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 0xe7bb3b71bde630d05827ec318e2c7d6ee5d059d066e65c6bfc9e4d0ea500c6c2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05a63e85-318a-45db-9400-fbbf5689317b.json and https://artists.proofprofile.net/proofs/artist/05a63e85-318a-45db-9400-fbbf5689317b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ea46c6a021b2a5ce07e27f061a40e89d9a3df32402c84e69bdae77adbbabb4. 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/BRBMG7100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dacf361615c79005c1e1f1b9556fac53bc10bd75760c726bf981bf559e7248f. 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/BRBMG7100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffc1bff3699210bc1d194290458516051c31b81cceb2273c7ff9dfd6b12f43. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BRBMG7100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad076034fb1157f5471724fdc204e21342be3bc37eb0c7c4060c983eb5422103. 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/BRBMG7100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0fef97bd9adae614cf5ef2ca5db71d9610ee7ccd67e58ccbdb9d88f2d85c98. 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/BRBMG7100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ef15972a6b5b67fe249050c264e637a3242d5e88f848c75e66fbbc96abda1. 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/BRBMG7100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb5cc7eb8252b1f1a4cabef6345c74cde88c4948e5fd660c329eae9bffc647. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRBMG7100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a01aa7a7a064217a82d74f7b5fa9740dc619d2086aefb58289a121629957b2. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BRBMG7100056.
Desacato / Chamego de Iná (Água de Serrinha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8352911bc6e3b2e728fbd0f7462b209c46709c0575682808bb560a96a4173950. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/BRBMG1701341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caa6633cfd8fa348cb96fda14776b990e207fb75e3e70e5710f7a76b7fd9a90. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRBMG7300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9121b066e52a570ff191fc4dea9f52ddfd2f8a4217bea2514121f62ec22a1a. 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/BRBMG7300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d25ca84fa3532dd611aa66910d015ee23229f462ea8970f48dc39f76c813577. 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/BRBMG7300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfba47db578060a68134426dc7c169b9eec9e454e5db9bf8edd257dc46d0a500. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRBMG7300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd947cfbbc46d5b26b8a25c2faaf97a71082fc72d80147694ed46da29c618f4. 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/BRBMG7300198.
Um Abraço no Lucien Extensivo ao Edu (feat. Maria Creuza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016c1921d5f9ecc1e23437ac127f8756a8d8a938359c3e5adb058965ebf3ba2b. 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/BRBMG7300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c0d253a1dcb2c12e6c342dc3cebced4c96988379d26430356ff5a557375f31. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BRBMG1701342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa688bba7dbfcb74ab8147f100427d4a9f102b222366732b2a6e771a0cce08640. 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/BRBMG7400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634209e52ae95f78faf4fd717eabef6d5d0865d3257b4a99651e862e83e8ce4e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:50Z), 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/BRBMG7700190.
Acervo Especial - Antônio Carlos & Jocafi
Antonio Carlos and Jocafi Sing the Music of Jorge Amado
20 Super Sucessos Antônio Carlos e Jocafi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4ced094102af8dcf8410d9278863e3fd57c9941ed48872b43f456b9114b316. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRMAX1600490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b764fa0cef2cd8c534f17efe3ebdc4cda27b6f1c177c8aa6b817a5e5773ad6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:32:22Z), 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/BRMAX1600491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6dc85c4cae6b27a5ff9254093bbca934c6ee4eb4dc1ea3d26c0ab1413bdeb5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRMAX1600492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0664fdae116cee01df35e0ea1e627811e59f10e14e91a0e3c3784cdeec86d6b. 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/BRMAX1600503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cbfc08956d971e6c7dbeddbeaa99332d2280eb90f1bc64f56e0644872c8cab. 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/BRBMG7100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5a2ce8015e57806c24946fe701c8540383f5630ef0ff9008921452b12dd590. 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/UKU6H1950573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c534ad364a7a310533d4e526a13bef32012ac049ffff00d50d30d5c86bd77c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXF142100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd88a5020c7521802b949560ef16ae94f2f690ea13a01c78e248740df171243d. 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/BXQQ32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a26819add58e625b8be829b68ce7472f5065550de454185f542ba9c324f91ba. 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/BRLR62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459447fd1cf3c278c51eadb2e893c5617822dba06b275504dcb0173760ef6b1e. 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/BRUM71401527.
As Grandes Décadas Da Música Popular Brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ffa940c8731706b8823a3569c0237b53d9f68ef6aa66fad6c2016ccdcc3d8d. 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/BRBMG7100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4294f7dffa6aca39cf3db9db5891413c4b7795141ad24a0c21a039495055b9. 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/BXQQ32000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95fe85ad635914eaba5995fc1fb73f2d0bae82aa1bb527035f6dad9cfd01df0. 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/QMXZD1100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f44bf97aa71a4a224f90eecc925eeb3a852bbb3dacc7d5951ed1d28c4ad23e. 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/BXQQ32000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353eea59c58cce4d929dcec159cc666070c1fa0be181b819326f31a6aaea6ba1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBIY1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f8880f269094b04a6a8f8f60250646d5b02cd0f64b3c71f057dd2549bf2062. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBIY1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350d756ba8994c1f1bd49af81220601484acdb74c10a87d99b48240e9b9357c4. 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/BXBIY2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b445e4f9bfa1e4b9a9fc823555aa56f9b3b124aa5f4494d850482394fb73d7a. 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/BR3R22200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83edd5cae27d11935460c564adbd9b54b7caf720c9fe873b26976650c0b8f08. 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/BR3R22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9687ffe6fdd0d35dfc75b440bf58633d70de89dd53230fb512516627e78520f4. 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/BR3R22200003.