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 0xeb7bf7f7f4ba3e2eeb5a37672ce1c02c82b93154dc3cf71296f45f7eb4210ed5. 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/ed8b7bf2-63cc-417d-93cc-249635de1596.json and https://artists.proofprofile.net/proofs/artist/ed8b7bf2-63cc-417d-93cc-249635de1596.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The 25th Reich (Original Motion Picture Soundtrack)
Polonaise No. 6 in A flat, Op. 53 -"Heroic"
'Tristesse' - Solo Piano Works by Chopin
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 0xdd5fd274a1f9617e5f9041061e3a8e579aa8293165b07dc4ea2f54d959d1dc9e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T16:53:02Z), 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/NLA509615202.
Shine - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb12bec003759e7554a38849610182eb73ace87a6da5bc0269c37a266d21e72. 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/NLA509615201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fd274a1f9617e5f9041061e3a8e579aa8293165b07dc4ea2f54d959d1dc9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLA509615202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805301a0eb96173ff8cea297981e206c11281b9f8913b2772593acfb719a84d. 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/NLA509615203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81aff69718cc25d23aa64b5314b55cd6f98609110f92f664e323d3ec6523a0a. 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/NLA509615204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c3e4685e0945c4c33630d09b3dd14d241233e71b590f13cac24d8b05c2bcd8. 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/NLA509615205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb306a423cc0ffcba4a8839b149289d1ff1f3612f36cc662585ee9993d768f652. 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/NLA509615207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b77777a8378c0f98bba3617c5b6f6158f39ba28177624669461c6fd572d59. 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/NLA509615209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ca26fa82d5b8559c32b7726232e84658ae915542d5fe6b1b181cb91d7a5566. 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/NLA509615210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd108b8500b3f42f01c533e570311906fd04f22a616aab36cb8d9626b2d9a3b. 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/NLA509615211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d56ebba69b29b3f62cb5a9a6ed31cf3a290fa43a545a05de2642bb278f9296. 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/NLA509615212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc417c5c3bd08ccb0362a3e32f24d6d790df44d48b05623b27cfb00ef0efd32. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLA509615213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1456ff740a59ef87b7395bff9e37619a1c1e6eaf856d9edf7ccb63f12b51c. 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/NLA509615215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11900791a42948be1aa01cca8ca5f28f3c990389531a310e32a8813e995daa2. 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/NLA509615217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb666e3e0a570bd7f30e13bce35d87dfe47e4704eea973504322d968cdd8d82. 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/NLA509615218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7550c70cc3a3266a535fc63efa1249b2125fdbc81c741f731f6887b41904a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLA509615219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a71c95bc3fc8b736c3e3ad0171720a542ae7322ea49f6a572d0b7ff55607bb. 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/NLA509615220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52114bef3154b2ff8416914e9ede7c947a99ae7e160a203e971929400d8337. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLA509615222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64affb9055a6354e155602d8e7c4dfa94384c14c97c19ceed42988b94639cec0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLA509615223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08efdda69fb1caa3a288de1542bb2fd5881368dd540c8cc578d8a81cc5550365. 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/NLA509615227.