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 0xf443c207daffa86f761019332584b4f43028c5d83874a4345ddafbdf78829982. 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/10b338c3-8329-4003-b7b1-171950131350.json and https://artists.proofprofile.net/proofs/artist/10b338c3-8329-4003-b7b1-171950131350.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 0x92928048464195bd0a288c4e3a60325b6630425905d5568284be1247397e92c3. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/PLA681101178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900de435bccb7b632526e5748baa3509f612d0fa7f9223095bec3df692e86e2. 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/PLA681101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a549004a3062d263a85344b85506425d1ebd9f3292ca9c220e855e4a1e6e3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PLA681101180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e9af915be0e498cb27db7ff5385af21e6503a1a3ceb9ecda2845bc7436470a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:27Z), 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/PLA681101184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cb6fe4756b9e1d6bc22a792047e3af0ebac5a90381618b86319c3fabbf2405. 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/PLA681101186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09532691db3d401a209d33d901278b47ab6482c2f6c47b86f90885a518e74cd5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLA681101188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977396212753b6d46fe677fd6cf2d157ab22f2b013289f3f47d4590896e197c8. 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/PLA681101190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1bfb68d3b7668c816b938816227afef683026a35d6f1723ea166f7d8d24ec1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/PLA681101191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff30b102b323c118975ec101c66cf0db7bd7c2ec88f78c2be4d27b73db3b1c9e. 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/PLA681201289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8253566feb965dff9f70a0a3f24bc5d622c9b08b6ab36d496cba9482e28e4b03. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/PLA681201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19a817908c257dfadcb982fedba989846bd913e1cfb482c54eae5660fd3fd4c. 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/PLA681201292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf008a38b9765921b2415851e86899b1e2cffa8ca217eeda47a02e46d854d5c. 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/PLA681201294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21490e6b61336d69a796cf94d34246f8ab8961ad8394d11ae08124868aedeec. 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/PLA681201296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02306d2ea32b2eb5623bb71f539100be4e69a36fbf501e02528c860d64eeaa43. 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/PLA681201297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e61724dbf174ef588b412cec675a98583546288945866028291730eb2e910. 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/PLA681201298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3025e4df34e5e3459819a71311c3fda6b9ceea2171f177f6653fc0d12a9054a3. 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/PLA681201304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dfbf5fa51616a94d69814e380f358b41a43e3be2b8de4028f832ba5292a90. 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/PLA681201308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b8af6e90c9fbe5635695d7c76778a673a40a68ce5295c19a84b47d3581a7da. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/PLA681201309.
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 0x8930ab066973c41e48a74a86e38baf4415e5f4f32755cce4f332b4afeeae06f0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PLA681201288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb968706eee2f8438297839812a3e3cd2210601c7ea8db70b5bf49e8dad5e20. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLA681201291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213863a15e1b107bd3561f69d4cfc4b06eb829fbcc42d60599f3b3d5ea13f93a. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/PLA681201293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74d48ab068fdad523c9059c115660e07afc60e16426910fa1113f3abb7b2069. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/PLA681201295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0037a6b65a787890c048d24c140dda76d9fbae81103bf68571bf52c8cedf2d62. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PLA681201299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2576b8c7ff024f1a31478da0b74d8cc6f7ef924207e250696ee0674785505e95. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/PLA681201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7a45a97b63dbb04959bd62d009b33d829d65510e0a2846df9367dcdf490a0. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/PLA681201302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d4186830d6e16a0d411cde09eec59f9b82512887394ec2e6af6ff59e7cea24. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/PLA681201303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab88b7d51c13180b460bb84c83ef3b1e1d25a21b7a480e438933bd767996f2c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PLA681201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43def2523651fee8fb74d08677e572af9934566901e5a4a76900561e94a54a75. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLA681201306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed428ef8d0e745e2b1dc1a08629c425291722be4cdbcf1d908be1026e7bc850e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PLA681201307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818fc76c03b268e06f1c4705396d70d2d6e473470f6f2188a737e0cb7540666. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/PLA681201310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6679cfebb3c1b82b7ba6b301f6bd1761b3d7354d41e9599a29665cccee1aec69. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLA681201311.