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 0xd885b2a905046673d5865aea6e7e84e652183e30453689b42604985489d361b6. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7489f618-c44e-405e-8694-1d5f505bcbce.json and https://artists.proofprofile.net/proofs/artist/7489f618-c44e-405e-8694-1d5f505bcbce.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 0x84119685be27a09521925c8e22c201f315bb7d737cb57a0f9b8153dec08c764c. 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/QM6P42217159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087b1a8702c3916b77e62240f336ff9aa723928400d9cf96bf21e92dae976fc6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:20Z), 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/QM6P42217160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba90a76744d8e614595b2ad87daace338ac09e01ee3935f68801abe9fb9677. 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/QM6P42217161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869aca10a79cdfb804cb5e716c26622c5265cbc2b11104a214502f21b37ece35. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:02Z), 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/QM6P42217162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bb48b9b78da601081a8ebb0add15c3e063864289d4a1862cdc38165c189fdd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:11Z), 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/QM6P42217163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9ef56b59656ea4d99ad4ebd04fe7f0647bb733f9fc2097f879f5914906313. 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/QM6P42217164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8103c53e585656a1d5e7550bf7edaf335ce02faac8d9a74dfe60960397020f6d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P42222180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc337cf05e78c82a87f7286b4d0ecead6369eaa0e4448c0fbb6c49db022b6fc8. 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/QM6P42222181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116598b96461622fdb2fd520368146530849448551ae69b5c3883627240a9f1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6P42222182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046b8cb639f9080bd0c1520bb0fde39ae53c013f8684f04896235af301a9c513. 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/QM6P42222183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c28d89fbb45ef39fa75efb2f61ce84a2a0d50124444d8809906b8371277d042. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:51Z), 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/QM6P42222184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6e9c5d6e3741e85e976ea02846d668c0c11b682b6cb87d08d91863b8351ba0. 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/QM6P42222185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53bb7ce7b67b9ba5809559fd120bfa4aeba3def4575f09af7fdc73a139a76fb. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ESA011823266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fceb261902592e3e99092e74c1d92484c0443db49e3384d16e089c38848260. 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/ESA011823267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe714e828ce9771052288d495f003e85cc446f75b2aa0ddce6d3eee33eb17b3a6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:26Z), 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/ESA011823268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51781b4c267c039f06ce80ceeaa3eb5797d046989e79cb21857c9a32c879f99. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:04Z), 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/ESA011823269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e780cc6e6fa4431e4433691145e712a5550a7a54ed203ea9d5efac1b0145d32. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:33Z), 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/ESA011823270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0db8a8d6623097de5efafad7dcc3e452c68fdfadb8921ad97704c93508d8040. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:02Z), 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/ESA011823271.