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 0x6af1cf6cb3fea54107a4fb4622e66b67d965ee21692c9afe83f885ea14f0fd6c. Chain 2 (Bitcoin): anchored in block 954139 (2026-06-17T21:12:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7eadfe1f-dff0-4c9f-8dd0-1889ef085032.json and https://artists.proofprofile.net/proofs/artist/7eadfe1f-dff0-4c9f-8dd0-1889ef085032.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Connection to Mother Earth - Songs from the Native American Church
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 0xc679fd514d2ec98e24efc5da60e658723d01093b439624fc2db862ae90e506e1. 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/US8640531601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dade1d44fe2ae82c7c3b6726770fb44c8ba8e81b7c186c5c540cb940504b16. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/US8640531602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85f170d0afd0cbf340cb517597126a77be0cafb2d09bcf83ce00fab935d40b6. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US8640531603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7595f0cd7c8a1ffc645533ff4e31f231e8ea44bb783203d797bc602b7100f68e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US8640531604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0441b132174880b15e61acf34f7c162913dc6c565a4b46095bde30223aee304d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:27Z), 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/US8640531605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66562119a28bf4b7965c721092010158d939e06e38f2d8be08fd4fd66d19d87f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US8640531606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66490027e74423de92a3a5f08e81d6d29a24df0e51695cf93cb86514cd819033. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US8640531607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794b3b3d30ef79fba609df424e83fa1cea6197530e53303587cb20ac8d2085e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:25Z), 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/US8640531608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125afba8042dfe38f6915c95fcc15415bbb6cd185504e0987fec16faeba41f9c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US8640531609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870bccc18cdaab7f56f6e94b1b10407005129bfc0e19a3ff34f912f70406a86d. 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/US8640531610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c65a3278a57d42487ee594af69fe2bfc592df2b93abf6483d46c5e61394ef0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US8640533601.