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 0x24937a98dbed991cafb71e11c5008d6a8a042df82fc43d03f9982940e6f56a2f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/837c6cfc-3d5f-4ef5-8560-d4d125e8aede.json and https://artists.proofprofile.net/proofs/artist/837c6cfc-3d5f-4ef5-8560-d4d125e8aede.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149767a0793e1e3f6139060c94d57aab348b0c6d506c12a503bee07cc9bb79c1. 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/BRVLX1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cfdb25c13ccce61fcb75ebcb5b3c49614cbb33d59e74c1c934e42490494f2a. 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/BRVLX1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d110d753965d9f4bc460058da8b8e44be02d6d75163808589a1fb314f4b523c. 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/BRVLX1500004.
O Que Eu Nunca VI (feat. Serafim Freitas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dd3a31740ee2a859431b363e3101721aac30ecbded0940aa32b0f71e70e380. 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/BRVLX1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86dacf1dab1edf2607e8e2f8e10dbf025a68c07fc46ec2136f9790cfa44643c. 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/BRVLX1500006.
O Milagre da Visão (feat. André Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50ee67f6f04b9911fbe0907d1720ecd4883fcbf225e9cad85666e246248ab54. 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/BRVLX1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3483480d82078e4f2fc117bffc9dc75b80ec6736ebe329fb9873bdfc11dbe8bc. 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/BRVLX1500009.
Dono do Meu Coração (feat. João Alexandre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6071d17a67554a9059658310ad505e06048fa974449a10120adc04344ef507e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRVLX1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6305c8f11feb3b864b705954245b339bb24fb762692b64a4b6d817c4ae84127d. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRVLX1500013.
Louvai (feat. Carlinhos Veiga, Gladir Cabral & João Alexandre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4a61cd4b4bf20e80bc48ea2281698771ef2cda29d4b78391989558b517b15. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRVLX1500003.
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 0x5ccdc427fb8e673d131d8bf2dcf4b854c7db362cb64daaa812e597a2d187a6dc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRVLX1500010.
A História de Zaqueu (feat. Marlene Vasquez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3ac10180a931ccbc102393b3c335312196d8e9d29cce5bbe7f414244598b0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRVLX1500012.
Ao Mestre da Música (feat. André Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39f025c2c8ac8cf479fad4442a8519e8191321dd8b3ca6c575ea37895f2559c. 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/BRVLX1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc59dd298105146e86048a8e6f96195ce1422cd311fe7f3bf1dc2ca4b30c3abf. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:25Z), 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/BRVLX1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212cdf87a9db33e217c7b0a466e6cddd8b4e274aae6e45fc281c15123f0f7ccb. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BRVLX1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5befb1f90614c2e1fcb3322bb7c898f673539c3fbac38d1988080dfea404701. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:37:04Z), 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/BRVLX2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e2aa28f21e8118062d3b2acb1a1e6c7bf8556fa24d9751026f92fad7425b99. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:13:58Z), 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/BRVLX2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df2cc1de7ebe4942f5ebc0aeef32fb5d1ab5ef476af83c84e410cdc1ce58d8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BRVLX2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77612bf9d9126781bd796b42174f8850a6c4ae852025098c1a6ba55887116d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJZ2192615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5541d3ef4c257dbcb95ab1252a007849106002748ebed2dfd6f9e1ad6005077f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRVLX2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03036d66ea922496f1fecfe7430d5bedaaa733b1ac54eca557ffcc37adc0d388. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BRVLX2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa9bea61227ad14f979958581c668780f8a5d79aa5749c5039fe1def1f7e1bd. 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/BRVLX2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96797850104ca7a3c362f9d0133ac3d93ba46a50aea1f2d95651196122c1f47. 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/BR4JO1900020.