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 0x8dee7e2cecf8573e3913ae8bcd980c6ad17fa371ffe671637054d0767674487c. 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/371c9a99-1394-4c3e-9443-1716c4b7fce1.json and https://artists.proofprofile.net/proofs/artist/371c9a99-1394-4c3e-9443-1716c4b7fce1.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 0xf14748d1f844d253d85e13bd7ed3e03281881d17156b675f3cb96ea9e2b3f1b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2480542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e0a0ad9582e84047a183e722df70774227a202a85f3b44ebb4534f6cb49ca. 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/CA5KR2480543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb16665559a2cf5fc1ed5c89bad58c563d9a49160344776bf7dd551669a49d87. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/CA5KR2480545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15c1c1f57114206b3926f247adbc842ba53d17f018d9b96e74cc7c83a0aa97. 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/CA5KR2480546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7972661808ef99159fa8de4407f7524e436153598f9c953097d5798130988280. 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/CA5KR2480547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde762d4a3e0d6ff7ba31faa1c8ee5cd852c1304ff62776e2050fd69807cae68b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:45Z), 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/CA5KR2480548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d85c6ccb73d3990697ba3d96c8c539da3c4383009e00d41082af11d674326bf. 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/CA5KR2480549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bb886457836ba321c49f5c6b2b797cec202e1ebc28f8fbe4732bd6776ef04. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CA5KR2480550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dfb336fefc612ae889c26fe3215d26b5dd00d37947e8d7d91559de0b80bcbe. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/CA5KR2488615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb30134f849567310feaae228ba8d3c94868a81414d58c87400e0ac46521cf. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CA5KR2488622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b1bfc0066ee221d4c34cb38dfeda71879384c2dd2c5b9def498281f7b8756. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/CA5KR2488618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe659c6feb50d435d454b254932d8143cfe65085c6192de2cd8cd35bfb98ff309. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CA5KR2488620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa36461fdc149b8bd5dad86d9b1d40d327efcccfb15a26cec8e4db148f25df4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CA5KR2488606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7848587388deeb5002a913d714caf8564920e1fdd799f24c6fbb49de5038ee. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/MXA3V2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af5a4dd6c58687673830cd0e44678d76172dc7cacd3b06064103de459dbb1b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:58:20Z), 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/MXA3V2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e0cb96ed4f692c8ac7eabcf6405f2629af36c7c842cf3f93e83404fd505ba0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:13Z), 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/MXA3V2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80896e142a4839dc14caf760e6ec72d55424780020943d5780c98ef5debce423. 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/MXA3V2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b945da1f11ce8bb4d8253a67e48465b3ac3c3e9909e035a963295fb8ec8ec4c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/MXA3V2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd443422a48dcc7eac501833b3bd8ea641ced1d870c8c139f7ddc62d9388dbe95. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MXA3V2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a3b96fde57e92c8828bfab93e0caef6a831ceebb978058650e0eae17829ce. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/MXA3V2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c28efad4087dfbfd1240370dda105c448e0ff2dd218dac4bc448cef8e376c7. 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/MXA3V2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af21845225d92a19942fba57d40db0c10501a3f4d375673cd565869199395cf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MXA3V2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d15928ff4176d597a38aeb3dd4eaac38d06783867c3ba4389463a1899ddd279. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/MXA3V2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab78a2f24d0b33e558484f6c17ef2e9a0e2b85032991eede9e556ee2625bac3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:51Z), 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/MXA3V2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f20e5fde28f50b283b5a6561e9b2bdec45acc7a1fba57470e8d0831733605. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/MXA3V2400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0149c51d5ae9a5b4d2d03cb3a7d873848f4b0dee1fc75bfa3fa2bb0838b03523. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/MXA3V2400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d5d8581effbe040d354ae82bfd9ceb3d90b9c13a5caed3e599854aa0df8486. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/MXA3V2400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcde7d7676758e064b1d610aec150389726ecd7856f73581bc5eb3078267ae2. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MXA3V2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa4e4cb8dbc410170ee7e8655b74edf7362307e172db8e11cd86468425f630. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/MXA3V2400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd921a94d63f5483373e424332a3339317a806c63ca36da2656377f43af27e7. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/MXA3V2400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088a2d7a181d411d36f259e22bfe950abbb4ec4ffe5dab5f07c63a5453bb07c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MXA3V2400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7d65e16a9c4baefb305afb368463e757f9bbb71c40afd725057d3b39d91675. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/MXA3V2400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd73a0dde728ddbab46483bb55069de27ef590a078300aee828505b1fd8f4ae. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:35:00Z), 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/MXA3V2400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827f56148fe6ddfba07413238e403a843df63bcabc6797def7a43f1e612b3286. 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/MXA3V2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c25556dfcec34e219588542a78f7537d6c546cb0216a168701780116b04bda. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:19Z), 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/MXA3V2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ed75f47195e03956b615dfc034bf5aa456d54fafb26e9297a1e4b1bd3ce31. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/MXA3V2400261.