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 0xa5ec28a6f570e051e0c8d8e84a5af0fb0e3a92be75024da32992d687c704eac8. 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/02006184-924a-488d-a537-cd8eab3ada9b.json and https://artists.proofprofile.net/proofs/artist/02006184-924a-488d-a537-cd8eab3ada9b.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 0x9ee0eb541ca213fc5775fac0f18ab7d18662af9487df0668854d2acbfbac5f19. 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/GB8KE1850236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd97e46165ab41dfc6cfbe06ed82864f4a5b6b61da7389b1d0bf130c712687a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE1850239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f8dd64dfac94f26f686606da08eabc3e0266c7ed7aedf76b3f93d481c78739. 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/FR59R2049778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549743acba6b4a10bfff483efc7b518c91f24767fbddd1d281f20a71698164fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX762135907.
Foreigners (Sam Krats Remix Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc0c278f9599ec6819ec03ef3b68636c02b70ebff040c778ab73bbcb47eb0b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBVW21600001.
Roll at Dawn (feat. Jack Jetson, Bva, Smellington Piff, Oab & Leaf Dog)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247d93c903ce17ee0bb84a51dcd7615117d0ac27ac1ed70b9a8fb93bab14cfe7. 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/GBVW21600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7b4d5ecac6c55bf4e38150df7154cf840d8fa2e212200b3bc51a345b15be6d. 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/GBVW21600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb751537a835740bb1c1b07034c7bbdd2eecd3525af1c7c8f8c09d0ad9b1ece. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:04Z), 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/GBVW21600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5decd64ba8847e23c61fbbb80c48a58c5983ec312f9e3549e2c9093abed2eaaf. 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/GBVW21600007.
Adventures of Shroomlock & Dropsome (feat. DJ Merk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dff1529f5afdd16237c50fb616798f71070638ea2c031c8f562dd83ffe22bda. 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/GBVW21600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa5f0d71b1e2f05c0b669b9860750ab34e3e75854cb0c2ae5b24988252603f6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:23Z), 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/GBVW21600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89759afb3cdb528a621e36eb39a73bff1ad840992fdeb8063fe69cc90a823a. 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/GBVW21600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f85e520bc6d1fcd1571370bf7ad289c533c36ec6228211e61b84f2c7395566d. 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/GBVW21800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd712cf9bba8fdfb6208e96c36ae7a6ec305bc8548eaf7e22a88c5412d100efef. 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/GBVW21800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232eef9ed21a059b3030d417c6a9be49ace461c8dbd6038e63c7b8e48b4439b8. 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/GBVW21800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5742f5aaf8e509228a96c236308fd6f7a741064e282a8c457115d67a639aae1c. 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/GBVW21800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28985b0cc5f5c4c8fc8d7a7ba95c8e353cba056a386732cccd4818310088b06a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBVW21800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a62f45cb342235b1e56c16af8a28e3b15d1c9eba811043b778b3c1fafcd898. 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/GBVW21800010.