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 0xb3fce73c679f1d70b8b2d7fa295a2b8a3eecebc287960823511c9524ef0dacd0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/117ade3f-f660-43be-a6a3-e4dcebc67bab.json and https://artists.proofprofile.net/proofs/artist/117ade3f-f660-43be-a6a3-e4dcebc67bab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Astral Observatory (From The Legend of Zelda Majora's Mask)
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 0x84efed64b3b3ad50a000ffbbd46fde9b5990a65ab416dc810c3b6efdefae2f4b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHNA2280726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a3538a7f659357947d7ebd4dedd4d29c30076a4dcfe308648a81cd859be9f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZRP52274722.
Executive Lounge (L a z u l i _ y e l l o w Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a3538a7f659357947d7ebd4dedd4d29c30076a4dcfe308648a81cd859be9f0. 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/QZRP52274722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd3065b4c268c6a320b516479be0a3cd28cf83fead2b45b08e832b8faf09ee2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHNC2373808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0340d7d6d0a736f9b9f39f79046568782b90bf49e05f594df3a2e181f200deee. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWU2396916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324e0eac0507914df6359b7dd213c8eb0f542b5ea36e7c83497363556c27d337. 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/QZK6H2362305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cdfdabaecf1a0b21fa19e1c33cc373a8f3a412897ed8dbef340558951601de. 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/QZTAY2393956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014cbf39f8de347d3ff9518f6af400f1c2fe9fba7331a771e5823a75c492967. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTBA2317657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e00102ca26e904fcbe8e65d4ba75604651769e087c14472506fadab2a870d67. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZK6Q2443797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ea8e4a28d9faae6a3e7e7349951e5d6c3f814eb3e0a82eedd25a9fd1bef6c. 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/QZK6Q2443799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707f7b0eedba4d60a1a217384f6789dac8289c0a8ed172d7e0e5c5cd9585083. 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/QZWFE2469204.
The Legend of Zelda (Great Fairy Fountain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3a26fc445cf8f93fcc119c6033ff4936ba23ca9126c0e4c9f462d329c614ce. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZFZ22515470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286c584f907d2d740b080a1f9f13efbe7377bb0d78aee88af0fad40cd1c6b915. 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/QZMEM2510258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004771140b640059f7b5d66f67965cdf5590491a468e94372b7515308f1700e0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN62532331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce6c83ac61b0655696ef83734e50bd58a233e732d1952accef54885f94bf38a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHNB2514735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f97f7724df7b7e0de244dcecdd41f72dc788523b103b95c9c44ef0948c69a3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWQ2558749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a24a586c62ac8977252ce6288198a3b887b45e3b9774eadbe5dca6a13e925. 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/QZNWX2528044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cdfdabaecf1a0b21fa19e1c33cc373a8f3a412897ed8dbef340558951601de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAY2393956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebe80a432f7b33a01d22b846aed9a56a943ff8e67fac2ddbbcaea9b64309c01. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWX2528046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ca31e55c0712db6289b5945bef638ee202b2a6f2b7184a2f6094beb633b42e. 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/QZZ7U2507784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc4642b15b5015dcc00954042c3ded354bdd80949c77581265c0073ff79b3b0. 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/QZHN52324058.