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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46764f49799fb7d4e99e31e391f0de96ef6059ac84b0bb77b0361e7d04f57d9. 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/f4e7c88d-2ac2-4d26-9f68-291a0890bfda.json and https://artists.proofprofile.net/proofs/artist/f4e7c88d-2ac2-4d26-9f68-291a0890bfda.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57644fce462867793ec7e4c16d83e453678a70dfbec9be7673e00db62156c1da. 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/ITZK52100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794a134cb52fb158ff580079d504b492cfdab4dd7b00d51d51348a9df2670267. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITZK52100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16dbbe69b18d5171d0f789762aa5a5ad2266ab18b5bdeea78a9bae99884b2fe. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ITZK52100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ac5d4abdc94e9e2f3f3438310f14c3780f3f92f198272123514fdb29ac02c. 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/ITZK52100456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb9a33488ec49c37fc24b069259f404ef2c26614850fe276d391934029b7781. 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/ITZK52100436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb785896be69a9165f0da303bbefdc275e7ad050575b5ecb81354db4aae45ca0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ITZK52100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283fefae1c90d5103888921cca498db9d6c68dd7408169ab0514d94676f93e0e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ITZK52100469.
Woman In Love - Stefano Albanese Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f0572d878e1f0c8ca2b13f689ac001e684f4891eb62878115433614eb747d. 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/FR59R1721139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab602dc0856e5d04630035683509ee01f381cfc2357b60730f12b82abb67f37. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITAY32100118.
Top 50 House Radio Edit Compilation (50 Best House, Deep House, Tech House Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f0572d878e1f0c8ca2b13f689ac001e684f4891eb62878115433614eb747d. 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/FR59R1721139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedccf8504aba186673bde754c3b1c826f663b930d2d11faceceaeed43f1d8a4e. 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/ITAY32100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeedd9cf91832af137b718350445c1d31757babaaa2c43fa183cc0a3968e9ea. 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/ITAY32100115.