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 0x6e55a78d5ba930968da4ade0c0f5f070efed7868b2b2c2a5a53e705a186f088a. 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/f62dcef9-2d67-409d-9e0f-1010b65bf8eb.json and https://artists.proofprofile.net/proofs/artist/f62dcef9-2d67-409d-9e0f-1010b65bf8eb.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 0x975c1e57e1b3694dba65ecd70d18656df7e1b1e0b17484d7b8eb23a71461fbf5. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FRZ042000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e563e65d54178c2695bb79ab1d1fe971af1815ae5bde607af43eaf0e8303fe4. 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/QZHN61937320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4b443c284c005053210535441a0577845ab25df8a76ab8fa8dbe269deec770. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ042000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d00057c47bd5b136383b6ef3b6c129faac3c5f586b9bbbb6e73a9ca7a66ff3f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRZ042000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc0947a334c2339a642990d78dc68e1c9b1861e28a82e1163d17203196c4c32. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRZ042100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf7563676256a2dbff897a35c4d4bfe00de751ffdd11c8ef3287e2b3a51cbf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRZ042100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefb43f4b728551f066d9830f0bb8425bc6eb98c6c08e4f0b93b09e9a407ca22. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ042100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf7563676256a2dbff897a35c4d4bfe00de751ffdd11c8ef3287e2b3a51cbf. 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/FRZ042100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc0947a334c2339a642990d78dc68e1c9b1861e28a82e1163d17203196c4c32. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRZ042100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2385c76078b753c5be6c68dd7b096a370339759aab2bfdc82f2c1024f2a8301c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRZ042100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6692a3aa6a329c42c5a08c522a71c2bf6fa443d56a63c9820059a3f36c01444e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ042100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c882c10ff46e9e3f2771e749d977ef7357552bba357fb399ef4075ace4d698e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRZ042100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff34c7b402eccfe2505d7df6aa53997968c09afb6817a097eaf5e7d7f5ad183. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ042200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5668c521a87caae40043de02fcea08bd76d270bc16166c630ba234259d8130. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ042200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e30211842efd3235a09822243ea02e01a38b55f10f19465e2a90c93e902def. 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/FRZ042200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575db0372fa507375472b637aa63162724498254f345f1230a4f9fc1de1f364a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRZ042200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca654d8033b6dc651584f46d3abc75fe342e758771f640603a63ad426f92c1. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:52:21Z), 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/FRZ042200695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d675451e843027de4164d5646d51e97a79510df4f62de09102b5f1a002bd52. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRZ042200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ecfde9dac0ba41dd3c703542b46e9b7e1acb163f9c92d31ad4242b0cc57470. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:37Z), 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/FRZ042200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2bc9f08e1c5a1c847b101382c737165bb9664bb362562742d56e26a7eae40. 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/FRZ042200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357f0f2514429394dfc62310d64aca800b6b8fedb082e59a917bc72c8717818f. 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/BENV52410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa560f58efabca29cd6771bbcf73b9828960247e2515ddef85cb9824b756bd538. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BENV52410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877888101309f216fb02ca2ca488395107868083a451ba63d74ab11ae0f95067. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/BENV52410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6d6eca63a258142afce97e6e21a1aef30455a0a7e554f6afa4db51b3051ea4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:26:04Z), 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/BENV52410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:04Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4735b7c827d674e4f07c4f3823308beb98e9c1398593fcca0c50bfbb7e9aeff6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BENV52500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a861734a718bbbedaf57c278c6198a13d1d00b698e21317162bd50b022cb5. 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/BENV52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7820076909426874ca7944e44e9ca257bacf559ae56cef98b128c8e7f70bfb8. 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/BENV52500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4735b7c827d674e4f07c4f3823308beb98e9c1398593fcca0c50bfbb7e9aeff6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BENV52500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a861734a718bbbedaf57c278c6198a13d1d00b698e21317162bd50b022cb5. 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/BENV52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260a253d58186dc9adad26e5def76efe291d75e3ba16344719c23846f95e07a6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:44:53Z), 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/BENV52500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7820076909426874ca7944e44e9ca257bacf559ae56cef98b128c8e7f70bfb8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BENV52500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4735b7c827d674e4f07c4f3823308beb98e9c1398593fcca0c50bfbb7e9aeff6. 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/BENV52500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a861734a718bbbedaf57c278c6198a13d1d00b698e21317162bd50b022cb5. 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/BENV52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46742eccfe947e974c08d36e9dc393d4cab50b63b8b6fc16f70bb2c49fb2a3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BENV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf476cc91b499ce79167c79420590a11385075e4548711c864dc1c60983a9beca. 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/QZMEN2442172.