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 0x816e8ce8ccbfb7c9c2667beb8ea7871b12fd7136a575fbb57ff9887b1d79dcc7. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97c0e605-7ae2-4092-bd80-a86c047d7347.json and https://artists.proofprofile.net/proofs/artist/97c0e605-7ae2-4092-bd80-a86c047d7347.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elegia: Virtuoso Guitar Music from Brasil
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 0xa10d5e142f94bff2fc7e8e6c61408959e1abbc0732fe189479bb36d1c5bb8f29. 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/NLA460611063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e9e88fa5f944e29d0ed23880372040cac5992732b68eec1b982877c4a32cd5. 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/NLA460611065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12f3274d53181d5a0a96e953abf7d8b805a91d15654ad29e4e86d0263e3da3. 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/NLA460611067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aae938ca06b79627b7284b954ecd3762e6770f392085df81f544d68605785c7. 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/NLA460611068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f8e9200f9a6a7e6aa9d7a01ecc5ed895047f90833315253aabd46ff75aebad. 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/NLA460611069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ce7864698641bdfd825a1c012215232051754d606a97bb828254a98cb9985. 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/NLA460611072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f756ab737c4252f229be56f3d8ea987c666ca500c65eb362ae68ee2d2072e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLA460611073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926aee80286256658590f89581099566b2e3885a091da1633ff2272756547464. 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/BR19C1600472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3435890f367c1428dbbc06949c9cb97cefce81c02bf9b193ba06658854c5b. 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/BR19C1600473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c65ece2854d3292486c7de78e155af33c8f694c6720909dd551d86e689370b. 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/BR19C1600477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e366b1b421000b8a66630c239b2232a3d8f8d94f34bc71e96afc89640a28c8. 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/BR19C1600479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaccb2c8f3ae03b73aeee8fd903e699cb0d2ed8f052b35546ecc74eed25f342f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BR19C1600476.
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
Pisando Em Brasa / Asa Branca / Vassourinhas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccd311a8ac71ea3dafd29a18da43d0c3136cca0ae70422c79061c712c0df079. 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/BRKUA9311401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9110b7b9bea9598ac2fa4f08b0141c877faa23dfc6f51d81549e0f178bcfb. 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/BRKUA9311411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca502a2deb8e026f4f716804f6d4d9bf972a4ce84a3dda50e948d4855014d1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRKUA9311403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fcdd69b22ce4681001468fe33a7e0cd0d89cabfdf8b16e79b5478bcd8ef223. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRKUA9311404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0ba2afe6ade90a3f29eb0c994a4e3d3a44102eb92ce135400ed4c4efba4f6. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BRKUA9311410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b164a393ecc0379d4c049c878bcfb1656c9862918091bcf160f31e0fa9a35e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BRKUA9311412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441771be99ce91c6603f32fd4eb33da97f00e42695e776fd5aec646988e11cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BREMI0300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14880f3f438a11be34d7464dd97479b4ee2913bdbf7012a3c6dad1e1fad47b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BREMI0300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5dc8b676284ca066882e8105faffe8ebd0692deba40894d214d5263d33eb4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BREMI0300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c26c661556db35a2d798d8eac157ca7240434381176566d9bafb2f2e718e32. 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/BREMI0300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61682f02d7ae280532ba003e6c9c13f6dae30488c9aafcd8e6ffdfa0f9ad5935. 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/BREMI0300458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1839ea83c488f05c413b53954ba41923b12144165a9506f97244f41271439d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BREMI0300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bed342c4e89420fedec8f8f6059643635dee4aba6a0ffbe7b3da0f14a8908d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BREMI0300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefe48a537e56c8f63fced7fe8b6cc427845be826f6abc74bd9871a79f272552. 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/BREMI0300463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e20b6f9fc628e739f4c771fd16cb9c3aff1af4881460667f6690abab55a07d. 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/BREMI0300464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611bb806bdf6dfc0e4236852027ccd40ee601d9f007b7cb12a673fcd5b07852. 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/BREMI0300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5735e3b7cb4b3cb00cbd77d74f6598e9a11d9779dd20f90c88dc096140efae. 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/BREMI0300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c2704e79a8c1b728597a5b7ad3e9c06a94cbf965e1292af0ebfc96d8116c99. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/BREMI0300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896fe69d2e17276d868898426efc75e900d902ceb1f5f19156f663b74645c2ca. 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/FR6V81768665.
Tristezas de um Violao / Duas Contas / Gente Humilde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206faf30202ad29a4c1f1e1ae5d00d0dc73a6ceaf458436e449682e4087a987. 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/FR6V81768687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2de981674e80e67d0317596b71ad197f5a2402f3755eca1dfb01356d23f5e2. 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/FR6V81768699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5699f7bb4d61f0ac672a3b5e3480b5552cc0cd082c985c769bb674c4adfe787b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR6V81768693.
Forró, Verso e Viola (O Embaixador do Forró)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6ec5064e9398a493ae9e45c70e0a4323a983ca586b0f90fc5f852479b645d. 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/BRMAX1402816.