1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfec15b56357c085f3319ffc2ae0bb2698cd9f1dbd5704c2682b9e37b82252619. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/397d0521-5458-4c33-9ef3-d57660a855e2.json and https://artists.proofprofile.net/proofs/artist/397d0521-5458-4c33-9ef3-d57660a855e2.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 → block OTSBitcoinBlock must exist at that height 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 0xd0cc53167d867204b70a28a3796de16bd9aef9fe8fec570844aa7684cb934931. 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/HKG732280198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89faa5ff322ae0f1a2493d41efe947a801323716956825e10f920567eee61e9d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732280202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9cb53aa69d6481fcec103d7b9b0631e823a8c58a878c5bf47cbb47eb6a6bbd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG732280204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb1834e1068b1463b544a150b8cd3ba2763d286cab0ee9538dff8b3c51b8d59. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWDL71701713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa9294cf1fe7640d87b9e93bfae41194712ca945d44ca440b3eb939e213da96. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWDL71701714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa75eca7ddf518c01cc3fd6dbb402497b4f840fa1ffa05e2438871f23a8ad05c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732156378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ba3b136a99cf52fdfe6a67ebd42b25da011c2be44e182945f39d7ace825c5e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732280168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae5f684503d6a067b10ab4c84a794fd23e7e3cf663e42c1aeca885cc7e8469. 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/HKG732280169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb5358059caba3679eb752e2e0dfd4b75497a973388d76d7c2204596be8451. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732280170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e2ba451e79975316e119316e2f177eba4323f69fabbb777a27fccde3716106. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732280173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921cbbf9e5f5b2ad08508238154180d62aecf980ff73d2117edbabb4ae5382a7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732280208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63949e00c61b50bab531edb833f66bf54aebd5d293621ad8b0cb9e455ef73af9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732280210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1198acfa9e1b06123002d217edd444c9a540ec743134bfa879404bf5b39df0. 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/HKG732280211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa057aaef071a585e19b7da0bf7751a50bf3a4f4df2293d480d817d8eafe42. 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/HKG732280212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6325100e47ed2b843da205f7cde70d55b35788036444b25c0554a7a3439e0a. 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/HKG732280215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacb52f8228b1c60e71eaa6a6b5cd3f0126b845b4254b32e9133139030694d06. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732280216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91527beb6e42960da557c9b1b405c771939d7746d1fe7947a8ebfc14af8b2813. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732280218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cbe34253e2940d346f2bf62f5505ed1b309454b20cbda9c83547fbb882ffbc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732280112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e2b52adb4cb9f8e5fd6f86bdbf92584fb1f7e60a6b7805f8e4dd989ca21773. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/HKG732280113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0ebc627b5015f30eda7f012b457f5a192a1ab70d28b40b66606c3ad755c72c. 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/HKG732280114.