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 0xf9ce0c6023dd295f51c8f132ea44b5c8a1bf9407582d449a5ed030af692e8b8c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebcd8e7f-21c3-40b9-9eb2-42b417eb8a53.json and https://artists.proofprofile.net/proofs/artist/ebcd8e7f-21c3-40b9-9eb2-42b417eb8a53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Walking Through Walls (Not Your Basic Tracks)
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 0x6bb3c1f9b94e94bfc135fe1f8e1c306665846a8936c44d2dc5c15c1c08230cf6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYZ2122105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae4bf4bf8f3b2c87a1283c3224785ebc2341984d3f45e8c94d1455ac95e811. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:43:31Z), 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/QZES72103623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60452d4fb3ef23a92f4e481df71e53c8efc35bc5118d460cd55842aff69d9427. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZNWS2171539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d6c80038952f0903a6c95f826ab61d43b7a27e938b4260dacb4d5abeda815e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6N2285773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60452d4fb3ef23a92f4e481df71e53c8efc35bc5118d460cd55842aff69d9427. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNWS2171539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996df0a7aa4a84113dc087156d3c7885c394ca4b5297c860131e07a5902be58. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6Q2129492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cddfed278059c298fb4a60d4523cd20c09cbac6b1a44ade35570e63dc9cb88. 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/QZFZ32110716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63b9efbaede5f4b8bd23836a24a6bff46bd113c2da1fa05dd0d33f2e9c0343d. 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/QZK6F2015611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda91287eec54f2a3dff4cda4330c9273fb8b7dd118609416b9911af08ba15bd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWV2266026.
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