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 0xdd48ff70e8835c3b085451500a91859f72ae9dc98cf8bd54f0a0b9915eff0d82. 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/e8f7275f-dd78-491d-bf01-ec82028aa2c1.json and https://artists.proofprofile.net/proofs/artist/e8f7275f-dd78-491d-bf01-ec82028aa2c1.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 0x97b52e623bc586422ce547981f1784de56683c2a3527068faa6808698bfe2fb8. 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/UKXN22398214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabfc15d8261c68d8de29fb17c7d1981ce721d65db59509003d4bd29b7d5288e. 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/SE6HN2343503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c60b4cee64e8d1600f78dd068a45ae727930a7e86f0d82b12d8a98de9e043. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SE6HN2369288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4377843492f9e9cfb7fbecb8eaa2dba40e5fda9549789576d43e28d08aa2801. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:54Z), 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/SE6HN2369218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4539c0fa47c2da29e8243d819951b8a130e7f46bfc4a600235865be5d99c0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE6HN2369251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27d12afb05c40b3f28b26dd9274c4cca1c8428a2b91db4c2238099bba82db3. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/SE6HN2369275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c3b661ed09b79028498cf557466900a8cef159d4d38535ddb1b87ba13f90f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6HN2369383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b8d16868474448ed6c8f237dc49825c3a8befa5319a669a2a85455fb65f994. 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/SE6HN2369286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb380d9b3364ca1e29b17d71f8a60f9af566fb030bb80aca0edf8da7f5f26459f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE6HN2369284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe4a3752e1076b227cdefb2256911deb29eec5971d3ded777f25dc3076bb2f0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:49:09Z), 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/SE6HN2369259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ff19884f66db21afab4533629566ea85831759e74d182b68659d6c85ffcfd. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/SE6HN2369294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2727552eb8cd532e7d558864ec5bd7b64d667e196a1b0b87ece55e9cbc01e0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/SE6HN2369292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe802d788b5c3a594ed513931a8e3b469e6476cb96069a6c2c18c87eb844844. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE6HN2369212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804056ff7930e5dc3d146f6324eb879cee6ed4b92aabc2ad99b07fe9684f4c1a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:11Z), 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/SE6HN2369296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f642ae4084050022a6de5aabecc420ba2afaade6bc06a739b4fbf8316d0ee53. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE6HN2369222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b9bba4f266b1aa3e459f86cfb3b61fab94e6d050c47c4e8167d187c5a2661. 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/SE6HN2369246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611c24868e13a4e8c6ee829dfc434b0986b5c848af82bd84c1084168f289baca. 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/SE6HN2374495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abcda08c357271df639b1a205ee37b7cd5696d2cd70c979cdaee77cbc131cda. 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/SE6HN2369313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018d3bda617db2774f01d2486148f998c4e4dbbcc210f9859b4170eeb0aec938. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/SE6HN2374500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae1a24d62d8ec02c86a134a2a607264b1855db2d19f2653ca505f97608bb0fe. 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/SE6HN2375387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda1e926085c1738feb990fa73be172f09ae100e214812a7b9e767e8bbafb765. 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/SE6HN2375398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482b610de715babcbcaf0c56afa279f86195a41a6d9f0f19f82709f364663811. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6HN2375478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ecf0928fed08a0c66ca316e31781aea85db83d0bf30d1f6705edf6fe2e6f50. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE6HN2375458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af247eafb7db35ad46c21b8ccab9b1d0f2ec47e5a653608d846a3ff2423a46f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6HN2375501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63faf2ffdf87f231766a1311d94ccba585c17eab0b56d4449d60929d63a4487f. 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/SE6HN2375475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdd56214129abe1ba225b1795723b1bcfcadc426d95d05b3de6f869fab6e4a7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE6HN2375489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701b66e0a71060ab62e0213f20705f93ada54d420a96f951691e975f47f8780. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6HN2375481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b06cbf35d2d05753b07b3964238b47666a693528daebf6965d6d34b5d7a012. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:10Z), 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/SE6HN2375461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0893af2b25a3000062a2874141cf696d284deb391fa20b548696d4bd098d4f62. 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/INR832302099.