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 0x8da0553e90beeb8964cc75cd1c8fbc7200d3057de6e62bd9e16f348fa6328e3a. 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/6a792aff-698a-4246-aa85-29b62da5648d.json and https://artists.proofprofile.net/proofs/artist/6a792aff-698a-4246-aa85-29b62da5648d.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 0xbb0d5c181d870305c7b33f41e1e2e6ffa180680912f1f04c5edbfb0277a22c6b. 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/DK4YA2285601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253dc2382ddfb49498917b5dd1247feaa69a930417678379d0048f4e92c588a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPH12300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf92b60f7d91d37802dcc6511a877799989be8a9332cf5d945e8e44832c7aaf5. 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/DEOX71100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0537196e270662953654f991ae880693d3b526aeafebb927fa9ed49f2e97ed5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEOX71100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e735dab8bd68a51d6c807cde20bf2fd67b60732abaae2dbe134d9776f4900. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEOX71100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a8d00a80c4ba918de12319836c5bc889a48a57c834fb4153b4c6817646f83e. 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/NL2QC2100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6a03251993142f1ada84972de128fa278d058c2dcded2f48b182ab5554c5c6. 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/DEPI82200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1541d929f368a0336103c4afa2c4b296911f2f470d606078d35542172b0d402f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEML72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a4f5c15d1400ff4aafa3023dace32c4671a910188f930d4b37a329deea50d2. 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/FRX452141902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e0578b27538dd48df397a4d5e70275b0799b2b525e8c0609ac9a8b99bec27b. 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/NL2QC2100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbaa11af40cc3d8ac2bae74b39e921d4dd91b599858f003e6ed02451fb1b16c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DK4YA2168001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1c899056f0e14b52a02060fa571b3f1ce2c6e881f6b75e2a6dcca28cd0d0c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPH12100139.
Home Alone (On the Night Before Christmas) [Deluxe Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db8ba449610080eb8f903b9ae4749cac2be219ec73a69e5d6e470c6d161bdd. 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/BEIW12000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e250cb756602d063caaddbfc7cf8f397f25df064d822ab064ed12866ac5caa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEIW12000526.
Do They Know It's Christmas - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acaf0bf0d052bad64880f3cb8a8eb53573eb073834309eb63f712328c97380b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BEIW12000467.