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 0x2cc26e14cb4afc17510e73d4e32a75bf322fad67358076a31e1552f054163396. 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/426d2173-210e-40b2-90f9-e75ac91a2864.json and https://artists.proofprofile.net/proofs/artist/426d2173-210e-40b2-90f9-e75ac91a2864.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 0x7ab77156d1ab67aa13f8e56cef7ee71dba13a5d1e207c5369fc61cd104ace5cf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHZ31997143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a659751eb68e47d95d8ab9cb27ad262a8ff85df33a504da72266a0f2b1112. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHZ31997144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7207509b6d694805d260c4a53eb0ea08076f2ef19c45b8b353ff990354697. 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/QZHZ31997145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e3cf08a328bff9e5a35127f9d73218b98cc1bc630e6a1f5e0dd3cf79f9db78. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:02Z), 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/QZHZ31997151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf589378feb2333ff1b13c7a5e75ceb02a3928348abf942b6e1d931ad1cb6a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:24Z), 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/BXKXM2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba682100a391c6e6919b17634d4d93d2732c5fd61e9ff69268c2cca67610ebb. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZ5AB1982605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91c2ed051c44db31f136421e4e873ee9b50fda2b4bf55f42a85433ba8395ff9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZ5AB1982606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e229a28d32802031b07ff0a19abf4e979d84596a7277e5bdecefa2d6b174d23. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ5AB1982608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c1b219d7c11cb21a936f1021317477c93930325bbe98d2f1cba680b07d424d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZ5AB1982609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf63277234fca434a90f89a6b9b1963511c78593c22dc57c4e63a9adf3c3b75a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZ5AB1982611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad040f81bcecbe6ceed6ddc50972084c1ad4227c3a9e29dede9c8681cea97ac. 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/QZ5AB1982614.
Maria Porta do Céu: Maria Passa na Frente (Ao Vivo)
Maria Porta do Céu: Maria Passa na Frente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1edbf37dd436c65c0cbdb7179e59e28ced9ba6a1022cbb191be18ea95a1a77. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:23Z), 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/BXKXM2100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc097dbf561624a956dba6af9238c73890094b4d51101804bf34884b2520e90. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BXKXM2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd43a509dc4dbc31067d6f8c97ce6d0ce6b36981c06127a809f1afea807b429e. 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/BXKXM2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67b88d8a6405438ad3d4fb194c7cb14ac92ea805122ec9420311060cce4590f. 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/BXKXM2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41ef9fea56a9f9f6730247223c4c5e84f5ef390916331d4e3f30576c81f13d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BXKXM2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc097dbf561624a956dba6af9238c73890094b4d51101804bf34884b2520e90. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BXKXM2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c7ca43b433c8be0e1716d9b825734720502db75abaf3b86d98cfaa2ea973e. 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/BXKXM2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b45a4109a3ee8fcfbf7c25197ddd39303adcf51378aac5f46dc1c7181c1e556. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXKXM2300034.