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 0x8d38b7291fdac22859eca2d87f0932f6d94cf02822fa1c825c1574cf5a8f3b1b. 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/38e7cbe7-9a27-4bd6-b1ed-550f0e400e56.json and https://artists.proofprofile.net/proofs/artist/38e7cbe7-9a27-4bd6-b1ed-550f0e400e56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hold Back the River (Acoustic Instrumental)
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 0x9e3639d782bdbbb23d50d890e71c6f17e01dde81fcc1204f1ac9d14a75027a26. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:31Z), 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/USCGH1857149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672bbce196e4e7a0e8db5d2b4bd94ef96eb478cccb58c5b8b49a5315ad7eb14b. 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/USCGH1886411.
We Don't Talk Anymore (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d60c7ace8ea7440e958b99c0753b480dafe1b83254b2212fd676e60fc76024. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USCGJ1878770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bceb3d6e61ae48b48408f517343c13f5316da1e10008b531407a2f56d25d04. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ1899298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1846d892ff97218adc9d0885a11b63ddffa3099dd174cb662af207adba44ae01. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY41836514.
Garden (Say It Like Dat) (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf474300dc3a6dabdaa6d20302acd328c2e104f402a0603c18dd378c974f5c4d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USHM21896461.
I Like Me Better (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe758d07c59e422bcd444efe4b0d0fdd8ab1494219d9f8f797f676f68626f6e72. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM21896463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664269077d05c034d94c0db291cb5a1bcdeb8ebeb3e8b2279e445671327bf08. 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/USHM21896467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774466bf52abd7ec93dd702a2d00f6ed2d5c5a875559b9b2279e2faddb09455e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ1937142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282e9087c811a4e4f4899f4acbaae9b83d9e736d27e09f7f34c230293b85f8d0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:00Z), 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/USCGJ1937146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf294d976f983e8dd34c5a0d83e68fd254d9373d8e060737c7ad46a826a2a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM22058480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95c69513de8ad419b1669469ca47439686dc7a8fc3f9adfd70a39813fff52b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHM22058494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b77f8213cebed62a699ce575e1f8de5287dbe90b2528a274177ee3bfa00edf8. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USL4R2014559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc758df944b78f75adbaf6e50ed7d2edbed47cd870a84095b0b6effbb4cc25daf. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USHM92125459.
Pick up Your Feelings (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf01972d8011274b371c21de5c18adc983df23085809ad56f0bef190885344b2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM92125463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7496449f7ed9a8ce06fe7d8ac8f3fc2a71f3ca85c45608939b2ce7b09f9a4fba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM92125471.
Heartbreak Anniversary (Acoustic Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573ebe3f2b6de2c3045cff90cb9334f70560bc9ed7ea35f58848fa75f414730c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM92125474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfbe2edb427ac1b16e223fe1de5614e66ad743092354f0ec46f8bc779e4801. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:00Z), 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/USCGH2326622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc1076456a3bd77d8c16022d8ba236fe059b63f41f2b902ef221296c9c937fc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2326625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f62935e24208ff019fa9689cfae171bf9bd4330e5511233e166cab5b3871a03. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:40Z), 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/USCGH2326629.