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 0x1941b8ba41fde1b521e7953241bb301327b39e75bbea662db55b2f58b091e454. 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/2e23036f-d007-4637-b07d-743fddb88a27.json and https://artists.proofprofile.net/proofs/artist/2e23036f-d007-4637-b07d-743fddb88a27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Escola (Zé Ibarra Canta Adoniran Barbosa)
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 0xa1b9a1d640009326f1db481c70809c7c31c1f16e0f2da5d7a93eea776912b0fd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXJVB2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1de4646f4302eb2c04ed405a23a365b9845e9689b8ea2fb7bd22d006595325. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXJVB2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6337dd9190527862ccba43752657cbe4a817e4a4d6d03f45d51e0dc3372875ab. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BXJVB2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42f90f177f7b38f15f50c54bee185bcf24e2cdbccdb4e7a7dfdaceedc266ea. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXJVB2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f97f041967a5b3cb73ac5ba0f197e1dd95b52a0c356c692d485bde11fdaba9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXJVB2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72ef3891d694332ad5831d4b27475a9cc32315e96c8976f7f982e27b29233f3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BXJVB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f3b7519553693dc3df598351c41ca959961f0e5234ef92437720552508bf2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:11:12Z), 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/BXJVB2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406e10091f39aebc0fa03d97b3a3a04521887b191501265e7d9d645ded9e337. 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/QMEU32313791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c73d6d9c211a13e5ad8b42f731318a072fc2173cec754fc3e1d224434d3c8b. 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/QMEU32313792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63892ce4eba0073b1d49f8ab27a0e6ce6d3835c7b61586c02a228e12839475b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMEU32313793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa84c1d7dd6244e9fd77a0269db7fc6192cab7fbf3cd9be8ffc2b868e18e65. 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/QMEU32313794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d03e604f9fc03ed432fb75b8d5bed9f4b44c140df4c02df59dd614dbf1cae54. 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/QMEU32313795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783432cd6b067b99ebb3699b463c41e7e330354cd4493d1708627e3d748a857. 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/QMEU32313796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03f481b095db0b746e27e5ab6a9a155cba01a07ba398677597ae5418b5ef652. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QMEU32313797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5877523c3f626b5a231d3edbecd8f6454197fd5f3ca4f2cc38af18bb2e29acac. 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/QMEU32313798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b05ffd79d7c1ea0ceb36abdd0bd5778cde6538e24f261338d6be3f21ac79b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:10:13Z), 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/QMEU32313799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0330f4b76976b869bd86303d13580d4fc038e8f2d166011e78a6519c3c296117. 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/QZHZ31912100.
Primavera (Vai Chuva) [342 Amazônia ao Vivo no Circo Voador]
Primavera (Vai Chuva) (342 Amazônia ao Vivo no Circo Voador)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a515a3d7104fd489016560e970afbdc6f1797e0253308a55521c7fd79ab1106. 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/BRNS41900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9601d01c51d7cf719b9f87566988d614369cf2af7e57e01a3807d755085f1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJXT2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82cccbd95cb6c33f4b85d3d2c384c397c3838b2a7e726155842c7d2e4c0fc4e. 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/BXJXT2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd586daa86fe6e044e707d51f2afaad18ad87e89fe266b6f11f39c5ca99375078. 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/BXJXT2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa030a9d05e8702fa00ce1d0e775d7993ed401e6945a395e91d740009b3da99ec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJXT2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84b21e24161dbb2402858887e533f7a41fc65dec2db1fac9ac1b7af53d6dc21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJXT2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722ee212f4884f1a6d3e0d4fa6c2ce0c25433e8e248b2ac825c92e5ad9c07f0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXJXT2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49065dc29ce4ef9862f45484a9fae01999b521b2db500e0f42d7dda2ccfc4cb5. 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/BXJXT2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdaaed4fe828f58bb44fc01640795ba8739ef18b111f701f37a742b829eae16. 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/BXJXT2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fed12f7bc5272e5067e4d14c57d6e7921634f5b327eb5f22c7d1ed27573216. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXJXT2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf84386a8d9d21985b2f5f8ca8d6ff80f72fa60b16d1e0bd06ba3e97f63eb9d. 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/BXJXT2200012.