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 0x9d6360301ab985f6287e15a8793d792594370fe9dbeab4ecc647b34b2d17d7f2. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7c7eae2-eb09-49c7-af05-ac52f2506bea.json and https://artists.proofprofile.net/proofs/artist/d7c7eae2-eb09-49c7-af05-ac52f2506bea.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 0x480f6b4016519b49f03b489c5bf3aa57f3bd73cf88c3d4976297785ad1c22647. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USHM91974852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17c4d756711ec99678fd3c820ad1d0a09f0151fea14da47522441445dc002bd. 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/USHM81957601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616177bdc82344c2dbc8d4e4e8da397b7681be64e4b5b18187a1e0400f8836e. 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/USHM91974853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205cdba20debbcce9ef6677493a9cd9f39e91ca5434f0d77843a258ea913a8c5. 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/USHM91974854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2bf2269857407ec55c7d864285f66817036d1c4ca085b9ebab172790e63027. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:25Z), 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/USHM91974855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118132a9cf75b5cf324f08d5876317cd98349f5850e914103770ff7ae04fe26e. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:01:57Z), 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/ES71G2337885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bf0741ee256f59f7117b4adcc46a970634b16c5fd90f72d02085608b061eb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES71G2412573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bf0741ee256f59f7117b4adcc46a970634b16c5fd90f72d02085608b061eb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:32Z), 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/ES71G2412573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68856bf09b579bace67c0d8c996c8ea023f2ad9b844764f6f102a7419d30c1ab. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR33T2586101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68856bf09b579bace67c0d8c996c8ea023f2ad9b844764f6f102a7419d30c1ab. 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/FR33T2586101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68856bf09b579bace67c0d8c996c8ea023f2ad9b844764f6f102a7419d30c1ab. 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/FR33T2586101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972113959efc66a2003ae77edff0d289968c6a3ccc75bd0c937f3135c1e09540. 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/FR33T2586102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7288908e1107d39edb2226bd95076733326cf1b58f63433d568c55738746216c. 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/FR33T2586103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c97d6907e2c11ba054a400cabde417146c10455625a7e9e8d380ebd053496c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR33T2586104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9664515a1113ed23814044a1333d4ce06c8485885893f1f6605a4fda8fec8963. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FR33T2586105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4311f7ac66f590d949fbdc2056c2cd9bdb50a5fa6f5b04be47a0e5f679ce9ddc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:13Z), 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/FR33T2586106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4360570e0513747f5191f2819a35bee604e54e37a7330a8aa6f4e623d3fa2559. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR33T2586107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb044157119b28f8616e7882c1e601230e4504a0e6e49229fd649c5ce6d54ce. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FR33T2586108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09441d3577c3c7c6fa1444cc29d768f26e7f6b28cd370d3e3ca224eb1f14805. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR33T2586109.