1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbac0cf158cc6ed9cabaf4989d9a33d00d94969f2937e0729b5f14b9df9e4b1ab. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c924fddb-08cb-4f53-8caa-dd932b28170a.json and https://artists.proofprofile.net/proofs/artist/c924fddb-08cb-4f53-8caa-dd932b28170a.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 → block OTSBitcoinBlock must exist at that height 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 0x4795de880b8d3113a09a49346dc750f365037864d5518bb41d519091c89a45e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJZ2285179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd2f1eae4c00d48e5138dcfc41863f5b7f0a31c8169c8fade72a39b3d05479d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJZ2285180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135dbf67a6304bbc8abaf2ab60d97e2cff714d8446c474a226139b8a83d69ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJZ2285183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556f563060e726683760fa86a7d6d5a87bc88c65a4ff85e24ac039ae1446f9eb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJV2321057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed841f09c5ad28da2f3641d365fa5f2152f0af45a0abd0bb849148cca7df74d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJV2321058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f1da9d279ca39d2650eb535e6c2650ee101c545167e792a2068dc5a6279f34. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2321059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a968b5da96fc62bd172e66b34363d6d8679ac63ff18424a9b3b0354d2de94bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9N2245625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693ff5e72c20bcde6f23b2e76f58afb93ed5333ee75c477e0503df6e303e3b44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9N2245626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f575342e37c57c612004a244b47ab92e558452336ea441fdc793ed01645863. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJZ2284201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08b4d8f2a90f0b0683b43271f090f970026e4a2cdb3f345ff38417c1ea46ae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJZ2284202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15388754331f62cb4ab98241ef2a09a764a1fa000fb3f2a50651d127cfff6d7d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS1919559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a18e96ba37add2bee0bb00a4176b54e9dcb07b8c37636ef29d61db7b38d5b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS1919560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa03957de13ff05230a3359a83c4bb2c94da502b0f4909314f6a14018bbdf50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS1919561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8833c8e71e0084a37252c2953e9afd8f9e5e734c52e6a310684f1c64e29c8e54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS1919563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64c44c9488354bf2ee6a55a51bc2ea8f18e85a12ba4086829b5569983a151df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLS1919564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b400631d5cf576f6524faeb3466f291b0c2b023beb0b5e196964e7fc5f53799. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1756424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dcd5b5c3bb768c65e578cbda45cf22f4a8be7ce6e4b02676742646952b3d80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1756425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d3ac073f65792597c6d23384922d34c4b4d2780ba1febc684954777ed2d007. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1756416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64517a3b22d39d876b412138d65c7aae5090365e35e2ea20cb267e4d1d08d01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1756418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d041f18c570f775f75f93320e0109646440db14daef49d23a0350f0037415. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1756419.