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 0xece88ff848ac51a3dd4cececfc8f23449f3a363e95c89bfdb9988e45a1de7efe. 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/aab58bf3-a603-4902-9d2d-7ed1f10fa67b.json and https://artists.proofprofile.net/proofs/artist/aab58bf3-a603-4902-9d2d-7ed1f10fa67b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intonation - Harmonized Songs from the Southern Plains
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 0xdfa9fa3d9f3e7a5ac34c9764107cb0dc7c3c0ace51638046d639f9f50583068e. 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/US8640741601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38886ae962401e4630d0e599d2eb7d251c5786bda2017b1834bf625dfc1bfb9f. 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/US8640741602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d63ead9d689ee15c2739168760a7d5677008ad3b4447054177c4253ee566167. 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/US8640741603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed6953de487848c50b6e037635074026552ca9af98862803b7a089497a64d2. 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/US8640741604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bbfea8ae2ef62865a42e4608c0c40cd3f20705bae264e7d1d1aaf27cdacaec. 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/US8640741605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dcd5189b3665304783189c545bc0deec8008f29cf09db750cac0b77043b5cb. 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/US8640741606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcf1678f1103ecc22e4e06832c4360f5a6773b8631fc5aaf8f3a5a07b369a69. 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/US8640741607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd748a9d664dc732c270359a07d67415d4cbda566f12e947f75cf6fb93dd57b27. 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/US8640741609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6f0a929d166b3ffc10749fd0bf8cf2ad98572bbb1cc5b39c793f6513f9438. 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/US8640741611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f76efdfc5eef7b6186bfb8817004abca20adca74709a3295ded11ff6e2c74. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US8640741608.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37e2c274d71f8e3856c836f55ff7f4dafc5e292e460501b80887f99f7e00cd. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:39Z), 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/US8640741610.
Rain In July - Native American Vocal Harmony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526eeece947c44bff9fe2027d2a2b84d5d5469271b8b0c1d9f9795fd45c4c4a1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:09Z), 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/US8640944502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a21a79480ed34e9de8f2026cae736da1e29679958d9c9a4d30f111519a9912. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:30:19Z), 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/US8640944503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcece0637faa834f4b886264a2a9822f7ff58995b6f9e0a2b0b845a8b36bd8295. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US8640944505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36339672909e8f34fabfa5e63829fb80465146078490def05f7d8f072d694886. 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/US8640944506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9cf3dc3cfc129d13cc2a1b96ada46c507c0afc75030ad2993aa0eacf0fcf1b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US8640944508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5bce0b3aa1b59786755d94175017179ff5fe73dc6d6848706832aff65634b3. 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/US8641149714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58fd43e90054651500d9cfd97b795cc0fe87d7cf2b929abbc3faa47339c08d7. 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/US8641512001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4187f244b8bf365020e00ba2e85fce970f81993c178aa045db499136cca0c60e. 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/US8641512013.