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 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 0x5cab26a178143fd7b2d8930717161e9498bad0e0cbd9d83460bbf09e856cad6a. 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/5fd90d5d-ec3c-4aa4-82f0-c9dcf2d6bfaf.json and https://artists.proofprofile.net/proofs/artist/5fd90d5d-ec3c-4aa4-82f0-c9dcf2d6bfaf.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 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 0x7af35b4d45a1e1d97c127cc7f6b92510810509df15dc16571b998b9dafb3f340. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ2L61900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955861642cd6b43b735d03981f14a104f7b16b6c5c030b7676a580e5c6353bd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ2L61900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e270e5ce4f02e0b179b2f99e69eacaaae93e4cfaaab5813426118492c5961. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ2L61900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec12fe514c1319c5c49d8c547802332e8e0b262cf6ea5e30d8bd019115e6f6f. 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/QZ2L61900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d1a4c06902319fdb5a40d4ab3e0adea336bd78136c08927dc494478f10c341. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ2L61900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168e370501d41d006c44cb0624d87eae497e5323fe2aeabed4a6f8b34779d0e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ2L61900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0ebb59727f91b02b3428c22dfba377625201d57a5778fd57c77519b9745b69. 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/QZ2L61900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40963c9144e409743b698458fc8963bf3088ea82b0fb5e9112c8cfdf06a10f93. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:02:18Z), 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/QZ2L61900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd32eb5f1f1be985a32799d539cd5e052e650e034702863935c70fdd14070a7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:21:42Z), 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/QZ2L62200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbad6dd4f60e42299a873c8a85b1397b4e51d1ea97d7ab6a350c6933f2e250e. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:54:46Z), 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/QZ2L62100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01149ca7c0a2af083b81fdbfd1b84f4bb14379dd1a4a38705c033212666e6c5. 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/QZ2L61900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd79ad80be78454b63f9b29a7cfbdffa4bbcc7184ea82f7197ede0870b0ac492. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ2L62100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bdf7c894805bbe499b50162a729ff0ce2ea403f0c9cca940cfc183156e1412. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:24:32Z), 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/QZ2L62100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa8bc056ec40a54d48348e36b940df0bb0e3b0d390875c5b7fedb7ce35d0b20. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:37Z), 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/QZ2L62100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9261252ac781aa2310cd3d0c9e09cbf4c5b273191543538f30247bd76d4431af. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZ2L62100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25fcd3fef7c0960f89270fdb772ac8e72b780e830b83bb4d7ab989e326354ff. 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/QZ2L62100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca650137f42dc444d80324bf0a642b2b069e0866a9d04a86035c5f719d2ef5f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:11Z), 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/QZ2L62100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28f89af6c1882fd6a408337a95039189c9dbc75999f31e8e05b275bcb8ae9a8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:11Z), 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/QZ2L62100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930df9417c7ce37b090b522889df9392b659c277cb2e23d3a9ca546d849403d8. 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/QZ2L62100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59777fccea547a75a441c6e2da9b7878296ccc84de45e41f3caafde6d3481b1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZ2L61900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc4d6e0f1eceb7d90c0963a27f536e71e0de4a920667f72ce07b9486ee0c0e0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAFQ2168394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe0418092e8276da579af2ceda0bc42d466ba293e2a1456e93080e1797903a2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZ2L62100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c51da512c95d17bb13454e64eb2806ce6fe70ae69d53a59a5f87507243a4ca. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZ2L62100122.
Big Crown Vaults Vol.3 - Holy Hive (Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd792b02fdd868c041b45d1860d25515dfb4ff515fea3541a9fab4f9e5f1036e6. 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/QZ2L61900027.
Big Crown Records presents Crown Jewels Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036914f48969f1f3a65b9954bb62acf3d440ed6d496048eba8cfbcc60a20c2ed. 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/QZ2L61900052.