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 0xe7dd29285894d6624eedc64cb0e65f617a5e9f07396e96d63b458c70acd118f4. 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/dd9eef02-51d7-4167-aada-88f114ccb1f5.json and https://artists.proofprofile.net/proofs/artist/dd9eef02-51d7-4167-aada-88f114ccb1f5.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 0x37b4d634fb560a74a6850cc969c825149710f12acf6034ddd47de33945aefe0b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMBZ92456685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0df5c4e0e2149bcacfbd0402211afdf79d8f1944e91c71227c9aa5bdf0c152. 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/QMBZ92456688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bfed68b0350aa347928fc0ea70d288310c45ddee573bfd9bb92124530dd3e2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMBZ92456689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b18770ffd756d717f689fce087d5c9682d8f4b7c3b1aea97b4a197a75f351. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMBZ92456690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eea604081914a0df97f7463f520405f16c61fdaeb4eb92dbe824319556e972a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:55:58Z), 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/QMBZ92456691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220186593b9944aa54d5b11e7043d2d42dc40b7be15de39952caf71eaa659651. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:35Z), 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/QMBZ92456692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8079c630f7f183216caa2491f2fc6da00de0872c465c05629a26231b210ecd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ92456804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0b8dfb545c3a78b9d956ccb08a8152e854cfb32142ce5a76f11bd3cdccde19. 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/QMBZ92456805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170b3194bde7257b5f9e42260e87685b2120aa749ed560af75fb4dbd910182f6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:47Z), 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/QMBZ92456806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9486f178d69dad23b8755eb69adb6f7e20df7009d2cfe7b19906ba5c2f3a70fd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92456807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6694b27c61e9cce81496194208648967491e6189f897409218f5e0a853d8796. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92456857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba241d9b336eb4e742807e98cebe8145e6f64fab262fd6a671465c68901a787. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:34:41Z), 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/QMBZ92456859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cd89b450a5d52d38b5b4fbdc65f25f850579c893a8aff66efc424d62926906. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMBZ92456860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ba1df8710acc63f33a96c7d16d654387e80b93909b2bf8b9f5a2e12e27bbfc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:20Z), 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/QMBZ92456862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05193f4b536456d60b63518ee91026b4bf2aee8a71073da3b8fe409f01e17911. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMBZ92456786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cddcfa5ea7e3b5060f5b37ff043059d918ad88f773b7ba17a1c983f6bcbc077. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMBZ92456788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b88541544759220336e89c50a2ef72be32d7de76587d87f5b24b37b9e1d25. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:50:09Z), 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/QMBZ92456791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e844999e2ccb37f82b0ccd78c10a7cae0b7198a05a1b344012c43db55da273f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMBZ92456793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeeeec1c22b5ff2465ed9c51fd7b8831e15964ef585d57111239a11970537cf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMBZ92456794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f20542d6e84e3c2c71f495d8718e8d684a3b62d2785e989c916763df3288d1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMBZ92471896.