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 0x19f3f51d415cfdb2dbe43cb5ee12ceed9670b707eef6ff95c7002e48f508056b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43f6365d-3e55-4d3b-93cc-8df9e377b612.json and https://artists.proofprofile.net/proofs/artist/43f6365d-3e55-4d3b-93cc-8df9e377b612.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 0x0a31cb38ce861084b84dd05fc6a6d302e84557064923658c466ee3a262acb40f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRZGB1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5f8b34258bd8b09dfa0049e4db129bcfd65fb50d97c42ac618bf918b29e92. 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/BRZGB1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf652e0b9e321f20dd15d8068001dee2c57b21a94e6bdd78f7f02f02e7c261729. 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/ESA092400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d61707c4b0de17669b33b9afd48d1aaa6ec5229b1289293130cc0320af3f45a. 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/ESA092403687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b76a3f0b5e1c108775fc27c57f61d9992f66d8299f966ac16f11e56d3c807e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXPNP2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa182d859f3317d2fd9da64e99af884a8929db829567f2415ac2e81eba2133458. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXPNP2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38de47efb79ac642ca65926a1fbd910854df80c9d5f22d4b08998183bc0b4c. 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/BXPNP2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c6ccc325a976b64918339e54538f359b2aac914ef4b1d7b6c7f5adf20fb34b. 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/BXPNP2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a40a9a7c12745c83caf96faec5311373f27259708c123c12e3ec7b5c6256c0. 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/BXPNP2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44839ac7ff08f526182a0fa12866fc9c37521afca79bf4ee08cb09039c4583. 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/BXPNP2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb3d05664a4b9025cb4e80687d2f14033dfcccf91a8f24daca6d2f5e4eb284. 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/BXPNP2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec56992e7fc7ef5f191d282204b18d3f053b9b01e29eda51010cb44697b1ad8. 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/BXPNP2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa091d50f90a16b4e2663b3c71f5c38755b21f6e4a0c4ee400e8e4e84d4dd5042. 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/BXPNP2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e780ea54747a618f47d229cdaa728c32d801da5d9d1edcfdc9e29d5ea689ad. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXPNP2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5966be8be7f415ff05301690c85371401cff038aa92cad3e7b52efcb83202de6. 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/BXPNP2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e396b86168d1ab18c3a01838a7c87281a369d972036a14431f1b21ebab5aa9b. 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/BXPNP2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f4cbbb3d7645d59ab83826e1a3f9ec7fc5f2f08ef9bebe2dd4bc86e5393dad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX16H1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b76a3f0b5e1c108775fc27c57f61d9992f66d8299f966ac16f11e56d3c807e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXPNP2400039.