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 0x534dbe36f7ad97eb5f197de6e23a5876c6a96552c32960ae0fa7b3f3cd770157. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12c6da3b-abc3-40d4-b107-e72a14675113.json and https://artists.proofprofile.net/proofs/artist/12c6da3b-abc3-40d4-b107-e72a14675113.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 0x2083c53e003444c28860309bcedd5fbbd4d890a5b5243c2bad6aceec3599c72b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPB620600988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff7837d460ef6aa337a71351e3a32585962f5a6ed9bf6850fecb627d0a096c9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPB620600989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb274ca0a16f724dc9fe12cbec9275a6bb84ff61dbcace22cb0c1f47f0cd09970. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPB620600991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e000cf684d6e26b3eeffce3f881a0ce30bc4d7076de5818dd52053e082a9bc0. 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/JPKI01712298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4c0e86af78150b1dc122203cede0ef5f19bea0bf3d20ba3288231e13d502ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPKI01712441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98203571fc5e2b6b6afcdb5cdee9d7ec5f85a5ddb895a6a63a6f2f33ccb056ae. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPKI01712442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4703bfff267a7c3033fdfd68cefdef0f539321a2824b4462bd44e51f46fc8de. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPKI01712443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c7b53fa1185c9f6104b96b2443185e7db7df80fba41165c28c058e71ded99. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPKI01712447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f0b516b9873baac7c3e3c364127fc5f024da066d11475b480dc0479ee2d81d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPKI09910080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16210b897deb44308e2721d2e9bafdd2e2d5ff5b4ce7b060b8d979cf91dd6f30. 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/JPKI09910090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4365f0f1163f5814c403e1f9e0175bc3f3f2a307287ea8602127b7e94fdaab. 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/JPKI09936190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796552e227f21aa2b8f5b2795fd551e0b0856dd6c7b9195fbb09fb92966acf41. 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/JPKI09936210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9027ad87a19dbf5caeaac4355b9a0257f3df56c7f3f1ec6b4ca7824bc6d84eec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI09936230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc791b983e3e230058c32cbaa6a73e0a003261006e589d36a41d052027a822b4c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPKI09936260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f583355729cdfd33986443d11b865ed8e407c1ca1966f820ab90fd67cc09c0. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:07Z), 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/JPKI09936270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dc53fc3c4eb8842e6538b665f40b2aafbdcc71fbf7df160ec56876ddef63bd. 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/JPKI00608982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16210b897deb44308e2721d2e9bafdd2e2d5ff5b4ce7b060b8d979cf91dd6f30. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPKI09910090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c536f92fef3045776eb14ff2fb264cfe74e96a5cc9aad1e74b1648d654685be. 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/JPKI00608983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa7983dbedcff1cb998c3e31694362a6663947cadbc3c3093289ed0c0159864. 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/JPKI00029050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ff82aaa7ae2d3aae13514cb82849c5208ef45bc0fea72abea5cf7f853283aa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPKI00155970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdbe97663ad1dcd0ac9421448d4ebe28daaabbf066370c22e2edeb3fb44d6bb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPTK00605200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aababcfa86eecd8c8f9fde252a457f9c603ebabfd9d1543810ab3092c3f44e5. 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/JPKI00163990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2785a8cf7facc7ed4b483a697d3f1cba994ef7d723263e34c7eb6dfece078580. 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/JPKI00164000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acbb13f44f717fd182557f2d883f5442442ac9cfccadcaf811e5dbfbfaa7b95. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPKI00164060.