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 0xfd744a8d48c572b245874334da3326d05ae8fb097eb3f7e115564948c34491ed. 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/a7afd26c-eb45-41dd-826a-6064fde9cab2.json and https://artists.proofprofile.net/proofs/artist/a7afd26c-eb45-41dd-826a-6064fde9cab2.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 0xfbf5b08c5e1d4c9d9e8aa3331fcb2af9c3fc2f9a32573295490249d09060fd60. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:58:50Z), 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/QZHZ42086495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498a766ec443816914b475719d784210ce2f766d34352f3431ee152f2e01ee9. 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/QZHZ52025512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d45ff338d77b8bc255d69402e32f2419dd2076c6a2f9862d32cdcc1660a7ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:45Z), 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/QZHZ52025517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e27f695539bd028961c8e3ca119d6a39dba71d6b0022845d208c9aa56d5528. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHZ52025520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5cb7b616bcd5eca44ee5e8cf6949e0841bb1ae8f828fa5ee699ab9dc4fb3be. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZHZ52025521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b7b9b4d2e66ab04d9e2a2c435cd6367ec1aeca4b816a50503863203a56b898. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:51:38Z), 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/QZGLM2102897.
Higienópolis Funil (Ficamos Consagrados)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1b62147784f56d622f4e4806e5c32e2c61444d40e274db651922511d523ece. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZGLM2104087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6689e739a4a95fb1ac117017762d6fde24da5c5351fe1f5fbd159193e08811. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLM2104090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeffe310704ee7d6e6189c2e49de0adde5f60e97c3374f7912653f5057be696e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGLM2104094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf845c594477c88335d7d364201ddc4bf6be41a2a52262eada7242a92fe3a17dc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:45:45Z), 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/QZGLM2104178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7d672466cd55638d70d0c25cd9ad3749d40945836379ec37d620cbffb48245. 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/QZGLM2104181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153b92d0c4668fbf807d087dc974cd452240f6c01d42ce98b6457ce364b9da89. 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/QZHZ32159077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7196f13e3e0a43b59c72e0bde1e9028287af50e07de4f43a98bf8e8c066c37b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHZ32159095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589f554a3aa69a13b94802fd5d6b49bb3b954cc704b7b35f44ae4f74169720fe. 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/QZGLM2235956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe329df530fcb18e6ea35e6c7dd531f6fc7326bb6ba0e46c38cadb6d967f3b123. 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/QZGLM2235957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1a26251c11f6aa9c989059c3bd1c1b0d6b0f04aa5694363cfb7dc5701303b4. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/QZGLM2235959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00471d96d5d3ab98ccfe9dedbae284ef39aac3d88c20c3e81fed6ef6332cbf5. 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/QZGLM2235960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72abf8b9b711ce15ee30d3b3b18f457c74cf6b25a774109e591fad281150f99. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:39:37Z), 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/QZGLM2235972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170f3d3e9bed533c563beb601511790f9cd465bc68a3bd23c1ce9b8fc8f4d442. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZGLS2247745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99c54fe5d9fa46830b860a86b4d1fb96c70313ce5a590b316bc1ba4c19b0ce6. 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/QZGLS2247885.
Os Melhores Raps Do Festival Da Zz, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65faf0212a59d61ed8f0793bf3ebb378d02aaf6769d38d50f73adde0c72766a5. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:02:09Z), 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/QZ5AB2328677.
Os Melhores Raps do Festival da Zz, Vol. 2
25 de Agosto (No Pam de Pilar Lado B Corre da Gente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8189ea7f68f16b9a2226bc7ea45e05123a307406ea4bc73f448ff381e02aba1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZGLS2429809.
Suécia - Esperança - Tangi (Entorta o Corredor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c9f202e8530d14a9569802e59a4db1c136f04f38dedeab9e30900b2e0729f5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:20:30Z), 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/QZGLS2460854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4e7d98e7818bd67b0f530202f7d3dc40469545db2a3a37cde1556b4710536b. 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/US7VG2504706.
Iraja, Abolição, Amarelinho ( Ccip Spring Love e Vulcão )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46176d2532f571e4b54e3106a2c009f5e84a9daa59a4f972cc700d4a398da72f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJY2581416.