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 0x579d800be693f1eddbec3f84a19fd5eaa07153e2ca2c4880f2b5bd4e13097487. 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/a5117be5-85ee-41f2-a72a-36b59e7b8ab2.json and https://artists.proofprofile.net/proofs/artist/a5117be5-85ee-41f2-a72a-36b59e7b8ab2.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 0x2b479334302fedf3da64f9ed59338fcb5dcdd5e948314937174aa6881449b7b0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:14:23Z), 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/USHM91742490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31793129bf98e619bf25899f8af37ca2d095072d4bb13d62fb903d6d7ac2324. 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/USL4Q1748797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dfa67cf5b99f3e20b4324113e14f359e5eb7ef118b0b00c55c393aa06c4daa. 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/USL4Q1748799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a43a7f079e0bdd4376ec59588aa47c604bf219c173f86ff67fca9ae438f678. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:29:40Z), 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/USCGJ1871463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef6fc9faec8e6b1e65916d44d7eab8b5b7ed38d6d3d7e4e335a09b734f27d50. 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/USCGJ1871467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276be0ae3a2832bc438ef75b00cf583ef45921bcccb226a32614593a7545cc55. 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/USCGJ1871469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9f62397944f79d8cad627dfd75a860c1658e114333134df380a4a103594bb. 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/USHM91728786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30feeab5b8a83e70c5972446bad6d3aa88c899937be59972960d968d10725d8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:38Z), 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/USHM91728789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad85886eba12eb727686a1095f4917fd11de449ea37ba44bbc1e087c6600e2a. 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/USMH92324048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0dd98e86dc82898189e5570124636379e16be78a958038df10b794931b3a52. 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/USMH92324054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f758927b5b75ab492b5c1e42b854b2c59c35959c7cf8c8e16d90da2b07c29. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USMH92324056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee365c0029aff134a1a8058568932edf474dd0c825b194a1bbfdbf5e4b18cb3f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USMH92324057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c1478b08dbb1ba98dc6b698005aed4f86d3edd7137feca0cbab948ba2e93f. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/USMH92324060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c526b1a72f6e5eb0e0759392629a0f25b3b15d56a8b961b0704def343cc447c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USMH92324062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72adabf6920f1c327d8d125316c7a4051a394c59c9b474d33e1c823ddd4b77e. 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/USMH92324065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36406636f8edae6ccc7f87616dae03562a5a446997006ca7ae6f3e3be285f582. 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/USMH92324066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c19cc2b0b79c87d924f27936b08fcec9f9135e7bc12533c03b605997a71fa8d. 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/USMH92324067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855b86085336fc6e056c9841d8ce158ff7f213ac933e4eecd406d8f9ddc9c899. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:27Z), 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/FR6V82381361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c69afd86902ee67771f8309c7bb6939d994aef88c96d620239e3c9dbc890e01. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FR6V82381364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cea5364d4b22659051e428da3a47ac8e762d53c68bf96d974396c4c7ab5f525. 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/FR6V82381366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d7bc8a92b65bd6b7bae6b58f6b712d282535ea6fb0ceb28dceabe5d237313. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:32Z), 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/FR6V82381368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd7484f7bc22cf487448cb800b9ea0d398f8052e499dfd1b81c98c3f14ffbb. 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/FR6V82381371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81985310497023fd54c307d4b73cf75b6be51aff9c31a039e241b85296627b6a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR6V82381373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414fbcca85147d84e5d4625a29964109114d8ebd73f047e79890930f218c5b1a. 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/USHM21890854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f962dd5ce51047d4c3ca7a26aa8e6f5b41df3b37ca630ca251b2fe3c6773ae. 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/USHM92593972.