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 0xb9471c0d53311ce76645887249aab526f812848272416a258f40f313bb7e1d2c. 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/8936720a-fca6-4d83-95be-1004b2355ec8.json and https://artists.proofprofile.net/proofs/artist/8936720a-fca6-4d83-95be-1004b2355ec8.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 0x6794eb33198c5f5aaa07ce1c7607fd106f2dfcb10d375d73cde60b9a56958057. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/DE1JN2442432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c6f1bac07764a9597434ae4cb863523efb3f30aae7a38cdc07de3727f1fb44. 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/DE1JN2442661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3310639712259a72285667ea96f1b0cb8eea0d0db8354c3dd4140b89e5b370c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DE1JN2442410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b85e26414ee07914546961418be8cb1bc8f63c377877f311a46fd818dce7d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:46Z), 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/DE1JN2442531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016284a61f4ae133f85074b28630a8537b49b045e1c9140f7e7d0617b6f673ab. 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/DE1JN2442414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df7bb35ec588425f58f93ab56a52ab165d8f293f56d2634c2891b004e9b0fdf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DE1O62494289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2c0254d4bbdd81995762f5afc114bb349228dd096012782bd04f718107956. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DE1O62494361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd859312e9ceaa5c99d5c3ce1c78548e07316a19e847a9dc91ac8344a24de6c. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/DE1O62494369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490fe7ef1fb5a99775bda0eb89416a8cf41bc808d5f103d7fd43dc7216aa7180. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:10Z), 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/DE1O62494321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7789910b65fa4039eb92867420652ef3112fffafc8de7f5964cf0eac91bdc. 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/DE1O62494619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad026005b5cc8382225c32d864f588b882ecf340e002f8822c7924127edba52. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DE1O62494425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469759d7d19715648847a4856318d466cebd3b8583e34f80776f4cc283fdb12d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DE1O62494664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf70b8ccdf54625019ce00562d957ea0cca66835073750aec4095ec79247778e. 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/DE1O62494391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6c651b709ef75b2196539cb0ac118186ce8d9f7600560cfe50641f00a231f6. 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/DE1O62494383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7ac1c32f6447a3822d6e358974ff619e770d42a4d18c4f904655ef15d22b38. 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/DE1O62494512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296220757a67ef7ebe18e731b7d76a35d0be21d519926188101f5daddc7ca723. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DE1O62489744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac277ab39ce3e68adcf948198608307543fa1ce1938df989d38ebee05889a494. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DE1O62489702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb652221d0008ca0e98b214985bd23ec4983ceaea6b0cf729d367d33cee893b. 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/DE1O62489691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8facbdedeb96f5674bfb053d86c1326a562da1c0f5d7919203575383e655ffa8. 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/DE1O62489890.