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 0xe6484760676df09a2aefd9bfe2b9691b49cd629f39d5119680d3c5e1482a72cb. 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/6e203f14-5a1f-42c7-95a4-4c89d578b549.json and https://artists.proofprofile.net/proofs/artist/6e203f14-5a1f-42c7-95a4-4c89d578b549.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 0x581b6a32494af50726b246466e13a2536ef2f4b2733322bceadef2f043a6bf15. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAZ2214411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede4629798895e15e042ef9bb3218a44e79325282fb94bf52c59810ff939351. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAZ2214412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161e0ab75d24115d5dd7b0b09ed82ae78ac538a94be4e6975baafe5696aa0f2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82228743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ca5cbe50e976b82d8c5c00e4e716ed997fa95ef879f12fafb006d08d9aad56. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAZ2214413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cce1a5104ce97fee4c2932653b48e38038ccd2a6f1ca0579a9afb8f1163e84. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWU2207724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940e405fd3257d6bb63b1f3b655e460a0dbcbabf73c4a03de0ed1e72b413be7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAZ2214414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ffb53f71d87a33ae050240245ba2a6a380b6066a5aaeb4577b641a9ba5f977. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAZ2214415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044263e4ca219fa33e2c11f38e5f9aea90c40f0fc3b65a19d895a85e8de757d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505629762b52a2eef6b2f1efc1dbafe043910e309e5d10af4a4aa67491d62889. 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/QZTAZ2214416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6f2f25790f144af40a4ca1b456bf1db2875a60231522173a13f61816e8f861. 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/QZES62435175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446d4bca105f69859b8a32034995b83f3f0303e6990d2b2abf92cca2b8cb3e89. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ62497596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e9105d8b8fd67ef8db07eb60a1644726d10c2cc92579ff2752dae001ae686. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFM2326756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087014a51f615cf35eacaff804b077ed64956858658f93e997d2ba271acc2d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFH2354026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035e91f2de54a91c17100024ece57aa8d453db3e47857a0ac4014d115ba9434f. 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/QZWFE2370451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510dec0bb5346fcbb890116fa16adf01d0f834eff18cc131bd6c517d8c879ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB92334381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6a84a4572ce5dbc5707daa86ec79f7e317596b6e982f73cb89c28e46a92d70. 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/QZTAY2327243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80619d168a94c7973a8b069dbee414607746517035a7fc7bae32aac6d11efaf8. 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/QZMEP2399314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330f8cfb8f470590cb5f640f7399e4ae1331daf75cf7638cafff2f82b1d2d286. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN82397486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3717224275169f96cc4c2dbfa6aa6f206cdffbbf50f23617590edcb30bd6f8. 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/QZDA52359518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3cb41b589059178fe2f29cacf4d8495f3da4be96d2c753b8965e104a9759a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZTB22291907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f790f8c907af95ad8f03ac40901e3e5e2f32d663504d9b6ba813776a1a1982. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEM2258112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91a8f91e74ef476edd0efe918b3069e9b91bb1f6977e7e715eb884cd79ee66b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6F2200946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044263e4ca219fa33e2c11f38e5f9aea90c40f0fc3b65a19d895a85e8de757d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161e0ab75d24115d5dd7b0b09ed82ae78ac538a94be4e6975baafe5696aa0f2b. 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/QZDA82228743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fbf34cc86cbe915c0732a80f42815e47b42e5e9d6b30d35aeaaa5e706e3afd. 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/QZFZ62256835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed66abb6f72d37cdb658046d1a5e9bd60d397e40a360d52c6d946b0f535d30e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6J2182469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a53b4a8c51a7fa81a194cc04aef26efdf45b7f1b808edfb00f46925f2942bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6J2182476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433022c12745f852e54fd9abe97eee166871e687706dd1d449d544f1440acd58. 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/QZHN62144690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e3f4bf7088a9c28f80d866b1471da997715c1dda3b49825bce9ae4f346a4b. 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/QZES82123213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f273d014cdc789d8cc42e7279b2e843bb60c1f8d9e34e05f8db0c4b115ea3fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82195619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01f587ba2ca1363e0517fa63a7deffb3531c7dbe8d54e75c7627e561a1531d. 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/QZDA42176007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce5a0c37693ad3285c50441002d04ebfb62ab557da5822e5a4411157dc4e986. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZNWZ2032692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae839913ee5341f1db64b28cd5732b948989feafed29bdaa33a25ff8381b60de. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN82535018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbb45c44eab65eb5995acd0ae53ddf915d0f8291861ccebbcce5020c0898eda. 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/QZHN82535019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40427744970b2e09ff3002351c35d0bd02c03df1a18570bad7a8b155f51f01ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN82535020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac9c86691d63e75af0e4a74c0b24b8befb0e3c2ca4602f800ad9f0fb72f278. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZDA72594760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c9b970d06d4f2cd835f92f22ddf7e97d40ca76a8d24b2f37031a12f899375. 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/QZZ7R2470294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5059de249ea07f2348079ac9a94a6611b548a5aa6ad134f406532c8c5bde7f. 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/QT3EX2470185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c9b970d06d4f2cd835f92f22ddf7e97d40ca76a8d24b2f37031a12f899375. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZZ7R2470294.