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 0xe33a49369fd918b378b6513e4f85c8f8eec245eee8603aeff4547cdda0d76bd4. 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/8f2fe786-a444-46c2-ab86-6212f8d992a8.json and https://artists.proofprofile.net/proofs/artist/8f2fe786-a444-46c2-ab86-6212f8d992a8.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 0x00b1d54f7867762c5b58b7b02852278ce8d9e728bbe20fc233169193e77b1a65. 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/TRAHZ2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8189b77a52b1c6031e821ee34ac357889a2750e03c606a919836c8bcf71e2f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TRAHZ2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85db423024168b54cd503f23b24c17d88f09ed7e88c98904e7967c87b20e9ade. 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/TRAHZ2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc33b356baf86e4eea402c86748829cca459d9de33b5cb2c79bd0a91ad3608. 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/TRAHZ2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775564be99fad03b3eda3314d392d4945522b360519990e069f4b5c9742fc71. 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/TRAHZ2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b98767245d78659aaa795c3a5ede959d642c0d984c0b0c55c267a3d9c39112. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:19Z), 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/TRAHZ2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc394ed29e3941fb01a039506a2add1883d6a77d216ad4adc8fa35a5cf2aafbc8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:09:12Z), 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/TRAHZ2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfad64630e060cb7aa01fe547da331372f5fefbe2b5083409fda51515394d35. 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/TRAHZ2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f97f5c1f089677fddbda09fae161daa0c73d2fd86a68df7fb041a135c5d388. 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/TRAHZ2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00606b9c2c9be25710b327cce755c23dc890b4326633e5a3109ed9ee0c36222d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TRAHZ2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68af348bf6114b6e0f64ce97f178d13e15f65bd348474608750b272cb9efc734. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/TRAHZ2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1e3eaed00093e98dd6feff24a3ffa20f4b2e099945ea5adb815eaaba895eb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:59Z), 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/TRAHZ2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58673d3b571354406021587149ecd59329c6e10eadd32e590b41c9048fef545d. 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/TRAHZ2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47ff7083aa8354daa49e50358d67387bd78c0fca014b9ec8d3f44abb6d25f0b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:49Z), 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/TRAHZ2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0095c8879c6aa61f0a6bffe07b9674ad4b632f9c214cf2d3cfd20ab6612093. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:25Z), 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/TRAHZ2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ed85039591aa58299d84400e7e631597dfb2c830426fb918f19c710051cf37. 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/TRAHZ2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156b7c42e43f736c5d2d0d4c18cf9ddcf3fef91dd11defc2b302be89a8092394. 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/TRAHZ2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8380fb1639cd17602453b03deccd4729abe930b7233e8e3b6edacb9cb5d786a8. 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/TRAHZ2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3c6b41a0e18a7a5c8b2bad1cc486dabbca136bdd4e4fe1f76dae42ea839ceb. 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/TRAHZ2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce056b14ad3e2ff4e8744aeea77e58f9ccb0b310572cb2246b534967f45ccc1d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TRAHZ2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24098ccf9d8649eaf92c1c923a004ee2ab3430f685ad71d42dedb272586da1f8. 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/TRAHZ2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfe0e56b6b58b25054aa7f1f12e51c7b3e0324d80334ad1281b936dcc33b2ef. 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/TRAHZ2300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b84d02720c4dcfa98f766e7c7cc0f4c0487a22a55a30745826e1db1491a20. 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/TRAHZ2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c3124742b9e56c067b7ad21c14463bc7c561cb6df2006868e0637c21099f90. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TRAHZ2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb05cf49853a176fdd1ecf05decc101f8d82ffaeb44adc84cad646665f36ec3. 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/TRAHZ2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a77269064122b6ffe85b4af928271f42d25627daea14d5455c386ece8f6ca8c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:42Z), 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/TRAHZ2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5a2d46db626777a07b49f5b05b6d48fa594baa541aa90d1c2e1230c429ec8d. 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/TRAHZ2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298949bed3a4e0ed976ad3e366c437fe3a1a46298b6430d9c149bc31aedc1d7. 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/TRAHZ2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e2a264313842c2f9081c5f489330a47951848e122a7133c507fb61ddcd8276. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TRAHZ2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf09a17620ecf4d1671a3b99d74dbd7d69ae3f56ef35838a194e02f9e824e1d5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TRAHZ2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a58db5bc66c047b4a1babd62667412a0f40a17f73a3fccf5db514ed574ac3. 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/TRAHZ2300108.