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 0x3e5b34be980e558c3b245fefc93bcc8f0646db1f553d8c02cf00f76a8f80f91b. 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/cae44050-0367-4f20-b48d-c98c35255e55.json and https://artists.proofprofile.net/proofs/artist/cae44050-0367-4f20-b48d-c98c35255e55.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 0xc31b6ef12d33097b06da64866f26c9415a55b16b6bb97f745f05ea6ad16c56c7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWR2130442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17c44913a3b9186da233aaa25390dae33b9e7a045c815f921868d0f62e9b87. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES52204329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7636d6bae9a6a2f99f1ec3be1673fe0ae103fa5b20620d2576eb93b45b8f0a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZDA72389092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e3a7e472e5c3209b6ec704a2107ea9593e1cbb23f06be256dbbbe2181f69b9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZDA72389094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee6afb926c1e323ba7a53652842b3dc76967e599d9efe03d2d9e21fc025ec5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:54Z), 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/QZDA72389096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21edafaac349c3b25ef366bade833da5b524fa1b264e10e39f213ee8a4973663. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA72389100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8e940463fa4e64a97529e01ccd920eb5a6410f34ecc773b289717a939e9f1e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:11:48Z), 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/QZDA72389101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f907bf2f75abfb9bc42f018b8ba6199e0be82dc840e973f9f035d881a9d5275. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZNWU2489768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145e23a63b0240e36ca7675be81f2ec068b50945e036b4312c09751c16d9f2f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTBE2316668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60395f84d27110e46f8079d5a67e1405e4a0e9a654026e5956d80c1dee79d0e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFYY2532077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6df04667caac86d3ba693d4d70abe835a52b16d9d6b1f97f6e4ac57dc9fa41b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYY2532078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ea8ffe318bfc0a43e225123a2612c909def39247c6218c5545d04be03d265. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFYY2532079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16840c75e1b1048b1fb110655b3499c0f9ecdc7f9704cec782d8a34f500bd0a6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFM2373203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540cc53da8c694115ff280dd21ee9bfd6add0b1fec258d0a7f8f315acdcfcd0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZES92455157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d6e0c1f40843947f2cb643d28abf093ca274078ed5941d1c59dc85604661f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6N2331655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd4a737451d0397b1e4eed66027a9df207b9b9ed096a70061f0469b19758c0f. 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/QZHN52399303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a1012e5cbe73f9a3359e2374c4b6e2920c749f2040dda5736f2b84e42b2a24. 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/QZNWX2368617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195e2fe94828498d7e7c8e60b92e20e87384f659e8efb788fce31c847dd6c9a9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWX2395112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f502ef08a4f2fc0701d37b710d217cd66eff00b127feeaea6165cc7c478d993. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAZ2576276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1302fa23ae8983060dfc9d2b19d3b1457808713d0f72a9beeda37e8d5dd716. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:14Z), 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/QZTAZ2576277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fe7dc983a5ffe14fae8a376cbe1b5ee34b649d59f11ebae2d293464e2ef927. 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/QZMEP2534533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7103a5e2ee265fc5e887b6899e8e59a33a27ec47adefd8513ff1faf946053e1. 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/QZMEP2534534.