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 0xda503b771601d6175be4af8f1a59c4f8e85266e18e0b9bf80adfd05e027728f1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9046f317-21a2-48ff-9f2b-939df3027a37.json and https://artists.proofprofile.net/proofs/artist/9046f317-21a2-48ff-9f2b-939df3027a37.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 0xfed83c444a189d3753d79f74d094c8c346be7bae76c7c38b46435b8a86972618. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:24Z), 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/CH7811503580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43343268ad64babd80fce8f5851270b98cc05757fea22bf427769b44ebc18430. 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/CH7811503582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767926969feeef592fdb597828120e8b9f395f2c1561e73fe6b6e82b00f023f7. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/CH7811503585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e505f8d215632254037b5faa7fd6d3e4668e973e848a3c8aaa47de79dc77086. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:50:51Z), 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/CH7811503587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01609bf5509be77199fc6d43376cc9b2d0b1e8865f59a8d6af2a144a9187ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7811707744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1022ff619d3661c610b09af11a3dff4adc88aaf8c28d2a990b615eafd86d07f7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7811707745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f3571ad8e61f3945d9b5a5407cd5aa0f4d448f5d2f212ea1fdb5f1f96a3f4b. 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/CH7811707746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf158477f044db0f95118345b19948b9842270c5a600051564cf77e9c889a0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7811707747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8ac7e93cb73a3fdcc8dbbb57b2449466650695a622f20f0d52f353eef299e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7811707748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013a4ae72549406ac18f287bf4cd8573247af19e0aba642bf82bf05600f549c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7811707749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b2f516c73c770fc62324047cea53f444e6f323e028bd93435e302f4c8beb5c. 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/CH7811707751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661295d26cfdc01ceedcde298b0c0262e3ab8bf5e9cdb4ffe9414b5f3c7a1e0e. 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/CH7811707753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b157c5b0c15bf91368c336b7952a48040dab4d2ccb28a45a2cb5476506d8283. 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/CH7811707754.
Pavarotti (feat. Semantik, Reemo & Godella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6e350d4640234cb234b9c652774d03754b156e4213f7d1dbd55ff21150c0ce. 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/CH7811707758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c813c2123dd0d74dba7843443bfb582b90aa130ab5b42e5c729e61411c01494. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH7811707752.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1851334556f5188ab2230acd2931f9d4730b4f9d15d0bde0b01744b7f2599780. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CH7811707755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f2c3fdd2e41f4d86e2ee98bf4c02ffd90dff2a5187a091911bd66c78dbb4a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH7811707756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef0fd8f85e195da840ccf4cfd1dc3694910c7ddfff020f8ace2abfc5b74ea7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CH7811707757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16eba37f801dd1b0162a3529045384eeec24c4229292c9195a325745313886c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH7812036896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae086be0361a84eb11c8c2aed239d8ea99b1215a903b528109dbd2622e09c5. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/CH7812196541.