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 0x00c9c731047b6033702a1643c2a8c86f12160b0b7ee99245431584289becfd6a. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a28beae7-3c56-41e9-a890-8441a60eadac.json and https://artists.proofprofile.net/proofs/artist/a28beae7-3c56-41e9-a890-8441a60eadac.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 0x3d97d3a726bac10e5a7f2ea36e09e44f54be9230c8a127de7c059cf2d05e2254. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY41846324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3dd2e5c17ecf3c5b77f4684253a637130c9146d51540e2c664a786028e5349. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USCGJ2167819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9019f16bdc428b3fc7d4db938acd3ecd82c01576a93bb9a96b63d9519d623218. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USL4Q2122877.
Oh My Soul (Instrumental Performance Backing Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbc52ad8bdf758a82af9b58c1a8e9ae8e7cb311032ec5e353229317339b491c. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USHM22221719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263af8355f2da325ff063597b4b3ba0323f894a006cf533ace0367f2b34390a6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHM22376871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c21dd097b460f1ad837065c1a1a244de9cd9d9b2827c7b00dc11225722f301d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:44Z), 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/USHM22376877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07ea1beaff2b6374849d7b00b491b33a7e1d89eddbcdb6f754b0b3d5387dbad. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:56Z), 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/USHM22376879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1375f41e129c8e9b608e358b6cdeed759a3acd4af8eaf5c605f06a85d3433b. 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/TCADX1863818.