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 0xeae73516d0beb06a1115b7254e1bc1af9df4a35ad01e6ff82095c9b83820602c. 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/8b12cb1d-e74d-4ed1-89c4-26086e0b8ed9.json and https://artists.proofprofile.net/proofs/artist/8b12cb1d-e74d-4ed1-89c4-26086e0b8ed9.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 0x4178eb138ba6b0b43c3f9b57c7f34e34fcb9f15cdfa88dc8c19e555985a544ab. 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/MYTP12100005.
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 0xf422445d27106b730644b8c8ca5c685c5fc61ff6b361263faca7464ac55b2545. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKG732280196.
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 0xe33a1ab07bd880a35181e7befb4233e4742dbb35a6e25ab0ecfcbd3e399256ff. 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/HKG731602839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3292893604f02c114c9504fd48e427607db8961e47e3e9e6b5e5010eafe2ba2. 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/HKG732155583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c72ce2e6d507ccdb20c9a4538f9ce40fdcf51f2e53cd4046e647e97ba439e6. 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/HKG732155582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04775b3825bb31b1c2adb008aab5038246bc2235364fa536a53ef3af67e74b9b. 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/HKG732280105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6f9ea0c51139afdbae36fc12a07463c266d82f071d54590af59c8b8449df6e. 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/HKG732280106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac407d5d7144e2cbb73fc43df54fe5808a9f912164205c488dc0b3a3311bf67c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKG732280107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f877698b935764417316513243c2babd5941e8ed66e5a8c34ffd82255c8e0. 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/HKG732280108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1c4a40702ed537089894a09e2d89d7039b4005bd6bccf772ba006186dcff62. 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/HKG732280109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332584f539e648d01bec127ef44159144250c333558a78010cf4a2959a3b8982. 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/HKG732280236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21cf82b359868649df8a98c9e9fa176b12f2ea9c788aaec1de37957028d0dc. 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/HKG732280238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9424d66df62407a153aff8ea3b7893dcb9941053663f9e3dfede75c2246c5c8. 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/HKG732280239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c5b0a5ede994507eee73fbf56a3d8934052be298ea1076c3ec4c9bd5a2c2e1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732280240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb115440dea947f235e99b9eb8e109bc2f4be513c8fca7c99c338dacc6ee6e9a3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732280241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4b0a3cb4250da7c7cd8e0a1816d632937e000d178f98263425e55d3ef0abbf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKG732280242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77022011348698db9ad363a63a6b5cd4553e7886d7030c8b1504db479ed695. 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/MYDG11800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db895f46411b01f9ac1a869f49b25daf5801931d5c518fb7f6699ed3a85261. 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/MYPM12200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b10e53835fa8c27f8d15850e806634af6a28f393e79a51f1a52d0c50e9eb2e7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/MYPM12200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd285cb001b95a4865bf4e262fc3f9afad628bbc9ba46897884af404af5aa59c1. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/HKG731508201.