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 0xc291cdabb7a25550b6b152bcb1003ca1e8bb1b0293103d44b7a59023a5519488. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d464bd2-da87-4a9e-b2db-2f57475c8cc6.json and https://artists.proofprofile.net/proofs/artist/8d464bd2-da87-4a9e-b2db-2f57475c8cc6.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 0x93adb221bee284e0d3e2c887971c79a7041b16c0a8ea3607e1b40418f34119da. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR0Z50092842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e000b739f7fdafddc9cf2c8fdee73b43ee066685caf3732746c0ac3e0ef97. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:23:52Z), 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/FR0Z50092845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe037d116549488e9a301b3540a2e1d9b97681b7aec2ef331742c8fe59a44c934. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:18Z), 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/FR0Z50092846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1294c7ea5b1c4757782204292cc3adce89e565b92e767b9a92547f4889224fd. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/FR0Z50092855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60182965a667b16ba667a8113c78eec8a481b5e71d74c82557648b69ac987dd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR0Z50092860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b850c9a53f85ce83ffc0464276f0d08aa8383bec247e921a82dc957df1fdcd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR0Z50092858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa5fed3a06c8248e600cde534f3c2bf0a186edeed6de781267ef28b5e0004d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR7PE2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd090823d186ee161ac28338ca46a56f0324e3aae510322713edbe194ad431e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR0Z50105765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cc595661b0c45179f9a2d99e9c1134f3e5712026b12304ac0f138d44205f39. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR0Z50105766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf717c172e7a4811fc13905c759cc6bbe4ced977aaaf0e86dd08fd6445824eb1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:47Z), 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/FR0Z50105758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c9550c8bd1326e23255c88689a0880ae9f86afe09ebfea032cf6c4873ad9c. 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/FR0Z50105759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b30318fcc5fed065d7daf627d487ccd07392596e2e6f4831ce3d4ea78c18a7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR0Z50105760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b40f6712c034b952e125ff48a8023cf69c06d718fa77d8e921fb73ce230d31. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR0Z50105780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ce065a40f5414f670a8b14431ef2160113e400b3dfa9a5d7c823021153f12. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/FR0Z50105782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c77321c6ec27e3555ffb686bbe9fff6331378b15124548e9e9e852c2a9d9f. 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/FR0Z50106280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045ff0a40de165688e15bcaefc226b5dfaa0ae73a0c6cf721c461948f288bf0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR0Z50108825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e1712e0901627c31e7824ac3ca7e6e52a0b045c028cd496b31f743b09a384. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR0Z50109132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99567497384baa781994a3e0bdc648c8bd9eb654737feb25a4621c2b5924bf9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR0Z50111167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805852d66b3fa736afa47fd4eb210b8ef08c37a6c830693d2855070801c02ced. 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/NEKSW2400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42501e52b6e0060ce80ccee013266d9f514b62e1bcf55f1df7e2ba69001bf959. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR0Z50116034.