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 0xf63318a1096566976f7c5c0a22f0e3fabb1c30cc67cb81bf241c6eb75238df2a. 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/3ae46c49-7814-4386-b574-e504fc8c25c9.json and https://artists.proofprofile.net/proofs/artist/3ae46c49-7814-4386-b574-e504fc8c25c9.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 0x0d992a3fed4a064df8382b373c00dad9c6bc7bd2440d857c677e4d4e98f982cc. 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/BCFCV2200216.
Desce Gostoso Batendo o Bumbum (Eletrofunk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9357217c605c55362b39740b9ba55e0a0788b59dd23a7a58441d8ade2145373. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BKWDJ2307813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ed651489590670732df2ac7ac1d5de8c8094281a61fb2290b1ae8378c6d7e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:18:40Z), 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/BKSAI2300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d660dd7d1219cf222f1e65eb20e17757751883694058d1991b9b5664070f8b. 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/BCFCV2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3952abd5243aefaaf870a56d92e2a634b97625ecbd0fa84c81158b7d2d7611. 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/QZMZ92442719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85e391b210310d7d23ef3d1391086e848cb89e262128d148e32195fcb26d3f. 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/BKSAI2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd719b4235409114654a78f5fc287fc3ad6288e419c439ab3a19209e6099d47. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BKWDJ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a5d2c84dc3d1605f85d39b8503c5fc012db3d7190b716eddd5e1751745018. 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/BKWDJ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a2c2486817b88465b3cfe328860fff23658c54845e901e0277d638f3c5477. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BKGMM2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85940f4b8eba0a8a63267872b9d6db1ff9b78d002b840fdd39cfb106e2a23a79. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BKWDJ2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198b3c83d2abeed15f27e762b15d08b654c0d3fe236729280451b8095a712a8b. 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/BKWDJ2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822acd269a3a77bf55b31fdd13966f48bb71da675ba2296b3f4483960fcb920e. 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/BKWDJ2500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e604f5ca2cae3fcd148333361689acb8d82bf2ac28b6f212c847ac17f2e3e. 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/US3DF2405506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912b4bd0ab61b54fb34aa539dbf9eca4ff620ac4dbc054eb252a98b8919886e. 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/GXBAV2489901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d8374ed2e3a1133d7aa095d53bed89f686aabe4a1280fc2095a5cd1c710fe7. 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/BRTRB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e300c4b7d92775fcbefe0ec5f6a2028f5329f778cc38098603fd20c2f6bad4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BCNDT2400006.
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