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 0x907ce17d5425595de99a7ef6f90983bad9ed0b593a6014f28495d7267a7292cc. 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/03321078-628e-486e-8153-73cbccd7dd95.json and https://artists.proofprofile.net/proofs/artist/03321078-628e-486e-8153-73cbccd7dd95.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 0xa22a1b9fcce3426c217ee27d3d68d6e90c786c8ea08111e81d88518574b0d9c3. 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/TR6531100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc39365a0841ef37c55f907de1f3be88c63dd29b0af8a8eba709d9ad49104768. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:50:39Z), 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/TR6531100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d881eb9e265b1ebde0af296b09977e7939d3e36fd2421fc987463eb8c6d2e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR6531100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2394e7603eacf6606f30e66e9b7c26fa759328295bcacb1e8e52539c30b7fb0. 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/TRCCK2200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2071d9bd8b6586bd125bf204058b192118c1bc1aed803a1411892d2adfe770. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:25Z), 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/TRCCK2200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4e3ba0a67f4cfd6e3b6482268bdd68b5295e9891c5e30d38a65ea5cc08885. 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/TRCCK2200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03557c2fc2b82a74b6b8fcc4213a0089db2a7307c7a16847800c1d23a5875b36. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TRCCK2200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e4b8f869ab6b8d49ec226baf3e378d529bec49493c251a01a270c2ba7b41f. 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/AUBEC2157788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf9911184268a9fd45f16bb2c6744f653ef5e26c17a33c09a86f33509a97a1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TRCCK2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b24415c78db973fed2de74edc326867a086a2621bb105cd8f0595d8cca631. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:16Z), 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/TRCCK2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124126c6c540d61a098ef9526f343015f9db3587dadbd9a348eb5e6a72c65665. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:29Z), 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/TRCCK2400011.
Pirler ve Dedeler: Aşk İle Canlar Aşk İle, Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74825cf179090850a02df55ccf98678308a81fa437136f691bba2d532fa061. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TR1591603539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907f51343df0bf341e40bd2b4f098a6f1498e6f289e47fc7d7b4583c38d2a02c. 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/TRCCK2400073.