Pérola is a municipality in the state of Paraná in the Southern Region of Brazil. See also List of municipalities in Paraná References Category:Municipalities in Paraná (state)
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 0x31faeface11b4b8c743ec48c2dd4510081628a4fd15ca644cc7b014aacd9de97. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f2a5a5-8d2b-4b12-934b-002a1df8adee.json and https://artists.proofprofile.net/proofs/artist/d4f2a5a5-8d2b-4b12-934b-002a1df8adee.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 0xc9eac0db652ff74ffb64a81c934d180778b343b6720f568f4f86c6a0e9ff9c75. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ESA011998603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736476ecd330e23842beddd67ed1ac35195c2556d218f9896f2ccbf97750cfb4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PTBM11500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06afb3a63d2f2148ca7eb941fee8884c5025ee6b7611204f66927b5062ff03a8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTBM11500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1852703815229e2b56ba289ebef6c4721a089c1289b15e3dfb09738b930bc1ac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTBM11500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427a851f3d6fd91d8c983487eba7933f3fc58b55fd957fb9399a75aa4e251e10. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/PTBM11500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf6a117584f936da1f55b8492ad275aaf64c149ad685832603eb545c9cb270f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/PTBM11500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3190de94fec9a2ba382662e127febaa870588c2c982fe38d41fd19026dbd98. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:35:51Z), 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/PTBM11500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f70737e46381fd723438820a14a1761e860f511df706d3a639a4576ad84d2e. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:56:32Z), 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/TCADN1819492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be417534c93d41a2603879390a72c3195536623aeed4dca2581355813fcfe82. 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/TCADN1851237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c4f3831bda2900d125abb961b32782e5d5a94511f11749951d23dabd929b18. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEE1923300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c438ed56e96050ccb0446ddd6cadc78c0d2ac0c57f83b13501b5e0b85ef531. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAFB2012429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c914afab693580aef01203c34ad78fd218753b9530306ded693780b57a781. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PTUM72200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10695735efe310e57a6f2a7ab14a743400f5e1814018ef34de0a90dc7629e3fe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA072211358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccac0b802f0bd1e67e4d60b6a5967d7d47340e16b9bb43fd7e3298ab66cffd5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA072211360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790aeb14f9ccbb46492410d22c2e2771c3445991cf913a29b894463182798c51. 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/DGA072211361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb9565f3d82c6a758c73be68158eea2f440f7136f72230290b8208db88a4632. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA072211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b993ca7c8bc3a76cc42128990b03cd185241cb7ae0c936282afa8004e8a9b2. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:38Z), 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/PT2DY2300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60c3a0fa9eb42fee5cf34f0e5a612384f34cf67ac35a54529f8bfe023981380. 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/TCADQ1848123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba9a9dd9b7536f6c0cd1459238e61420684d7125c57c4029c3fa3ad6f532f0. 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/TCADQ1848181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f19ea9719f9c8a372921a5be9ba00b2ed575eee0f43cced6d564ad89953beb. 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/TCADQ1848119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f19ea9719f9c8a372921a5be9ba00b2ed575eee0f43cced6d564ad89953beb. 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/TCADQ1848119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60c3a0fa9eb42fee5cf34f0e5a612384f34cf67ac35a54529f8bfe023981380. 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/TCADQ1848123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba9a9dd9b7536f6c0cd1459238e61420684d7125c57c4029c3fa3ad6f532f0. 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/TCADQ1848181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a5b08c20899c237f0ebaf5c199a13934acdf657bd715fc70510bad09a1424. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA052334403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd662ee29509df16e59051798350bc45ae323bfb3d09165388582058b45e26f4. 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/PTBM11500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a36fe20108d78e4c46e225c661bb807b3175b3ddc8d848b93a06687fb7ce30e. 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/QM6P41563616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b526e0e22381e891006a6f88ab6eb3a2c57c0e017eb50c7f7695e0af8411d2. 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/FR6V81426255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe1d1f3d4ebd9d5dee2107d4bf81812af1a884725388354ca0974da083cc2c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/AOA031522633.
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 0x925d4a59fad1c1f08ce5d240a47f901e070681880ad4d42ca0da8f603fcba622. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/AOA031522638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738a6cc81cd17c4497416a64645a45f3e97b49569589721bd085e249f2b17e5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6V81466593.