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 0x0756f7d9d069d1ca7300dce9d5e9eeebe8cfbf8a75b09c762dc311bf8c9b6f2d. 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/ad982258-7d70-4e90-9eae-45316f69ac8b.json and https://artists.proofprofile.net/proofs/artist/ad982258-7d70-4e90-9eae-45316f69ac8b.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 0x3442003680503a7c824a242b0175185e1fe9d4501866355efc3c1d7c02af2617. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/BRPGD7500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe659297ab03bcfb2dee0083ff5bee884525e513ba4571ef73f9827f18ea368c5. 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/BRPGD7500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc025c3fcebf4224a92d50bab58cb23a16d3c0ae48759a118b78f1df950a386. 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/BRPGD7500006.
Guitarras, Violinos E Instrumentos De Samba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e488a3013d81f03cd973a66b8568146b34e1aad4fad99aa6470f3015bc352f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRPGD7500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf89c96ca0b7d43456ad08faa9b5b09c6ca8a140adeaeaba658d847a967af1b. 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/BRPGD7500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bada208ff155c6da80566d26b67170ceece460dbbcc9c66dc8b80975e22709. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRMCA7500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53027a535463ce8d4360874f633a74cec3f4f6a52f54f758f5d7308332df1c2c. 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/BRMCA7500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3442003680503a7c824a242b0175185e1fe9d4501866355efc3c1d7c02af2617. 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/BRPGD7500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba93fd9dee35866b07e798ed5ae1bc7ac2b7eda5cf6e335b9ed50d4bdcdfedd. 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/BRMCA7500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9bcf177ba6a0e5bea3072600bd2f55c7f255772fe4c2c52703cfb03eeeaaa0. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/BRMCA7500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe659297ab03bcfb2dee0083ff5bee884525e513ba4571ef73f9827f18ea368c5. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BRPGD7500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b42c6255a81158590eb285dfd0e96974b5dd9e4cb3300850519ff95f71de5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BRPGD7500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc025c3fcebf4224a92d50bab58cb23a16d3c0ae48759a118b78f1df950a386. 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/BRPGD7500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201c35dbbd91a05f66623a8268eac7b4ebdd789846076cab9c8b874848b91732. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BRPGD7500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf1bc1e10d6f2abd957c6dab933ea20385bc60b21aff2f03c517144ca5b57f. 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/BRUM70500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4eb5a6f72725424683ec400388ebfcce452d8a5ae969c34e272df7a5fa9ad. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/BRMCA7600135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e05d019e0de4073389daf8ce702b0d3a72536d5e22d8f68331014996783c0e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BRMCA0100413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390b2aa658a3946eb74dd232c5c8376205f29d0c2e381ad2be1ebcc6f1802349. 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/BRHYH8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe263cf0afc8dd0337850977d8e1d2fb36fa232aef50c0f8f3d8c875d08f33775. 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/BRHYH8100002.
Na Rua, Na Chuva, Na Fazenda (Edição Especial De 30 Anos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccf62137b6ab0dd8da22937b66d623c6ecdddf8bf9bff343c2c415fbdfc969d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BRDDY0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc6d68f13884e36239f89d88d63264369197bdb69a586809e3582067af45eff. 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/BRDYY2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2732f73875260b1ad2e134766735e92b67a7af3a56080c8e67965ef035a69d91. 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/BRDDY2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc6d68f13884e36239f89d88d63264369197bdb69a586809e3582067af45eff. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRDYY2100004.
Na Rua, na Chuva, na Fazenda (Casinha de Sapê) [Ao Vivo 1980]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36528178f3d47b7d3c0127e67ae55ddca8ba53cceb8d0cfdb22770c0d8340e70. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BRDYY2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd766e2edd1993a5c4ae506a0cdaca867f1e89d4a3fca1f6389420f3be8bd4. 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/QM9K31201711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dab0193214bfd428035533e8f87f9b540e35d19c918dbcc9bcaa591cc74011. 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/QM9K31201666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e4845954b2dad4ac2ff03f06e5b5ffaea2c6bbc41fae6cde1e56b119d89161. 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/QM9K31201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ce4ac2d13cf751f039a2dd12eb72c6dd57bcb335e270769cc726b6ecbdd1e8. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QM9K31201669.
Três Éguas, um Jumento e uma Vaca (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975adf1456c7f2150d96c2229abb41229948661671dad418fa1bdb4c1f7bc154. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB1639725.
In da City (feat. Dynasty, Nature e Hyldon & DJ Chubby Chub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95568eaa1461abeab15982e245726565ea3e8b9a704dbaeec4826e1ba07c5244. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BR5TG1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc1556d5cb6f335931dac6546aff89d76d625d089816d17a01221ed30f1fc79. 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/BRWMB1100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68809e6bc8ddcab69fb4ca12c3573ddbdb1d2451f11f4390747f2aa6925857c0. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBDCR1400062.
20 Anos da Sicam - ao Vivo na Arena Anhembi 1980
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dda49e3f6050a9a5350bd13367ba593550535cba845872ee185fa89354668b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXCPT1900005.
Na Rua, na Chuva, na Fazenda (Casinha de Sapê)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab82a6a5d5892ab389e293338f3bc5838dc0279052e9038e1dac75c0649a03e. 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/BXCPT1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5992fc5f3efd855e9df4e57a9690c3427bfab2d7db2595545141b0720c27258. 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/BXCPT1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf1bc1e10d6f2abd957c6dab933ea20385bc60b21aff2f03c517144ca5b57f. 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/BRUM70500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d06f30a94295676b7d6dc26793e397d7ab4ef4522ff0e14c2aea71edc1c72f3. 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/BRCZ82200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957a3c8e71f2db992efa13f7eb81907087cf050abb6b7cc92585226510a4c719. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BRTRB2202263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd766e2edd1993a5c4ae506a0cdaca867f1e89d4a3fca1f6389420f3be8bd4. 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/QM9K31201711.