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 0x7db2600921c926281ae2c772aa309a711d11733e65d6d901b7d2674f80236d5d. 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/2e0d1671-1f6d-43aa-90d4-4890f63c9450.json and https://artists.proofprofile.net/proofs/artist/2e0d1671-1f6d-43aa-90d4-4890f63c9450.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 0x025562ee43cbfa63a40b5e005cc9705149f2de740e96b2abfca2788c1de4fa1d. 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/BRBMG8300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f69c11e5ec0811fe7843afb3e03ef5f5b3d89e9487c6fcaf1f812deaff443d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:10Z), 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/BRBMG8300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b9e9e8845a4f37152324de537b9639758db334ea8601ec85d59ccc469686e8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BRBMG8300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62dadf35a66b8ab9262cb8be4233a0d664e9f015aba8c0a84597fbbf774a4e. 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/BRBMG8300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79465368594e8ecfff56172a0f8efecafdb58b00ea5526fe98dc943d6bac71. 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/BRZPT0300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5935b112222bfe00d8a05b8d7f20e7ca77d30eaf412e5298e71a3b747f55ce. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BRZPT0300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ad52bd749f57095aa07651b6477ea5a4102ffbcbab8f44c30668f61163fae3. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/BRZPT0300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c26ebb15e87f66368a34059a5740d5e3a9dfcf50310ebb22f0b74fca44dc87c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/BRZPT0300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf374e6e520a9c92d1c09b483f9f53d70e9d86963472c061821231f06ce37013. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:42Z), 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/BRBG60900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc5593195e5325006970b9d7847f139cb05e2a387bce725b80886854cbd4f0e. 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/BRBG60900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24e11a5dd2b8fd85036c1c69debff1e736b2e622c02c71f62d7330b68a27cc. 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/BRBG60900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f12adb6d76a356f5c0c85107c5b7b2af6b1347ec2abf79d181a028969e93308. 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/BRUME0500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea096a502825c425eee8461be635e255ac43bc73f5eb4f7cb36391019457342. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRUME0500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1177161dc5ddd14de602c3611a64ac2f21502d232647bb5bf9a351f692400ef5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRUME0500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84af886509ad61286297427d307f57f649051e8156b3d5b0944f57714fc0663f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUME0500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951c3413d036042f008f320f8b1bbfcdbb11658f693c99bbd382a2e80ba28d56. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BRUME0500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f8c2a6b8e7d31a0a9978156ccb140d9d6fd93702ae1ce09839f87d8910d27. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUME0500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23c1d7f8ec73750035f20ccf6b3bff2cd9aa01be76e147ba6e005b15486bc7. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/BRUME0500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0297def22c862d2d7af4f920a1def7843c7611e0bfed30ee8f3ec5cbb3959f6. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:33:53Z), 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/BRUME0500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc61856bf17d240a057a05ec13d8d965955430f0672033c7d28bfa485a13ae. 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/BRUME0500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d8e55ef219530c7add0696b0cedb68cb6fd8e0de4448fe6d3f6a0a06fefbfa. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BRUME0500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3d224a8426473af0a73136c9700083ab83257aa788d7e17d1d0fb4b8ed7b74. 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/BRUME0500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1da16b30575780bd92e7ecdf0b5d0d78fed0b2184fd2efd648b55247c72da. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:55Z), 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/BRUME0500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656c28cd4266a839496b5a32d76f7581d707aa810ce79f5a83c17e1106d3e1f5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BRUME0500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100ae4cc6774efc306ba240d7313612775cbd8f3de35c4396ccf8c7f20658a96. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/BRMUG0500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0353029f369fcdb4ea19560260da104ff592475be78976cf1c041b4e1a6a0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BRMUG0500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2250db34113d6efb0ed7b01708d9250f19f4af8286cebd8c534cba3e19d12244. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRMUG0500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083f79bb34f3fd7bdffa697f04de27d960b459adb96248d9e6e22642e56e87fe. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:40Z), 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/BRMUG0500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5e74a72af024b06cf374e4252d990d972b89a16cbece815db68954d45f2b4. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/BRMUG0500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11afd10f9c09a6dbc8c42a39dd42e61636c043dd6d81cc0c4ffe80066f01a33. 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/BRDEP0300127.
Pirajá Esquina Carioca - uma Noite com a Raíz do Samba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf561235bc3d0a211529e9f234215fc412fc322ba6349b3efa8671c323670b13a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRDPA0900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792f3f8038e7236da665eabce34a4e9a85e104e085d8fe73e50ac40d13e57132. 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/BRDPA0900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5d5354ae3066fdf8d9fbb617adefb7e26830a9745fd61753868416e965573. 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/BRDPA0300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148a5e9a4724eba477b47b47e38247defdf8d31834260b87ff85fba6052d507. 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/BRZPT0100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2882391b1f1793f47e3df9f537ff2ccc2e7192a6596ff34b84bae8e1447a8494. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRESM0400116.