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 0x08072ff9d0431020bdef779a7313a2af8226c1ffeea6a168d6c95cc005f2fd67. 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/7b24d71a-0205-4bf7-9578-943300eefb49.json and https://artists.proofprofile.net/proofs/artist/7b24d71a-0205-4bf7-9578-943300eefb49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Meio Doido e Vagabundo - O Fino do Rock Mendigo
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 0x3f128e7425f0da451d353d868ab34ecbf603f4ceb414fdce8a6c13e30771f8a0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BR1PO1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0744ffd9753386e17dca11502322250524ba64390b1265f45bef9e5980ebc30. 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/US7VG1470093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9265f44ae68b6534eed4bda3248849c80f7d56736eec328be80d87187322d5. 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/BR1PO1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12e2aea7f884eb585fecbc9a074743fdc630431f636c62a490ba25a07034199. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/BR1PO1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77c4b6a9a1457a37049b3191fdc152520f91aa5f392a153cf4fd8c6b46a8e58. 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/BR1PO1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd797ef1b9935978696dc7d7600f0c9737f97d85c4e0648b2639e23bc33ad3f67. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BR1PO1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092cc94fed9ecfdbbb57e8e9567fc2f2dc81003551e4907db20d8e2581cf6b9a. 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/BRACT0501088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429df13131dc8a6cc88716eb868148653c5b2ad9fc86d355ce1540211bc8c3bd. 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/BRACT0600741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ee77c6f2b13ac466806c9af88291d0eea4a7c3feceda7dfa64daf92a9251f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BRACT0600742.
Milésima Canção de Amor - Acústico | Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9356087a66bfc72f6c43d73a1b0d54cb323efa516c7f472de6351de7c1ab861. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRACT0600744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2006ee751cf0071e943bf7b4f10d1a1c166290877221e149f66b3ae7917327b8. 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/BRACT0600745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa565f089f3ae4f2f42e0d7fbccec995a3f29c8ee103efcaa2d3a0b44ea9ab. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRACT0600746.
Até a Hora de Parar - Acústico | Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b1fd0c26785e074660b25b6b7a46d38f3533af98d67d0fba2a38e50703c21b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:35:55Z), 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/BRACT0600748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a185e6a46088b467c9273a0a653bc579310d7e176d33f37709111d762b9d58. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:03Z), 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/BRACT0600749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d739115c6d6a11e381ac1330f2e016617e942de86d7b684ffa375287c92c623. 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/BRACT0600750.
Eu Já Sei Onde Isso Vai Dar - Acústico | Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a14b17ddb5c109b86ed39c7d627a9fc3fbacc632e50db093bccd2cda308fda7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:47:50Z), 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/BRACT0600752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ee365d012750405a23973aa90c38bc7fb1c2bbf65af7e62fa16b6f2d6c6a8. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BRACT0600753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c45c2cabbe8153f73b79a52db5c6ca9b5853a0c69faefa9d3d7c2014da2f9b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:55Z), 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/BRACT1601305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb1217d0fe798d6a329e39387b7059eafd7b74f6975bf08edc6481e34c9930. 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/BRACT1601310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333d4e24be41c9ad845d01c0750b3ec45d46f5cea5c14b22a13fdf621976202a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRACT1601315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b29160d7498075eced5c68af2d0b58d87e4eeb43fa7f5cfd43f6fd1c465bab8. 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/BRACT0300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ec8ee8449a7a490f81c8191fd22ac31e94193011c6e8b09b6b0037c9028b11. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BRACT0300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa287de2047ffde428778fc98ab7e4760990459be5c10e43d6797166189098. 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/BRACT0300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f949077f23d86b72bc17a18d48a87857bea213ff1f8f25e9d5d087bbc5541. 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/BRACT0300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f117f59a6ba3ea03f275a5db51171c5a51129bee4853cdd8c576721a2f25a1f. 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/BRACT0300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d71f3c6dc3413f4a31dcb934eb0105cc7780767bda66864753b4c0432419570. 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/BRACT0300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a900d6e956c2169fec92a74e414afce6a120c7124c9a7c81e98c40603ec4814. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BRACT0300063.
Diamantes Verdadeiros, Vol. II (With A Little Help From Our Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28878d9b84db3f0ded74cf72f261bd3a9ce053ff54430bdb068d2446b385a53f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BR1PO2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df23f5bfd27b8bdfd86418856cfb09a9a4ec0529ab003ff9fffbbdada55305a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/BR1PO2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6e104678dc31b2ddb38e08239002308e5dc073c42aa217bceefd6eaf9ce9d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BR1PO2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d55a1ad009d2a9a834cf4c33279e7fadcec415d94b023b9972a0337d48e1ee. 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/BR1PO2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b4bf0e5972d3c56c02d8e93507f26eace0c31b6ed144da4465f46cbfeda10. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BR1PO2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2455fe4e94a06306e1af3ab924f04cf1ebd235a7943899bd46d4b2726b47a47. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:03:11Z), 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/BR1PO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9140c95b4342678e7882413f02557a1750b7d255bf4e6b93b93e091eafe4b6ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ2010638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffb2bfacf6b80daf6c48f6a9acb7b8ad91814a65c7d6d5e042bfddb19a89378. 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/BRACT1603583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf0b842b7d46920bbb9e2028d29666ed7bb91ddd4aa41899867d36f5f2d948. 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/BR03D2102196.