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 0xc072526650fe271c8a100d3bda42f35c5b8be547b298ccad5f221fbb9431f736. 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/1927c5f5-ec5f-4f03-8147-d5e29b543692.json and https://artists.proofprofile.net/proofs/artist/1927c5f5-ec5f-4f03-8147-d5e29b543692.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 0xb02b3cb51ddfe30bbdf2c14964d3b1ee629bfd00560f4b5fe6f2150722d0ed54. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22222167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9037f46fb38d3581abdba409e342051c085ec73ce4867fe5e22192bd19e355. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22233160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1751bb093b86342195450cf22aaeed59979e7c988135948d5955aace35ecf33. 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/UKXN22258656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f4fd1dc7df8f50aebb486d7b0d1e1a8d8eb727ff376aa8ad0c7600e0056732. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:04Z), 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/UKXN22258666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa983b5ee882dae01d9b756791e2c65302441bf01025d1909d42062ad1bba30cc. 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/GBLFP2319565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc26a42b69bad297b01c77c54e55421ba035a42cf8325c22c3e215fb98de978. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UKXN22331208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d0a883098605f3f1a8db084599b78bcebb42a3a3c5acbcbbd0dcd694f75b33. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/UKXN22331210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6fd7ec78f518ab56bbcbc6ce8fc72db79c4acc773c6784e438da19906f94ab. 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/UKXN22344883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe50fe19f729814305480656fda49e6819486862e4e39aa1eb06685d3d9fc449. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22392624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d89bf2ca056266dce62a8b41c98221c4352a2c472d1efab0abadb762e1f0e7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMA22334046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc1dd5c26284704d58c04804f3768c12be589a3cb3587a5d9686f7d23acdef. 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/GBMA22341805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a489544f359eff90b111f0914a1899bafd626101c3e38801896e80f1c239482. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:31Z), 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/GBLFP2435291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f413f768d93c7b90829f7459a08bbbd9c8b65490dba839ba5821040806bbe1. 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/GX3Q92402477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d304efcf8f26e2be8f5bcd74556f40827fb3d774ca54fdd872ee7e807cce9c7. 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/GBLFP2487921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9892d2228fb21a725d1b9590037f29b95a581ca5463032aae402ed95ba30426. 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/GBMA22380662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9b7da025c7a4320520c25a44d6b321cdc3d3233f4de79540e7392832fa35b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX53U2390209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1403ac60aef39ac34c70e06b26a95b00addaff28536c8928a632e5012643462. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UKXN22552600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d820ed9f4766fc837c4f7d60d9ad4377f563212495bd9dec7872f11781683. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/UKXN22557102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37831f861031027c9b12e0fe528c804ffcdd8aee757e2cd6a28bb80b8d81248. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:19Z), 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/UKXN22574576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930812b9d2f0d4d8cb0278e77eec928a4ce8b7c88f1e44eaff89deb927732cf9. 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/UKXN22577554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653a10098263bf63a1a05d207df8f3b08ddcc3a5fb6053440c70d5bbf88ade01. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/UKXN22577896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a63895ebb0f46fe3422cfe8c45b5f04da2e79083c11f3df3d118fc43e9479c. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GX3Q92564175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6594b684af01956163039667f81972e9d59fcf7ec329ec95a26cd31b753cab. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:22Z), 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/GX53U2584740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca257500285ef778b8c9430c3621d0ad57b64a830ceb4e52c781d667d5d2fe4. 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/GXHG92563359.