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 0x512128f8c3934738fc5220c6816467c0c567434803b8a82aa894405864cae37b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c4a802b-aeb8-4470-88fc-7712d3aa0d68.json and https://artists.proofprofile.net/proofs/artist/3c4a802b-aeb8-4470-88fc-7712d3aa0d68.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 0x81b1611eef6c8ba6f187d390fba075835c552d3294105a95d70ae670f7170b40. 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/MXB952300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ebfd306b302171aa8a0923e6b48468dfa7ce9514bda7c371476fc2cd527c3. 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/MXB952300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe225f48345d84be03becba739e3715ac779f9940c3c88793acc01cec9883e5c0. 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/MXB952300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d164c679e7959aeab7bf97ddd53e820d780b4a1b98d7332d17eee16ea9e7d. 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/MXB952300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71088fb97b139ae7d126d98e6cf2d52ab0b9eb45b3f789e77638cbcc3004d18. 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/MXB952300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe295bde0cebabefc96a84010d52f51fba6a3663611be7ee72a75876f1f7bba84. 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/MXB952300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40edf7a1e480515ba090156f15e47aad8c342fa9e8ee12e65cab6377b3f4910. 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/MXB952200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb822f14f867c5c189a98c1e2b82c2365c311bb020085a67b784c26753de7e48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXB952200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d7e53b68972d6c0dbb686662c47a7e627a37560a255e8e0b41b6d5447de134. 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/MXB952200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff39dc901137144fa47edb7f91b1b31cebe14ad90dc76a9a2c1e2abcbfa02c. 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/MXB952200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8545ce331f414a6b949539ccde9eb04f02773f38eec8bb6409e936888c97a2d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXB952200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c1a2eac1d8e8c46efd41eb42dbafa6d615227cda3036a536f96bb4260c3f7a. 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/MXB952200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c2048ae95a489c82927547cb22019fc90d7a9ef4bd3662bc2a2a190305f05d. 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/MXB952000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3512bab6c7dc0bdb5c3941442f128dcbb5553b27f93070eac0f0e14c4137ad. 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/MXB952300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b27d15fb89a84887f166cc6d486c101cb5962cd55f142b5e66226362962369. 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/MXB952200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8545ce331f414a6b949539ccde9eb04f02773f38eec8bb6409e936888c97a2d1. 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/MXB952200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e4833692e6134faf8f9fe212a65b8017fd1f7eb443c4623c22aaf8100d1fb. 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/MXB952100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fac760b28e2d1a5c5e4d0d6a5195b9bceacffae298c60b42ae20190030f743. 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/MXB952100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6cbe9d576f389a728e3b7ffc7eafc3917d442ebfdc660f3b97a509c6b7dd2a. 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/MXB952500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc61cef4dec12ec3b63a184f193287cdc6e50c365105d77a60af5942741fdd. 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/MXB952500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703fad648c716dd4c604c3faddc71a31f5aae73503552b9657720075ddc2b63. 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/MXB952400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee396c00a3fad3984f01d8513a800b929af6282af4cebf6b87ecae70b460b62. 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/MXB952400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb336c9fccff44e33b1d2872ead157f606a6247e4c3504687f111d445f006c76. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXB952400007.