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 0x75b8a82b088a21afdd8d3ef2e77371b7673c379692d06331bce089615910a1b1. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/613744bb-5d07-4493-802c-7245aaabf763.json and https://artists.proofprofile.net/proofs/artist/613744bb-5d07-4493-802c-7245aaabf763.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 0x0371ffc1b138b7476766216cae4be337213102b84157384d7377e8363d970684. 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/GBBKB9927008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e453fd08a10376685c032347479550100b257ce4e0e1834f53f00d6713ef01. 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/GBBKB9927016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae9799e143bf61ebfa1a128561bac18358126ff75611092a87dd2dd275f9483. 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/GBBKB9927019.
Les Misérables (10th Anniversary Concert Live at Royal Albert Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd913b6469acd06dc3a49399ffed5c80e0fcf2a527fae14c22be87e2b38193a. 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/GBBKB9620807.
Anything Goes (Original 2004 All Star Studio Cast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8a4f4c3a49083aa8c1954ee9d5d4d5ca47b0c0dc3da131f11f87611e4f927. 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/GBDGA0301744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77cdce824155ab129eeb9a71fb19cf46213815a28bb3c41cd92ccce44a376a. 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/GBDGA0301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e4c2a6b2dbf2ca77020e450a2133f9560ecacb0ea5c04bec11d076252b8db8. 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/GBDGA0301751.
Let's Have Lunch (Reprise)/Girl Meets Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0a063da1d75f9373f53380a32b50ac67ec473dcfd7eb17d5cae1f37434ad2. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBALG0500107.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505d30c64fdb2561cfdb2f356ea58fb5acf9f4129eeb582319239234ffdd699. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:43:46Z), 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/GBALG0500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21e622c58b6f27150617b6870c460c121a95daf5860a1249d5b79787b03a126. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBBKB9927003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0433b4e20919649273f33baeb77b058d932671ad2cb0fe8d350bd7fa7004067. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBBKB9927004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13544b455f71eee2601f282bd60e83afed09ade905007e31af21dbe228e9b8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBBKB9927010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b99b7e12ca478726e0c65fb7356f6d25f13978431230f48f752ade3e01fb62. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBBKB9927013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21c09c46d6486f83eb8ed1f76bc60189f250daac4a32bf1e8dd96644472b730. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBBKB9927014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6dbfb6b6cb5b1594e986357d32244bd2668d80571507f5adacf6cf501009be. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBDGA0301742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0d534e0234091d2314e9a8a56c68d69d7706175347419aed64465e7bf53312. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBDGA0301749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba89213c4cd2233b2375628cc0fee0938a8802ab71a8a65994f8ad1fe06959d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBDGA0301752.