8798fcff9bcda729779ebb5f82bfb073. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UYM122104698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361e3e3ced8b4887d29630416dd4bd8b69ba937d4baff1061e14980e247dee32. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UYM122104699.
Retirada la Comunidad - En Vivo en el Sodre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ee346ed3df92fba059375ddc056c3784a674211242a6c90322ea076c66b00. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/UYM122104700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b3ddb30ee68245a29ef06dff521c88839696500ac4b1e8d435c0930e6fbee2. 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/UYB282401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018afc3e7f4ee1cdbb8c528cfc185dfa8c5a63a057f68ac4d2cd13d4e0be707. 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/UYM121601283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb930894d1b3a8b3d4c90160eb789d181136a3e1df12c0653bd7fc1775fa82042. 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/UYM122004141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb235f6f81aaf64b3d4fb2ef77c32d9b83570f54a0832c3dbb0691f144077eaf. 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/ARUM72100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1712eb5ced41576e7d5186f4edd04394cd1d1d617a6d1e6bfe28f50834fed15. 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/UYM121201960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a85b5a5825121b0cac3df5b759f2b781e77954929885971fbe4c1207840803c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYM121201970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7fc85b209e94b545e3a2879b8553f752e241ada5cb265c74681f9fead3ba47. 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/UYM120900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7833c14e654e7019d963990cfb3ef938886fa8a7988c0884c9f95880b4026c2. 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/UYM121401583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be41a16e09ec3ca3633fd84ab5baa8466000412852b7ff32f35af0935dda488. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/UYM121101068.