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 0xa168d99995eb6b5cea5d40895ee4af4d2c09767c3c670e861a94260ad723586f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58b11456-88a8-482b-9d2b-7f3944312a32.json and https://artists.proofprofile.net/proofs/artist/58b11456-88a8-482b-9d2b-7f3944312a32.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 0xac73dc50a457944f9e3130601a6ad597e367b62b4b525af46a84ce045dceeb07. 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/DK4V62100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed001c356cb8a67559a3bfde31c3869d0b066bcb85db921639675c588f0311f. 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/DK4V62100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72468b65b48e0b466ff40dd6c708c75cf9260adfbe0ee3dfcd024956efcb8f7. 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/DK4V62100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91553f0ac776ccacd6386db0579becdfe1e2a78ef9e706aeb0ee54fc920fd2c. 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/DK4V62100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b06e3f70bd8e5d94cb923a53402d4595f9cf3b29bb177395a843c3a99d47435. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SEYIJ1400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be63d5ffeb28d2fa5703c5dc50f219ebec9e09f92c585a5e11808cc00cd3f42. 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/SEYIJ1400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9434eec516a59d6ebb10b33f15dce7ed623daeffda77650f15ad5cd4f7357562. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYIJ1400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf09372b680c600b2e14b91bcc768d4793f531c849f0b8d14dc587c8516b212a. 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/SEYIJ1400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c056eb875b3543faacddf9c0be2ccaa18089622f56456874798f6193a734cbe. 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/DKQ4A1202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf816aede0bfcd0e3cbf87dd847f4e7654cae079d31a3a12114c06b5d03e454b. 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/DKQ4A1202002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846183a555a5a19fe565599192e3de9906b3bb5abc1ce868ed37b1076cec7739. 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/DKQ4A1202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2b0e865cf7d2b31527bd66271efdd7e89da6c858235f457f150be1e6e261d. 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/DKQ4A1202004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d7d3b1e4c000590ca4c337def1842a592470726400ac2e5d7e32edbaf3997. 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/DKQ4A1202009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf490284ebb5a65d08399b31ba3f6192cee93660dfe36dfc4972bb1b03fdad. 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/DKQ4A1202011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd30dfc42694baaa29e2d2ef1bb1bf6687a22444cb1ed9b854f1bdedfb012b5. 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/DKQ4A1202013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060d3a0a85252e59812e2671c8bbb396749128d7d98438982775f8d326df8c66. 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/DKQ1A1006002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360e824b5e77a32884e6c10de0158eb614d9a149552588857ea3af9c0f536651. 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/DKQ1A1006003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b5dbfe11887670c5b109ededa42b525bf1aeab73bc9ec5cbde2ca38ea7418. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DKQ1A1006004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82205cd649eb043be2b4da541feba93cff2720cef02506b1162e64e510c7bf7. 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/DKQ1A1006005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13911c247182c44df5f7fb919adaa4e4709fbacf7c09e993ee4e9933f490a6eb. 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/DKQ1A1006006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e7db2af02a4b17c0656673c55cd956e5c0ca99afeb33bcaadd2774db4ef60c. 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/DKQ1A1006007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701ca3e1a80b43b7a4d658f1d0ff0c79d1b80ebb00009df2ba07bdb4399133d8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKQ1A1006008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa464f32d9308374aa677a39427ba39598a1c6a9589dc5bc682cf532557f8db34. 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/DKQ1A1006009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959a70cbbcc40197df9eced91b4844fa91ca0b017be8a78d66db177478b4582. 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/SEYIJ1501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a2f8c685c9a93abdffbe91b49fb58be67731ed33c248150af368d5bdad8b14. 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/SEYIJ1501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1cc13334be83eac3377c9b42c65d2df3915ea7334df4a784c520b6d2e9fc0b. 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/SEYIJ1501103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50be4aa6adf3f1692c29a2dc573056827d6819e7937c9f07390ee018339b0355. 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/SEYIJ1501104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4656c31f0577d5aa080525e06fb979f0fca5148e08bceb99c111adf2aefdf7a. 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/SEYIJ1501105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bdeccd4caac82aa641dc0b93d54998e974661e37d029d2abba5ad3d4852580. 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/SEYIJ1500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1cc13334be83eac3377c9b42c65d2df3915ea7334df4a784c520b6d2e9fc0b. 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/SEYIJ1501103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bdeccd4caac82aa641dc0b93d54998e974661e37d029d2abba5ad3d4852580. 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/SEYIJ1500401.