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 0xb62275ab85e16bde2e0a15d6e9e8a3f55810b90a157f9601a2be4a881f6a99af. 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/a1143c07-be49-4097-9b9c-f2761bfac57d.json and https://artists.proofprofile.net/proofs/artist/a1143c07-be49-4097-9b9c-f2761bfac57d.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 0x79879a03f3d00ddef1e0dc84b33383f9cf91b4b6675f0cd5a0ca0551a2461b5c. 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/QZGLM1997428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17e947c17844c0a3ab1807f5a281564ca3fecd6108b447b50f299bcfcc61370. 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/QZGLM1997429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa42e6ea0cd3200186c2b2342570af221db731795d6689acfadcb643f702d0c. 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/QZGLM1997430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d46857ba1711edf19eead3f4918ef33e2be6b004fbb4063c1cc0c9e6767f590. 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/QZGLM1997431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531a822dce517d51eeb8041ea9440c6f76272885bb10050f37c93ff01e0bf10d. 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/QZGLM1997432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722000ee91bcf2c63af353894256d7942ef1753af5bad9e89eb5088c590c3df8. 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/QZGLM1997433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb58be4ee49adf3e69e7b3cfed58344f251a2fcace50b953d283375fd852c49. 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/QZGLM1997434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7643cdb8166797755bbdf1499313c5cae8ed2e6a0b6c5cfa3f233c47e42d2f8b. 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/QZGLM1997435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5584259d5e0846c5f1c8162d649d54e15bbe65c3f7bbf839811a4f7d80667b4. 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/QZGLM1997436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e082e8fe0319955ac61c66736a6ece2292b4e3ae21816cf272096ec1c513d2. 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/QZGLM1997437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba838e7b77da06d0b5c4e22635369c6ab5fdde350f236439aed1c46a4934087c. 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/QZGLM1997438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bc4514dc19c213b64ee5041bf7b3916c8c95e88f2643bc83c80c87f546b23b. 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/QZGLM1997439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b86c90bcc7e8727cda99d81869fd34f6995f5aee11114eb8f5855a995b195d5. 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/QZGLM1997440.
25 Sucessos: Os Reis do Chamamé (Homenagem a Zé Correia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370228db937559e26ba0af8d89dd1329f3fbc36f1f0b2ef98e5e3a1c447d416d. 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/BRBGC0600377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83daec69858e85d13fe8df91af6408f2010584ebe01f916d9153bfbebc24ef8. 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/BRBGC0600385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd534479813f9a3b4c4145ea1be8959c0a8be7f427bd39ede2e3f0e2c34c6481. 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/BRBGC0600505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77afa52f71921b9844d9de0d4eb6eaecbe095f11086a340e3c048ed1c136ba34. 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/BRBGC0600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59513a9646cff1f968fe3cde91b2c70efb5ee08acce1b59a1e523de499989d56. 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/BRBGC0600378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab5344724465b0bb321a8f7a74799455464b80c0c9596d688ba86a5cad830b. 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/BRBGC0600511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcade9b1af284e88f51a64e2ac025b8e0ac27a602176f978cb51caca126e34bbd. 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/BRBGC0700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b19b2b1236b4c879efc2e7503b8e859ce6b2d9e1e2f569e1452a0d406787cc7. 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/BRBGC0700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525a92e39debf77266d96cafa2c7b180eed2fe08f48520c67200a043a5b1d3d8. 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/BRBGC0600507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b5baedb1d701e0ae45a37c4dd5851447821914b3fcfb19f79d10c92fd6549a. 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/BRBGC0600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b23f8db5d9bccc310ed191132548051ace459d1e1d2187a27db452610780c6. 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/BRBGC0600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4589c11350c470fbb5b515c735390301f2359ad19fd5a8c9330530d4f3011f14. 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/BRBGC0700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b51af9b925272625a3a70a8d595d9e3d8838edb770ed2f7ad35cbb723cb6f. 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/BRBGC0600509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5789a2304731caf95a8895e1aaf6cdeabd84f5a840523d1028715df6e14b4424. 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/BRBGC0600365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd025bbc1c6d10b701cecc95164c1f0a4a2510580ff5fc0da95226ab24db54b. 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/BRBGC0700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15953dfe56383b8e0f3cca48cc3b93ba7a636994e1f167e7e08152b3c5ace549. 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/BRBGC0700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81d2568fb582c4af472efac27b8906c31e171a1fd0d450549292530f21de6b. 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/FR6V82465724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5446db926b6c67e9405a8198c62de1aeb256e2e71d8e4976336182338fa6c8cc. 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/BRBGC0700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff9bfcc5c3f5a3feaa298ad19eaddbe81844ab61b1fce67695586e902b48cb. 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/BRBGC0600523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23123c8f4c4680be953d4fad223200b8c461eb366d1e9c8a6c0c0bd2341b6255. 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/BRBGC0700034.
25 Sucessos, Sanfonas & Sanfoneiros: Mario Zan & Seus Amigos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22001ae40a1433a5413c9e7b04e570aa76b022b6bf7b643e99648c18192ac2a3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRBGC0601210.
25 Sucessos: Os Reis Do Chamamé (Homenagem a ze Correia)
Pantanal: Nascentes, Rios e Vertentes 50 Anos