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 0xcc746813d89f58d4c7846533339b7a89325af0bea430479478975413e779d34f. 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/7bba5f64-0fb7-40a0-acbb-06c03e61c096.json and https://artists.proofprofile.net/proofs/artist/7bba5f64-0fb7-40a0-acbb-06c03e61c096.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 0xb8bd7f509a2de645e5c8e172de4ed609438e17b80cf38b2a729dd7d7cc58b871. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:29Z), 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/QZNB82025703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b0b6002689381faf475df04cf5e66ecfc2e65fd4a086a2ca529609ba60dbff. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNB82025704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb805ebab4a0604ac0a767cecf8e24c7718af8ed6ab6ba31db1f1a19bddce84a0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNB82025705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ec1d930e91d604231576d674925ee6d90f24416c6e828cf927aad223ebc2d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:12:58Z), 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/QZNB82041618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ceff3605fb65da7d7e1d48c577be2e232e77bb2018d1370abfc789388be7ef. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNB82072537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdacf4d0b849cd0ae2ce709ba6528d08d77c9a84702079d261ab8303e2e22e1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:25Z), 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/QZNB82072538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ba4298034380995359cb8863668e72d3ba1d5005155108b5d76de0e7ca0ce. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:58Z), 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/QZNMU2091818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7c6a77790ec968afb726a565916ddba3b37ccbd6bea624c11f4419aa8a6a3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNN22029072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe3580d7e300479ef108dd2c2d81d4a183fb64622461a8a2648d83853e33f92. 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/QZNMV2152817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d75fe1b2e02897fd2d49973ea429f015a2c73b700167d472de54846c72d3441. 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/QZF8N2111048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669515e6f8dae42ddd090c48acb2fb0647f37b5155616586d665858137c0900c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZF8N2121084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea86077500161a0a08704962260b3474b0e8ebb8a47371768e7c285ee580997. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZF8N2195676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5fbd087d2fec104f41387215281896629f23b4c71ce10fa7c107a7ec4f9678. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ52152750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37328e5af8f64cedc5e82e33c89ebb929768ba51502cad460edf14b90c8aa198. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNMW2172753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2421710278f46a800348d02e77e7a2b9d06ff52082d0bb3d1a342650c693a9. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZNMW2172758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e81e11b74109650b752006228a2ef1da0812f2b999df4ca265dd80b303edb03. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNMW2172759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe608220e6ae8b1420eba02b33cf8a51cdfe709bd842a8454abb999133cfbb95. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFYZ2212402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325a834966d9cc956297a6930cd72123d2cb242dc2d66afc4d4c6602a38b04d2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:16Z), 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/QZFYZ2209585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaa79639f5f09cc1065302732c9cbc0f24f61507d1d83c2ba2eab1a34320eff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES92291341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cae403bde102241d00764b9a7c19db019a832e2796cb3e925772319f59c4ce. 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/QZPLS2207720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45bef1ee636fe480721117fc07328e10f76dc89056d062ab987d4018ccfb92b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:56Z), 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/QZJG52409853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da569ae573eae96d8f6444188c8d7cb196806250543b2d3dd6125756e7de451. 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/QZRP42426658.