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 0xda2f9f2d9b02fb0581df0b36451a20dc03d8ec04bc6a344feeba9c57d2f957cc. 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/8a24d7c3-0eca-4b9f-8984-0d027f23ffb4.json and https://artists.proofprofile.net/proofs/artist/8a24d7c3-0eca-4b9f-8984-0d027f23ffb4.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 0x6bd6a4b8defbdde9a10b6aa162644cd36d745aad9d0401ed4a7c6de4ce4a0916. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPR651900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc417acebc6b594251e4f7fb8b13eee7a730414487046990c858e2727660b4c1. 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/JPR651900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aa7eb219f72386c038f758ac910b74a4c2b91420bd26f49861219f434748ae. 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/JPR651900338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49adc18e7db8cb3f142fcb6ab96463956744a57c2e76d244ed34ed5d59cae7e. 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/JPR652000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d94feb34e873e5814d503b9b2f2c496b590756c6e9a066b950c02e0e179248. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:01Z), 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/JPR652000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ac54ef2202f296a3df81ec061092aa1fe830315b8c6917b0ead327c4071406. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:09Z), 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/JPR652000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2252ca733a1d84486e5fa8937edf730d627d7f2e1eb2cd92a6ca3395c346fc3. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/JPR652000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a0ac406e57d8120f03a00a2159ecba1372bb3f083b4fb2379d2211f4cc9a7a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR652100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977489e446cc9c0005d8659fb0fb49432a2e2e7c7ce22eac3d90da1e607ef511. 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/JPR652100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf58365f778a9ff4764493c20cd64d0e125107335c98c7c930babd152121e402. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPR652100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf58365f778a9ff4764493c20cd64d0e125107335c98c7c930babd152121e402. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPR652100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a0ac406e57d8120f03a00a2159ecba1372bb3f083b4fb2379d2211f4cc9a7a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPR652100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa125855296b6f2df10dfe617584297fe31f14921427d2a32efe725d123bbba20. 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/JPR652100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9c8c3f075823394180c5febd2b567559002a0fe4e795cce32666ecdabaf3a. 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/JPR652100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddb66701031cb64624e0a31a982ddf96cf14aeb4ebb230708d9b33b7c9969fb. 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/JPR652100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de16b48af28a18d6d1712b93f2caeb6cdbfac1e8f2946e7c5673afb278c91f8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPR652200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e0fe83c6ba76970173a42490f9cb8670f9954a0d4ee6d64a6572d54e1951e0. 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/JPR652200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d5ce6fefec33b82969f55cf435d97f4ad5b8b83a3b6e4c545108b6a5e5d616. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:05Z), 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/JPR652200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07507d66793f5703e3b05d63c4d7cdb71dc7e57870d3c119871cfba30350b5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:29Z), 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/JPR652300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94b1f353da0f4663b450fa4284daeabe2c8e3f1b8973d13c22c499a6fabb5c6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPR652400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4291e8a3099035a3adb09345612ac9248d7b6a84a648a5784ed40058a88530ca. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPR652400038.