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 0xdc841ca58579d286d690fc6e190482c4bd7322bfc2ff099833021f6b43b220b2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b77bf321-be09-4d78-aca1-46e51e213a5d.json and https://artists.proofprofile.net/proofs/artist/b77bf321-be09-4d78-aca1-46e51e213a5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Panorama do Choro Paulistano Contemporâneo, Vol. 2
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 0xa1c06c741feaf15c770a6ce55f49227fcba2904d4457c3458efefca5767c31dd. 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/BRPOU1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329bd603a5a721dc7c75d5f22bbd7377da96f6de1b74d3b4383613a320c2544b. 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/BRPOU1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46351ac7c6d7f1be02f41bcdab6e8667efa969a704746492b79cba0651c48dd8. 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/BRPOU1400054.
Jacob do Bandolim 100 Anos Sentimento & Balanço
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529466a4f9e98a14113750253d3fa2d412a1bfdd2ef4d1a57b0bcb0541d8d33a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXSVC1800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579dacca666bc5dcf398183d3cdb6ebb55ccdc351e1fac457d32d04964c05f79. 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/BXSVC1800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f95cbbdaafdcd356aba0d14d2d9745122e4155ed8eb96cb380ec4b992e5f7. 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/BXSVC1800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114040ce8466d35c950a31ebe7d47cf31d8e65a2aa21633e77f7ee59fe72fd0e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXSVC1800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc126ff790d0ccab4d3b22f8e72655dcc87998c0360d21f9f9e6cf66642f0678b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BXSVC1800501.
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 0xb5a874abf05287c1647d5f5118a0258970578534ed63f665600f7e803f172214. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BXSVC1800502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b3a7cf0128692f359f74bda34ff328bfacf14a1334acc4b9ba831d084a1eaa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BXSVC1800507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7359168de2dac6a88b3543cbad313f41814d1d781d83836ac74353dd769131e0. 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/BRPOU1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32536473d9f8d8c0f7e5254a5e4c84663b5ebbf621d916c856eece086408cce. 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/BRYAN2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad443aceec8cd63ccc8693b257ca6c4fac8e5d4ed26d07a52f564387af9200cb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRYAN2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101f51cbf9c67bcff38a8f62fcb226cd2764c24073c2f7a2d7b5de22d3f1701e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRYAN2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1924bf3d1a07bfb0d66b6867fe3853d2744e7d22327c63a28998b0b34588589. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRYAN2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb02084a8e6ca96c8a60658f1198b98e64264b337bc1a8df12d11254b132087. 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/BRYAN2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f3bd6d65fa25af378632c5304a7618ccf0ba4ba8beda8156108f92beb240ec. 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/BRTRB2307099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213d8cfcc202315f94c0d9511168e935323e088fd15f9ad82d56108a5e301108. 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/BRTRB2307100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a1c5db9f306d2ebb0841d6528c6c0c01b49483d9237dd7f59ac8567a725043. 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/BRTRB2307101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc5934981715b4594ef437e6e1db52fc67a606a5d7c6be350f0e5ded6fcc80d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRTRB2307102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70838a1bce57cbeadc19bb59b7cdcb7489b537bb618004fb35303d432493ef1f. 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/BRTRB2307105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a0cac41e3356827aba7ada7a3b4d6b7b80667d9db2c28ca0727d985c7abd29. 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/BRTRB2307107.