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 0xc231f8c05e90969cd65fcb045a1d6bfdfb936637d1ac56450677ff6c29b9e343. 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/063aedce-fe6f-4e36-8f5e-0886089be97c.json and https://artists.proofprofile.net/proofs/artist/063aedce-fe6f-4e36-8f5e-0886089be97c.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 0x0366eede574f6274f58e087595e81e5991686d840050f19bebcb219199f0063b. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZHN91943533.
Summer Is Coming All Right (Winter Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fe41c7bbb950160c0c3d7be1319741ad7e9edc37e7bc4fdd6907e493d4b3a7. 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/QZFYX2045115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15865671e4085ae7c9e0a5871d72472e411708d7935b6a5624609567ae4f640. 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/QZFZ62013321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e5aa00a250db2f75e42450ec6f3a5bb40dc0c8d2ef139bbf202dfdebf9376. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZDA62057235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e1b0667d21497b8ca27b3b571ee1bc54f6f0a5b2a2480c6756c1195a440ebe. 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/QZES72075346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc130bd4978bdde2bff83f27cf28dd806a60dafbf5e47ce7dbba7a5fda9f941d7. 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/QZHN72028478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55071f547a33964ca5f02888dd2bad6f543ec88c46bb341afde726915e0ccc5. 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/QZHNB2016390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab054cf07048354e844b0babdc3423797cb73e54cac9b8a12d6d3f52ee3d13d0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6M2064595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b0b8defd89091f0616b01b7b9e59086de0584028817ec085793b11253170ea. 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/QZNWV2050790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7510f2f50a92ac6bfd116edcdbfb8d5e2a394457d9d49011f2f95c52a878a904. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZFYX2167502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12dc852ff7f0ccec1dd118c3bf5729257afed254988d8ce025aeeea9e801ff9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA42186375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfbe111e96ea7eac1b59dad6f22a33d7c2d24859f37e105261c947dd4e0e2a7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZHN72141583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef1c0377d3305cc4cc8da39f94e6d8188de9ccc8b3fb9bf66f521c709a09409. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6P2130224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f741283d99a710b1c4b594ad6ba192d8e80d90a22137c866b9cb8fed2abb7c. 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/QZK6Q2173339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe660ad5f22f4294f9b51bb6f7aa87a6dd3d10d819ef56153da1b2759fb7037. 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/QZK6H2146598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc227b39a07166cd4cb8ef835f023a36cdc1ab44214e49dde48d8f48b2746d107. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZK6G2156684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200960ef2e40c2f984a6390a9ac473813adca3ab9dc7836bf5574917fa8a742. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZK6G2156685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24711c5067c39dda447effd5c7e53aaa72f837c7fdc391c37b779249570b2df2. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZK6G2156686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed00b31eefab21bb94151cfa53e55f022b6efa2e042265f297184a3201c6830. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6G2156687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e9c77207769b1e3160e802e8671792b55bba529140d048e5d96445f8d64667. 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/QZK6G2156688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2fde334cf48709d81a3bf22bf0f5e3bbe5cc418102cf536df9ec909d2fe794. 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/QZRP52169175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574506a5eb19a7274a282d9e5c24b7d26f0c4c8e8d7d7e05b9cef0c1672c6744. 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/QZDA82287263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70f8ad93c76dc62b01b631492c357b7fd8cc22151bd3b2c582142266ac42116. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA72231218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209ac54eb21f233997c816f0d546d371eba36dc1f76a40199d0f96cfe47e2dd3. 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/QZHN52250814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a051e30b12adf434637660138b7dc557774a17fe36b6c5750822402bcc0d6a. 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/QZK6G2231613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867859855a5636cd8fab002997991655068534a462e7e128af8fde0e306b8b6b. 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/QZK6G2231614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5928388aff814cf36989104d3a9f822ec99255f2f406a6244cf2fb44741a09e6. 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/QZNWS2241293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9629c63250d79e57968e9a78629dc062a34206a399803d699b7d2232082fb99e. 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/QZTBB2269176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fb07f74ba7125f617974987538a8eb591d97a3304387bcda9f755df9ef02e. 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/QZFZ62455687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2d953e206111ce8e85877179be9880ae7547648b985f881d5f69bf83cea39e. 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/QZWFP2331623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e31c8a2758f82a60bbb97207b0d6612c96faad70c6728ea1ba8c908753045dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6Q2497667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece0afdff366d37ac80977609934c9b486688c9ed4480b1fccf4ec487a57be8e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:32:41Z), 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/QZTAS2464803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80cee7cab696fdb9e043d1971e879ffbb3f0330e5e316a1a552fc80d579ece5. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:37Z), 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/QZWFM2484954.