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 0x040cf199eea95ff7aac1e2218a177169d50b240e313c1852f367f5b0e803abae. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5763725d-97db-4e53-85e6-d8a7ab0183ed.json and https://artists.proofprofile.net/proofs/artist/5763725d-97db-4e53-85e6-d8a7ab0183ed.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 0x7a7b7efa60de03de68fa7f56fcd8ab4f6d526d7ab9b7e0d7d1a9f1e41a5947d6. 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/BXQZW2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c072ea35e2bc648625a5af2a55c7c6f3d7ef4b7d98bdf71a1ab34b74fb4098. 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/QZMZ92492769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2970e4e6d7ed984626b057099af6cfaa6bfb59f468eaa0cfc0a747ddf3e8a1. 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/BXQZW2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0d6691e1a89ea1d3813a32b53013c50b86a9cac4f3f13f4bba238418091713. 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/BXQZW2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b1b3c645a63d194b316a0cc297eaae780a9b2374247cdd5e6b07ec87d9ce4. 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/BXQZW2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed581d4110c8dd20aa0291c0ad4232238b6d6573ccc72e6ca289a2250d197d3. 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/QZNJZ2372725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8792e4514d571031edbaf6ba162de640ad79b63f3400984f6d77d44dcdd2e5e. 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/BC6ZI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb25cdcd490b22f432537ffe012ef3b42d7c1511f7d9bbadb1e1ccadd09f5c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BXIV82410559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e6e9c3949b2cdb189a763786813103d0eaeba9609ec7868c8754591215d19. 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/BXIV82496739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5954999b25cc700cc479f9aa6006c13876dd396dfd2bf6f4fcbe5207fe432c03. 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/BXIV82428264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9b5c2e34ec3605ceeee2c01ef65b0650eb47d961a41606170d8777edc6b1d. 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/BXIV82465717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd846bcb185b45f86c5224999c19939c25ebc04c79d2f7d144d9fb1bf5a95bd0a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXIV82446999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22002bd86ec32bb6141c2f3e86c91a109c903905a5a8c291297969c17c97fe04. 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/BXIV82414612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701311c25b6e2a334b6580ed79368a93362b1f6c2f09f803dcc42023330e91f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXIV82499224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2667106222ab9d6bcc2523c9558d3a0fae2d3bf67e774f6fae199ff522c9897. 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/BXIV82484996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb28609dc6fd006771b16e31c5aeddf2d0492b47f506b153cb6dc3635f1114cd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXIV82424887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d304677c4305ecbfc40365906fb8907d8524007ad571c83dc20b22124d7748. 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/BXIV82465665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559bf84d5e07d47c8861efd1aec976231652d6632710ff885ed72b1bbf945a0f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXIV82485558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc92ff082c1a850291f7d830741df9628dc404742cfd1b042d7f29c35d56c21. 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/BXIV82492999.