Pedro Manuel Guerra Mansito (born 2 June 1966), better known as Pedro Guerra, is a Spanish singer-songwriter. He originally performed under the name Pedro Manuel. Biography Pedro Manuel Guerra Manc
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 0x2eb1ba7bff37bd486ab68743fcad046d23a99a87c6a5728036723b03e7da10c5. 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/0cae75ed-6702-4036-afe2-e6418b18e6e2.json and https://artists.proofprofile.net/proofs/artist/0cae75ed-6702-4036-afe2-e6418b18e6e2.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 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 0xe7ce8107f008127a4d72306076e021a2a080dc8baa37e76d34c334b815e1f5bb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BCI6Q2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25769943d62f93b607d1c1a23ffc1d2cf1272b49550fd61e8828e1febf93f72e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BC5192300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5fbdf0e32acf2403d14640e6dbf492684c0da4da4b4d6702fc369f9ad4c3a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BC5192300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5789a9ec777fbf0f4d73fb984af3d97d41eca04183379e4928060b8aeebdc3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BC5192500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432568a2d3e87bd21c2398fa28074935655d7bdf5046ae32a2fccce2564d4303. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BC5192500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517bee76b5edffd4d30877f47656f6ead03d3973a648ca541292a2ae67e517c3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BC5192500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980bba45fea8e80e33fbc3be1f2cff8c420ec6618366638675afbdaca11b94e4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BC5192500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335fe3da8b4864507461ef24b3be8bb81bb8a834d8568616494025c3449f15a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BC5192500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517bee76b5edffd4d30877f47656f6ead03d3973a648ca541292a2ae67e517c3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BC5192500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5789a9ec777fbf0f4d73fb984af3d97d41eca04183379e4928060b8aeebdc3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BC5192500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432568a2d3e87bd21c2398fa28074935655d7bdf5046ae32a2fccce2564d4303. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BC5192500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639954b8d7faecfc965c142d8187a0767827b8bd9193fd1906be67c20acc7c24. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/BC5192500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517bee76b5edffd4d30877f47656f6ead03d3973a648ca541292a2ae67e517c3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BC5192500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074466b74f2ee39f76917e1f4595bd18d9df44e6f3d4b1ab16aefdf66da49a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BC5192500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980bba45fea8e80e33fbc3be1f2cff8c420ec6618366638675afbdaca11b94e4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BC5192500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335fe3da8b4864507461ef24b3be8bb81bb8a834d8568616494025c3449f15a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BC5192500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef797a3b448a158cd051a2982f55d6d1fe9e2857677981855ecbc2c5c227a838. 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/ES5021300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc785e40964fa20b0d345dafa6df0812478c1acf3b2a5298242fbc03d0762c076. 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/BKJ7K2400748.