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 0x45a8ccd8b2e5d492c45e163be8c1d381d9840e207779d9fa3f39e836f973f0e9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c26a0ece-d882-4c70-95fd-470778398335.json and https://artists.proofprofile.net/proofs/artist/c26a0ece-d882-4c70-95fd-470778398335.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 0xbc98f20f03641c7f580282318eb18c12e55fb989cfb5b3dde83ae3a054994955. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:10Z), 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/QM4TW2228326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5920141c4c0bb8d89d526a8d6df8ea753f1050e3edb206a82a244ec0eb42f0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TW2228327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c768537d348b6c604e829a81cfce9bf7042644bbdc3e83220523cba6f72f5f. 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/FRX202263623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964418d661fc7efcfe32888ee5d0b2ec5903437a0c8b2c875ddcb7e5c9adc687. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/RUB422202925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f18c088637d0d99f30da78f00909a22514138a2e51d177b012845b5d3c968. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:11Z), 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/RUB422203164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ebe00b0648ef7fe7f387262461b8f363b5dfb631806ebadbcca9d043dd95f4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUB422203525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e9425294e4053009d182342a89fd007bdc9dcef9f80f93ef03674456123f8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUB422300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c6ef317544742decafac3fed16337175c5ca814d7a24009f9db1fd763943a3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUB422302674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb03130bd2ac617e175975d3f38a1597d2dd79d8a4a06aedc32c7099190c6967. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/RUB422302396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade4ffb82c3f238bae97806e2a5e38d6068bfb8bcbc7f54b2b44498099ecc5c. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUB422400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92db7fd330db91f1b511ef3b918110997a93afa36cc196f8c6d6a73ca36c866e. 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/RUB422400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cb199a890b6423cf0189b73284fe233660d73f959558be1ceda2a40da9fe63. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:07Z), 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/RUB422400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb745b89439fa40d3b6453a1ff2d15218b766a38207d5a566e4c6d1db23369. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUB422400544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5ea116c3b610efb3c4956dff593411aad07c00c5c5c95697f0f29c989fbee7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/RUB422302472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2660e262a1b90d809acc5f324952f023f9c8261af8d324f63c7237c1d85a5bec. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/RUB422400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220a6bbe99556e61175f8cfcf3545e4dd722866480009f712be52b09eb0d4c39. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/RUB422400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da9cde02a61f093f1540dda29abd5541c07f39c3011149b352cf2f2f34f7175. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:35:34Z), 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/RUB422400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b719494327c4dfd24997e5cc228bc49df02ae5c9e623fcee49e2bd453e817. 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/RUB422401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60907dc6a667d45da857b9ebf068cb38dc0b0ac7ac791ba7ae48a332801f50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUB422403160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2d62cbb0975055b25d2b78eb27a9c7772afee196de29c005d10e4ccece21f4. 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/RUB422403584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248d3116ad0551a4330699f1d082dc9f5438628bd15215e9c206cec31377a67b. 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/RUB422500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ab23b89a777b65fe7aa5029452c4799b071db69a666cd13b382ddf4f72e5ba. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/RUB422500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe43c243cb98aa7d31dcb25098fbff90a7f771a53bef45f3ccd0f960a4455bb9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUB422500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47dd3fd8d447dc7cf2fecd40820c6808f735e0b01c06bb773cfc5c775ef81dc. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/RUB422500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84d2d18f275f89f1d98dda46381fef8fa7a664281cad9a45f8a3e348c936d3a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:59:03Z), 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/RUB422500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2bc9eef5959943717ce72833b6fa5c621fb9aaebda880b31112e779a1207e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUB422502566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ef747c2b0778890bd13424448d9c86bb59ef91f6cc1655198f1c6dd3c26338. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:07Z), 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/RUB422502567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c5707d1a64acfae69aef2241af197f2e1ae5c945fdc02848ca4fea5cc2e7ee. 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/RUB422502568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4489e14613df5f7a9aae40b2a98dce561294ca990848f67a9ac2dc45b47dce. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/RUB422502569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ed474112bee268704642902860425259891fd3aa3c57aa9222968778eaa244. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:38Z), 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/RUB422502570.