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 0x4af327ce38ef2500a496ddff996a318c00f3d6eb89f0e0c23db6608219acf497. 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/d9ec985a-18c2-492b-b520-570054f1a267.json and https://artists.proofprofile.net/proofs/artist/d9ec985a-18c2-492b-b520-570054f1a267.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 0x3a9127b64999bf319bcc3131a272ba33a145d3949f86cb6e37eb22e4dbc856d6. 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/CHA012000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf355699d18fb20d0961cc3ce2fd8d949136029dfa5973bbb71943d7802c988c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812040525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8277461387df360b60c5bdf6d19fad975609f48d35e095a47f5659f82cd6b. 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/CHA012000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0ea541233d6bab24dc8fedd9889c58b8e9e1f7116f7e082e2261a1e30b96e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CHA011500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8117c7c57a101e9640086be2c58c9b44d959d0f35ac45e2d7a2d0bc20f0907. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA011500004.
Sous une rafale de pierres (feat. Vîrus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30f481716321edc930aee56f66eb8aa602e7ede6226afd5f8676dc0986261ea. 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/CHA011500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85b511565e7eefc36b4807a8581c10fe06d607007d6f53ccff462b7a1c5767f. 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/CHA011500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7306878f3ec48e4045ddbc579c2c9857710790437351d38c6d5c022993cbc8e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CHA011500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc3c3fa9b643ecb19808de2576531d4aeb2862c7e1e5828d7f14a4c484f9912. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V81262134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8775d94dd97673bfb4a18dd87436f36dd82df3490837705e347495141792da30. 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/FR6V81262135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133ab80b1b7904e559890d993608e26bb87a3ca3863680df1686bb53fc637681. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V81262136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff3ee4226b940b39c3c55b70675343e35298a57a68449664ceda8964e9ac21. 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/FR6V81262137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83011f372d49af964eb37e87b9eafd8cf9a8e810699fa9ca1b31b51d7e83bd39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V81262138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9aedecd55a06b804a12c759a56ba1906b7c37c41798d46535c45fd30fc688c. 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/FR6V81262141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d9dea14dcce22284ae294198fb9d5453c3d1f9d0b1e35343d0e929caeabd5d. 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/FR6V81262142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f89884bfd48365c526d04d65395bdf317a4c8d5db3a4afa464af62a10b81da5. 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/FR6V81262143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bd4ea5c94583f9fa605783f6e1340a4dd9d9b51423f9b66934eb42330f08ed. 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/QZES92408099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899423d5f9a2f6f1b074809bb06d85a39f37ab2890ea26c4c69cdd365d894c1. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR8GV2301580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9cf0895b7a79da0b2f71e13166460adf67903467762f0e8bdf60f0c0c684fc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:06:49Z), 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/FR8GV2301590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e848a836c09e6dfe64dcdac6b3eff21c43ceada2302f7a88863087a1456473. 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/FR8GV2301610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc068fd9cdae5aa8acb9746947dca7f42e51b7f29668a7c783238263b79199f. 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/FR8GV2267420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78d463bb8ddcc3456ab94a5cb45ae8f124b6e707dd5db7689de22735ec360e6. 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/FR8GV2251260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ddc3de100cb33380bd181ca2adfda534987fa93e5fd12d2b526c02f25ab2b0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR8GV2301620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124aaa49a2806b509c94a3d9aa7c91a1c5acbb73a245108b9fd8f999a821caef. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:09Z), 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/FR8GV2301600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a38156e2a61cc9c20a5738dd193b014163bac11f290cce7d7e8582f1c25ac. 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/FR8GV2303050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc068fd9cdae5aa8acb9746947dca7f42e51b7f29668a7c783238263b79199f. 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/FR8GV2267420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78d463bb8ddcc3456ab94a5cb45ae8f124b6e707dd5db7689de22735ec360e6. 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/FR8GV2251260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7306878f3ec48e4045ddbc579c2c9857710790437351d38c6d5c022993cbc8e3. 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/CHA011500001.