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 0x36c05a72ec93f3b491a5fdd9c2c99ceab920a2ffb141fd55d765f807dec4a7f8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efcef815-01f0-48eb-8d63-e0f0202f0996.json and https://artists.proofprofile.net/proofs/artist/efcef815-01f0-48eb-8d63-e0f0202f0996.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 0x8e74f2adb9b066ec83149785f7a4a750abb0ef78e7872517255b0cf5969f243a. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QM42K1957474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1b9970dd39d6f8f44f799f97d67954f685de6c9187138a19f090ef7055573. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:33:55Z), 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/FR10S1671821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ec25a13b5f525ee31605ea5b0cba53e1d0b9d89c4137cb496e1b18176386d8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:07Z), 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/FR10S1671822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2784f366b9d9ed1ef439dbe345018da45caff6bf15033df70d9c389ff01f27e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:32Z), 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/FR10S1671823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11310adf0508db1340585538d304dbf7be5aa7cee2ef9de35e1b56519ebd22ae. 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/FR10S1671826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6335396ebd481f73b54fbe601dce26ad4fec15dfe4b40361f961b9e8f19523a5. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FR10S1671820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa605dfbae9bc6b0bebf04fee9b5f6830a5193b7d457bf75d2aaff0a39273f880. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:36:01Z), 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/QM42K1861729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898a3185fb7ef85332def4b2d3cf23b8287611126964b581a27be085d70bdf6. 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/QZMHL2200484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b25cff8b46d6f34ef619c6a34c4e6b12730a1d5d35ed8501f26bbed5bb9a1c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/FR2X42348412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3140404fdd458d1a37b21d9f062fb697b176884cded0490de10965624ba6883b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM42K1907430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaa570064b6d180b79ad490ab946b9524e5e7f1328a2ad9228dc012ab52eaf9. 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/TCAJD2468027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346141ed3e4e396c17297afbaec1801d931b4d654f23f20558e0f7d94facb592. 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/QZN882521315.