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 0x47ebef94ecd380f8b2f1bb529dc097b8ca2d31457d8199ac0001e8b5cd12264e. 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/5b930fce-69e2-4bfc-8492-5b60fea2a43c.json and https://artists.proofprofile.net/proofs/artist/5b930fce-69e2-4bfc-8492-5b60fea2a43c.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 0xafe032425a5048e8b76ba7b11dc19fbf46929b533d037b278b9024e63900f58a. 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/GBLV62310763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d5f0867a97a95880e9b3e1fd3d5c5e401589329120182e0a30bc0c5bc0b1a. 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/FR2X41992223.
Closer (feat. Lilly Ahlberg) - Sonny Fodera Club Mix
Closer (feat. Lilly Ahlberg) [Sonny Fodera Club Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e279e7306f7f22cb71caf5526170d970e0a9ece5d903b6c83093256a53e1631. 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/GBUM72102713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5406142e63185f5674fe259440fb4c3257acf4f49800b51f3a90a821699366. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72102319.
Closer (feat. Lilly Ahlberg) [Todd Edwards Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5406142e63185f5674fe259440fb4c3257acf4f49800b51f3a90a821699366. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBUM72102319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5406142e63185f5674fe259440fb4c3257acf4f49800b51f3a90a821699366. 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/GBUM72102319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f881639112094fb0d9658a7786fb3944f59a368b96e4fed3de51443acd6b269. 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/UK4ZF2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96106781310ee01cd871cd73892a5dc333a826ae317030c66efcdf7a943ed318. 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/DEUM72413664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c82370304ab2494b2033dd32ae1cdd5dbf0d18eaa001f17714a3a1df24be6e. 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/DEUM72500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756cb351eb26d6126552fd77c3e8d7286f355f688e032b07ba7c38d1c4daf4ec. 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/CA5KR2540799.
Closer (feat. Lilly Ahlberg) - Todd Edwards Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8262c47a686f028126fd58c41f285db259e85b36104a3f21eee9108e73eca2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBUM72103148.
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 0x5b81ee3d83a5ad4069768fc0bf32c502ef125723cf7ca3bdf8257fc58ccfa2c8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBUM72103149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1597dadd1bf4ad3480d6e57f6a31e14701e14aee2d5d1a50bbf5c572b1fef. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPB602301501.
Kontor Sports - Nonstop Powermix, 2020.04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc9d8a5dc7d5cb306dbbcd417a12b1e678f03981f8e733fe7cb47f7d6f6062f. 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/DEN062003421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca007a5f561f61efcab88fbea6741dddc99048e1cb101ebcc6a911a36d22d6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN062003231.