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 0xec5807dd6935b3fc09a9ba4b9a94241f0c0acaf3a6a253b56717fc8893e45866. 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/d60172e3-6f4f-44f4-8a8e-b60b1776c513.json and https://artists.proofprofile.net/proofs/artist/d60172e3-6f4f-44f4-8a8e-b60b1776c513.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 0x8ec464db0edb3167ddff8248f10630d99a18bd5c13a51a9846d24c4f8e97a16f. 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/DGA0H2460859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923a4839a4c7d0f91c670020369d8012ba4fdf62d25bdd4897fa6f5f6987b43. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:01Z), 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/GB8KE2419080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed143433594d6de2e8f5ce7c07dc6d7639d8beaa6baf1d0c421c931811a9439d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:10Z), 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/DGA0P2447631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fb4a2ef745385591dff451a21cdc7b5442675bebb41317af90da4b7df9508b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:57:18Z), 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/GB8KE2425719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a12f47cec6b4feb55142595dcc6bacc104df24b5cc23a95d49867c10f5b355. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:11Z), 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/CA5KR2507846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f532f11b7adc224f853648d07ea185634309e34916393d538da0b29d58675. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CA5KR2507848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f7e88ba90de9d5657abb69701a9c9882aa61c43da940642ab15b973697959. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR10S2505932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf965060dda8a48bd6f89209bc045510d0e10fe04753743a0801f307756742fa7. 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/FR10S2540285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbca69f33427d5605756929aabeb98c4f5fa590e25ed80744cefca1048532f8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR10S2540287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0c75568e40c63e9337778e1d113c78208d54806e009acf0fc5da54e3870b1d. 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/FR10S2540288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b105c9198b991f6630543393bd74049f225b16f260d19a2ab75ee2bd071a932. 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/GB8KE2429148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5b9b1a3c0d34b1081c5fa36c94df756dd2d5466910326653a3d7bb73a9ff1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:49Z), 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/GB8KE2429150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff6ae3d83824744bf7c7d08cd299fc67d034ce6b474609fc117ce33b0c31ec. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:13Z), 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/GB8KE2502302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bb0145b64de6df487fffa1581deacce616cbb946a988903b37184bfe5b1c1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GB8KE2502282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d5d20358c421460ec7a56ed3279b783f491325a7363cc26ede8c81edac92c6. 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/GB8KE2502283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a09f2b44d076a42f1cb19ef41c30b13694b6a8f4a9eef5846e2f01a2e82c661. 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/GB8KE2502284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce5ae962a70b098e4f89159fbf6b9af908e69eaf871401a2d824f5726008c4c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GB8KE2502286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1853907157169dea5d3cd5d6e1a24c27bd61c927385edd814cf2f9a9924b226b. 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/GB8KE2505586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e93874366429993d13f0f0058ac226e216ca3abcef79f54a4bff25ec7c0427. 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/FR59R2521530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b69864c951b6657cda63bc42fdce7e4d442946b3350a37c97182f6bbce29d17. 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/FRX282532059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb6ecd223bdc00476ebd364c484fdcb5abdb16aa8b360e41dd279d32f698f7b. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:28Z), 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/FRX762513530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b53501f77df10feb19639ae60f7cb14da9dee367349da1d3de23739170a5774. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GB8KE2520905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d613ee967b32ba789015571da107cc25f46d061f0fed2ade2b34f98ddfa9a89. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DGA062502640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e50606fbabb2d725cbf3e6cb922717dc95965789e6990cabba614642e70d9. 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/DGA062502643.