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 0x145a9dfe1b1b792ddfbe1461d1d63abedf1fc1e2dad0efd3d3102d436aa3eee3. 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/fb90f02e-3ffe-4684-ac0a-b9aa9aeb8db2.json and https://artists.proofprofile.net/proofs/artist/fb90f02e-3ffe-4684-ac0a-b9aa9aeb8db2.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 0x2778e63585807d634fb0c63f90f8a6acfd53f796da0817111e3c50af056bc75e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BX4IU2315359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2cc1bf710bed282f10a286798cb9414258d1a50ee1bee7b8aaf138bcb70f7a. 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/SGB502259746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fff2f3c50e974da71185f6f56c2c9f79b1c71ba85eb0c4ec65d6a1a61c0a54. 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/SGW502314962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6d1177654289c3d957596bbc90503ab5697d468ee05c0c94df3953dbe37f75. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/BX4IU2342907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a21ccdced6395bd02ab20a378b7810256049799e135e1d58abc573ef6c895ad. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/BX4IU2359860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd181c75a4d3d0db000847b22ddb7ff905a3405e521c1d76c5870589bd5da9fbd. 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/BX4IU2401719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b50337ae5cd8cd4238425718854a4957c341b165d31f16087599da2932c989. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BX4IU2402546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d18c7826ba9b37725e2c2b19155a4b4c14581f0e8f88b088bad798728a0ceb. 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/BX4IU2406627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ffb13d31bc72409d7c01848dd7ec7e94d59bbd79b26df0275ba982a61121bc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BX4IU2406631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8e4a12bd8d4426d872725c301859895de8b230e319f75ad7be175517701f64. 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/BX4IU2406632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dad038a39e0146e768944a29654dee3ac9e47aa77d6cc5dfbff6fcc8129f72f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GXD7V2258421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35383610713823905a1dc1ac405005108a8a00b52e5ae05a841d85933b50adb5. 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/GXD7V2226369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a8ab1725651a313bf2d0a957fc637fd164f6f5612ad9153bb4426441024f93. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BX4IU2414235.
TA CHAPADA DE BALINHA VS TROPA DOS COVARDES
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c95006575b3313ed6dd7e255015a6278859f34cd2e41d8e11e2f7659d7eb44. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BX4IU2418315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cadf767c987a17ff781b809c0591b51f88991155f62c518cc781e3c0c11060. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXD7G2214933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3e72ffcdc9eccf179f6916409296611eba5baffb5fb7d5e40758218322757. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GXD7G2203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99ef114247ca6cfeee6b86e85025e180a6485dfd0fbd8080d7516a8e9953ce5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GXD7G2216602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435368df2d923398ca4fa6a122cdcff61e6f99dec74a0130885e00e07df4542b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/SGB502581518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf042a9401205df782b174f5e79bf92e28003038d30bed5d39199bb61ca169e8. 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/GXBAV2501634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cc3b2ed252c032843a444578cc76863e381f29f6ea4d0b34b1cebefc484778. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AEA3A2187973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13d086cb689a7e32ab37cd31986fa1587aec64653fe0a00478b0428623acfd8. 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/GXBAV2114435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a972dff5dad6446d7687b16e9b80635e1f815e2f241ec1553cb0184501a3519. 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/BX4IU2517094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ae5a07c895a357af2f3644378eacdca6f106e9a8358297aa47ab575c4e054. 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/QT5M32595728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631714f1826a66640b79271a06d3b82658a8073d33f0a56b3d45a209e604efa6. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QT5M42521215.