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 0xa0df9449fce82ce2e8f490e382740a77a065015296d628894f0570b6d68ee9ae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7ecf062-02ed-46a0-b31c-8bbe2455cfce.json and https://artists.proofprofile.net/proofs/artist/c7ecf062-02ed-46a0-b31c-8bbe2455cfce.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 0xa6ba40082d53b3cee0fbcfdb46ffb2945b57794dbbab4348e640fcf2725da211. 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/INC622211580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5990a6485f42d23f87be86558cc7b7eeed8592f760f5fc9123ea6804cb1bcec8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHD2302679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b603bf512222e6be02887c3ec4e3956ebafae4e825df4a3adb4081cd8c9f2f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INC622215004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4b9fa82eb6bd1e230c4cb5b1426e15368d0d4cd0826e69bb9908c59414acaf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622215006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f1ec11689402127165fddf041299f0dc358f0b078d1efc9710a6f26be1541. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622215007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb9bf6a5b28c907f4c88ee5889c5437564dd932f1bbb6ceb71cf6bedacd1e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622215003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5e1bd81271d46cd871eea3caa880157627b5fb96e6868fa5b22b5fb80c4b7. 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/INC622215005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b119589ad1f09d89f89d2047b70b97f3ec14e6de3fcf790460954210f5b59bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHZ2431686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda7d84febf74b1359e539c54a26395579181b3e6fdaf84517a7bb173dd15c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INC622212494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7701e3b5aa829a99cb61ab16cb8cab68a90acc0db532bfc31a74200c37c89302. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622301277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9093bc51850961f5e4312bf51ace0c10ad69b12a29c57f148e9e36ecf7b929. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHI2304686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de3072a685a47324d455caf6ef5df6a0a7fdb11cb7870c4add0ed6c9de71ce5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGY2339923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8400d77b46441a5749459f6790ccdaedd6be2a33faf644b97285dfab9a7433d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622217570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b48b492ecdf998a087473b2b2cf1959826fd905dc71972d0f450e1525bc79e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2461511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746b7f421996bb84eaf3be03ea9330cead037239dff75c4080aad1afba4fb846. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2507057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfcded107a536fbb0849eb77fddd8f70c56a88d333c2b33e5783e6d6d2e7831. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622251460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c33def3941ec5f747155caaea22e39b70eee6cec10c293daff072a2172ce3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622251199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721acef9c35cc89b1715807a75c56b23de405d71634bbc19bd8963c3bddb992. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622251198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b1311a73caa0f6d79334c7e8b445ebb21c5fa19e50189a1a812058ef615615. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622220285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240489155042506c9752056afdf013ea552df6bec1020486f8e5ec87459e8c0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INC622220365.