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 0x45fd02c44adb3662a9a6a809a3b846c5d41c6c21a0fa019c70eacbb38b1d1e5c. 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/e4cf75fc-1aa3-45b2-91f5-c794ee4c73cf.json and https://artists.proofprofile.net/proofs/artist/e4cf75fc-1aa3-45b2-91f5-c794ee4c73cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Matahari (Original Motion Picture Soundtrack)
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 0xa95c7beb403acf3b3f7fdcec7c6a973c59631b8a86f81db5d8476cf9c6fd521f. 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/QZK6P1944964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a093f7305f4a55d31c16fc5945c0b99a64e58a2af876e9b97cd58c46d4eece. 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/QZK6P1944966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c98282e35b51b28436c8e3850ab3057349d4555d2a8da0a858e8bff2595797. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:27Z), 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/QZK6P1944971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd75701cb6b60aea0e4be34ddd5a3bf5193c4b1a2e03b8740592266a5178cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42125417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd52730157170db26632bdc1c8ac03bc7688feace7cda8b065ff22b841f9482e. 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/QZES52253483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4424fb9596921f7b7e9e4da153a40f20ac4457aa0c2492672be1ce4191943147. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES52253485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b6f418340812c67e080f3afc02abbdf36d06864fba0ea67a7c81d219971088. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES52253488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc04ecdb22c2904adeb508910ea8ed7c5c19c26761f78d5ba5490c1ff06bdcc7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72230253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f98c4cf9690728ae9b49c697d5aaaa12e31e2e58b95d118849abaab14c76a2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBKQU2444667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a5846d3ac387a513eb93a55c16a087405cdc9bddbc6ae6bc644a7c3e43b5d4. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:27:53Z), 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/QZTAU2404056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbe1422408031a483b98921f3e07f44156b632a123ec95d92e9d2542b6e4dfd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZWFL2419854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe9f280c5849d68a2e8af4a908ef310626a43e4564c32be714421e19961cedb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:04:10Z), 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/QZWFL2419855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa424681fd754c6d1feef054069cdf8cc14316326236b4d1fc173bf72a24a244a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7S2429970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c548683296a05321e57660801a044a6592e851cdd02967dacdc3e3157e6a77. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZZ7S2429971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0966363de840b89c77d984d609acf0a2c66b5257398bba85f8600189ff68c038. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:24Z), 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/QZFZ72508137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041c5d559b406bb73a3fde8a9e61da340ec772b55c83ae5eb075ea537424f559. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZFZ72508138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e2eb04b4ec6829e5b1afcfc69484b54be68c1f0592b24955b549f60415d4f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:13Z), 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/QZFZ72508139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7a669a71c0b388eb8ed6e0b9e0e6725e312da1aa2f27c08662e2fbb81ecbc4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZFZ72508140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc811b08ce112f15cfd6a1bbef667d926d634e8ddc5991999634a2eb1851a2a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ72508141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b13cec0df62a5de3cd645d002d8a5f0d41d4ff6a6747ee810fc1743a820611. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ72508143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c5268f62f1a309e88a154b9753517db3557778befcdcc7b298ffcc7a321c75. 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/QZFZ72508144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd53c2f53f611c366a2f3a14b1bde7d59dc501dbb56a74c9445f4a4426c9d36e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38Y2542313.