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 0x7cb51aab2a737ffc121bb53a3cef7fe157b9623ac074a6ed36fa61a98e7556a5. 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/c6da0a82-bedb-4006-89dc-1413be4786b0.json and https://artists.proofprofile.net/proofs/artist/c6da0a82-bedb-4006-89dc-1413be4786b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Vendedor De Caranguejo / Visite O Terreiro
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 0x68829bee10f13701023e631c42ad0f7192b68154cd21bad332de98af63bbbbf6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRBMG7300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df8c82900ab031c89b5f67e19d4837680b42197792b5462766f2159e5fa7bb. 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/BRBMG5800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3894deeab0135a93eebb2b50d0f7cd4ddc8e17bfab42822cf1fa6189df6f698e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BRBMG5800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3f3f791247ba68d93f7871e62c2a4eaeb72ca73bf4eee0af4ce11cb2611575. 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/BRBMG5800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaa1e01592402f0f565a9436ebf80a94ed7f5324e0196f3d9000cae81786485. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRBMG5800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09310f2795023cb0580121e33acd4ec1fe79d771ce7a563698da6eeb5cf0dd72. 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/BRBMG5800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc22ace91dcd8423546dbef4d79a9c3be0611daaa3c423d34d20437a9ae47dd0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BRBMG6000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a9bfbdc42d759be7e44f79541fa7c52ac673bc239ff2ba00c8be9070883801. 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/BRBMG6000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8042e02bb940a9b4437bfc002e724245efda8b614fe59f7fd070c6b2140b53. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BRBMG6000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ba01612a299d0be2402e74e9c6ade8470fb7ab528635364e336871d93819fd. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/BRBMG6000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e53f8579baff81f83bdc9198708cd8c7a0d0966b8d0535ed1c5bb32390d211. 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/BRBMG6000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a293e004f8241a4b8643c2c1485274caed03dc57f958edc18ac61aa2dc3b61. 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/BRBMG6200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2bc8f766d763b95a03878a1ecf897b6581211f888822fae914e93eaa946ef. 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/BRBMG6200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba34a4bb1cbaacafc1609821b091b2b904a336a13c571bf45565d30bd7030439. 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/BRBMG6300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a06df697758a04d50209b3147bc2e79ef06a0fbfc836d4b264197c53dca672. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/BRBMG6300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fdbca9599402a71f79859f38cd3ed27c91f4f56f625541b52c485ae790ed97. 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/BRBMG6500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec10266be44456a3aeb9295d507a2b00f81ac1dc3ad8365320398a51e70484. 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/US7VG1695204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bb851c7020786c3b98feaec736471bd9ed7f90c167c66eb3a2d81e1a0ba49b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEQU2039448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b1f4556d768a9c309cc7b790ff80c79d90a022e81151d857a974f81e3962eb. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BRMVP0600476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c92e8b4d39e2b476382ba0f52c588a453e37a1046a4d5046b0b25386687aa91. 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/BRBMG6600121.