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 0xe18b8bb9c582c59d28b9ec093f74e49e868a388c859cf508bb41c01b36a3316d. 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/8a4882a6-c9c1-4bca-8614-c227dc71c0a6.json and https://artists.proofprofile.net/proofs/artist/8a4882a6-c9c1-4bca-8614-c227dc71c0a6.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 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 0xca847496a32640f57fba12ae536cc62f93cc8fd6ab6135d694fe671f2ad11109. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZNWU2049987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24ef1fba8f84212f53e8c07929aab749bf205d2be1f3e6c4e4f23921f8432d8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWU2049988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116e1b1983cbde6676ef2294ba98e5022ddb56320dc226aec84e32bd67aa5ae3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWU2049991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5344e51be1e7c038f7ad3548b267cf3fd1ecaa04b1396b23fca09328d85c1cca. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNWY2023526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212cbdb591644189b9b3dae2b8fe09eb4406714930edd19022c61a94ebb5f939. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNWY2023532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbf18bcee30207c1cac5afe93b02ee66a9bdd67db2cdb7fd1312ac853e9bf70. 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/QZNWY2023536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963d826e1a060cdffccfc23beba16c7d964787091cde53a5b2a5c666fbf25ecd. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZK6P2224722.
Espíritos Livres numa Ditadura Monetária
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6bf495d2c0fe2301c601867c022594b46f83efa1a8a601a51575c0f14ecc08. 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/QZMEP2476535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005c9c0388808d3f9a95132cc1cee2ca6cdb4575a080e86d7b13bb603ea61d6. 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/QZMEP2476536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f1245f76e63b6460531d5d773686c87fd3480deab87beac8e8591c1d35d226. 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/QZMEP2476537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbfdebd3cb5d4cc56472c9048f1dd3cfb158e2c472b5cf1a89d267613ffce19. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZMEP2476538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17edd4d2a0c387f6a2897b07af3c3616e7ea15fdf4a8b9c49824e6eab0e8b491. 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/QZMEP2476539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac3e22b22b0fb52c21f44309aba864554279fe958d7e38a0de3395643e36d2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZMEP2476540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c97735d387b3e8bacfc7f9fe02db40cd1ea3073900596eb274996e98abb58. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZMEP2476547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8133860ace2844fd569dddfdd76b66efb87a97ddf08f0b2b1e91d222a4a60bf. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZMEP2476548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902631aed7f90f31d1733d39f76792b8347f680546eb68ef691d2ca2d2d49d56. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZK6M2543822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573293be13c84ecee116b06a57494311be151e1339918ff256ab61b300e6247c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M2543823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef9fbd5f871653ce261aca768dacaca86ed28bd94a406e17e6192c0c7184af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6M2543824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38952c49efecc0f8ee80e68d6de55aab8375b95b82e01c012aa0d7cd1000a3d8. 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/QZK6M2543825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf558743999751a1ca416a5d0b6de077955b15e292cdffdc402e1e998e8a4c9d2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6M2543827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1821745faa8e78642bf2319edd0307e25246276228b382c832c306ee92de0b02. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M2543828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cae197914124aa1b23d350e7cdd8f634d57de1c5d95dc208d8fd578388e9ce. 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/QZK6M2543829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc056a89a095c058cfb87ea263e89dd1c450120ad39f13fa639f164c02700688e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6M2543830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7450e2253a7704e9457daeeadcc6fb170e5817b4164d93c6ba6fb917b33e4863. 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/QZK6M2543831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebc4e8970907b807e0344aad1214785ec28b9baad11f44eec0356ec26d03dab. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6M2543833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba17e6128a40da44c5ca2a2b5760b6c0dc74b2276545d0dc58ee097e1c267d6d. 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/QZK6M2543835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3df6a9014b39d6c078a7a8a74e5a68238bb8e18bebb073cb2545e6fb3034a4a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6M2543836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde758e0e69d9d16a71499216f4804984e81c15aa58c1a593206d0592c7081640. 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/QZK6M2543837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74262576f9d8dd9d74178f35a6102dd46b311a9504311fc37de00f1c438653c0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6M2543838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964ff43d38c466f73eb0e52af79e37fd60717d9f5f2136ca29fb739422c5af4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZK6M2543840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb00c7c5a77cc23495d2d74b33b25ccd0a5aede47a9cb7f87a6e09012bbd4bf. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZK6M2543845.
Ao vivo no Museu da Água (Lume Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b289c78d609ad5f8da05a6775690c0cf44cea99debb67306b48846f7684840. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTB22580427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2362c383afd5abaa995a2a9e3f2f9258ed2b50b207ed145d185ee4c32e79f332. 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/QZTB22580428.
A descair para o canto inferior direito - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0ef428f0ffe95eb701dd6fe4581effdeb2b2f50146d9f8c7ccd8831f73735. 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/QZTB22580429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf0a114aaffeb64959bee7b3bad176b380e8a4f01cbe277b9fbda455f28741. 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/QZTB22580431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fafe895f714d8219a823761d443645641c093c7be82cd0e153875361fe6a04. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ7T2519394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a31e3a8f6d2e1250f19de4c2ced1efdf1063b285acf16b6e5945c023f5441d. 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/QZK6M2380940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf16d8c89db67b6d16d00875fc859a16b4d8f07cf80d0c09672fe5721795c693. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZK6Q2321203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edcc095495026653fa69dbc145e5308bb6589e49238f5fdbfe188ff6923a3ba. 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/QZK6M2334236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae285d411a9bc0cd49bc10686d7ceb45c09b5acd244627fd82ccd15890bfcf8. 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/QZFYZ2322055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c20bfe0411985324bfaf27f7acca42bb11082d037e51beca3abb0c06255d10. 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/DEH742431137.