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 0x58823f08f9afbc9b604515381e9375e0ad23c347c621cc8527c018708e9be1d2. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/227daf75-6022-49db-b08d-ad2283867388.json and https://artists.proofprofile.net/proofs/artist/227daf75-6022-49db-b08d-ad2283867388.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 0xada276f9593b873324b21ab58fa811cbe5d99e21e62ae93db1f615c7958143b3. 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/GXH2J2522201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f9bacf8dce9becda7ed05af2b737652abaee7c918397c52be72769e172e8df. 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/GXH2J2522202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7916df3743a33405497db8a0bce461b04e8990418d0ac37baacf0e158ea20395. 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/GXH2J2522203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1600e9f73ebe1b8d443430ab584d232ae9f735f9150caffdf040a7fa9c8ab8b. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GXH2J2522204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d2c71781c0bf4a3a9fbe469597e389c56acc811f8d666b77d8a275b1cf45b6. 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/GXH2J2522205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f33fe3bc3181b3e94f4eac34bf5788b396411367c61ee10d32e4f82f9eecdac. 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/GXH2J2522206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a80e678a5a13c19e755b2594380c0b5b4b9ae5883e9caa2d394ab40de9574c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GXH2J2522207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794390c70396b6e08201cc7a9d0d2784fa64f03b7ad0827a67ea2fcef619c58d. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GXH2J2522208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ee249efdbee0991ba520bf0730f6d8a3294e306586eb3b4e8f6362e2fc6c75. 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/GXH2J2522209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f043e3078ee3b7dcd092bbd601ceb1fbfdb9037420358e754e52815ad336efd. 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/GXH2J2522210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d323e67280fbcbf0a9baf71de853d7f50e43c210c18025de72e42b87080d2. 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/GXH2J2522211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5b16c496b9e6f52530c514d045e33a21a2e94b9a1011a6222723bbdc899761. 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/GXH2J2522212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfd962e5c12ad5e8303aadb8f564d75087520d5dbeafb4e192fa000940a1136. 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/GXH2J2522213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22fc3b25ee6238fbdfc9d762d590e81cc2703dfd1efb3f44de8be073f6d0cc6. 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/GXH2J2522214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00e98ddb45683baf03a338c74d2867c69261446ad8b4014dd972790a65834b. 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/GXH2J2522215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa33c133d6ee289d87c95ae9764b9dfa3ff7666bf5e96eaf651d66d7ed52a769. 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/GXH2J2522216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d2db27210a5e65011ce86099250770f004bde6454fb8f629050a4c9a6b31e. 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/GXH2J2522217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6046a368fb3d02ce53ced8ea628be2cf95acde220c779e110cd62b17185b56d3. 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/GXH2J2522218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfce9cf0b9d38d661284a2153b4c0fdfad0848af9cf9b6262298422240a4214f. 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/GXH2J2522219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12c30dce34b86742a70a0232c2b202a9cccbc0fda1f2a158a8f4cd670c1a0b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GXH2J2522220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2377d143e50dbb49a852acabb3ac2a0c820bbb3aeb7910eb1884da8b4dcc21aa. 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/GXH2J2522221.