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 0x23ed473da1a62276d7af649da245c62729f7a9be6f260e623a31dddaebcabb9a. 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/f4c4f35b-2142-4d45-a1d5-819ea17ca087.json and https://artists.proofprofile.net/proofs/artist/f4c4f35b-2142-4d45-a1d5-819ea17ca087.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 0x69b703b4167680314d61f9f26287f0819541044bd631713e84c4c30908823e33. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1654679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39be599da146394a708c203d95b56602e9f57f15a2502afe325387e9a98f60ca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR10S1654685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e9b67734bdfd4002daf62bde304a1604efa1fb31485b19fe410e9c11f12240. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK94X1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31636193b330bf5901796ced6c06645407d54b579681709ad8b108aa3d126c9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRX201785776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a538e2e26378fb6f8bfcc7eaa0a9813737871fd3c218a84c45870593e90bbc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201785777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d530655c5e2f8592cc3cd94e123e0695792fc38c0eb0b7da8ab71f491e721e9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX201785778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd4af22764d6f8ad86ee97d517189c1b29eb9d974f59fa611c4d94185df0f05. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:17Z), 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/BEI251800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e9ac1cd942071bd171c73047d07f8731f138c8389f6302123ffa2fe46ff9a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BEI251800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb488044aaf9860a78170f03472a7e6cbd4fb4b71f0672825e7a199b0e18a1f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BEI251800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba778b253874b615dece9732b8af357328e0cf89a8d1cc58c6222d7baa84f26d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR59R1934155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e833fbf6ebc3f303db751dbf8904efe29b18492706f16f187ab423a0f74ff25. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR59R1934157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854a90d931f48924e72099fc95af40ae3fdaa044f87c3ea7cb755787c54346b4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR10S2133789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da03d2d0f1584be6dc649167789c3d9c3b98043f80a87cb9ab5acc5dd554b51. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S2133792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd672139191e75e75fbba13e79f7fc743639ed1d65dd26d9f58085e2f733352. 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/FRX202291739.
Intimate Immensity / A Call from the Eaves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb765bfe4595b3c53302462cfb22afa6d1d400da4e40a68b6cf376efe14284f. 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/USL4Q2258772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41e3da6e2583e483b18d64aebd69412cf507921eee62eb513a2bfaf700bfa3. 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/DEG931992131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6534c30f0eacba9d0a8225ce97145e63cdcb6dd9e44a50d7a22971cf981a1e8. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR9W12041349.
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