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 0xfcf72db76b99120662a8cd13dbfc643696b1227307e2036a040346d3fcd96bbe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15452445-45eb-43cb-b524-da4e570a6113.json and https://artists.proofprofile.net/proofs/artist/15452445-45eb-43cb-b524-da4e570a6113.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 0x5575e09c6034e98c8e5d82bd1db7993d32e934b1c5d3ad2f399f364668a0857f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX3Q92018779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b8031fdb1298b007776a2ee50aed721d9056e61509b10fc7fd2bfed03e9d07. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX3Q92018608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78741faaff8d980d145f39c1a9c5cba2515444c30e803d4f5f315165906b4c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX3Q92018462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d72bb3ea447e5830fc293cc00a8141fa6485e28d73327e451c7cc247bf4ab4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX3Q92018464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38312df8108cbb0844e1fa29f862458deb5376dbeee595ea6d9f7474b97fbb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX3Q92018403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc9edfef8e374e10098475287af28d10bb2e1980779202c13408170f2f016d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92018360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935e58ff18e1bdd97f9265351e567d4f67e0f82ef4478b23617796777294590f. 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/GX3Q92018362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b49c873b7405723bbca4e09962ad4e5ae4dfc38b3d7f44476fe62d439565553. 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/GX3Q92018363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e6ed8e1eed481149703a438cab9d6c2dbe9d6c6c3365c8d52de54115cd2f78. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX3Q92018365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8656714e03990bd1db5df1fd2bedefdb52ab1e7cb310d6dc143e8b2f89bc815. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:05Z), 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/GX3Q92018367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92609c78649f45831e73d4fd0dcb46e26394e70532a51e14384cd0db9e401e8c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX3Q92018368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572da75f4c6210e27034ce532af909be1b8f16bea4d2a12842909b2d5902b3e. 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/GX3Q92018324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b708ac1fb50071b2d141b7e3c7c9a443cdb67457726740de6b05056e8ab627. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GX3Q92018327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ec4a4e93acc898515c862f040abd86a1c95717e0209a59da3502448387c85f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX3Q92016190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91c3977ad676d850a6d9e1bef96a841ac0c2e079652714bf31dd5570bed2fe. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:52:50Z), 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/GX3Q92018332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfda750c381b37424333e486b836526557ff48912ef1bc0bfff298ac6da5ee22. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92018333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bca03bb51ecb1039b6e12f63764792e487d9c89dfd165977ceefa52505a7c4. 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/GX3Q92001754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19988c7904f323fc96aad847390c2794756414dac1c3f4e1e546ee92a1ee4f53. 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/GX3Q92012780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7140a6f0e53b852e8c5e0d680d0b3ae61ef7eb715d893b4ff2fcbda6690f40d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GX3Q92018431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e5ee9f3fe29bb4d57167a709cb7077a97881c59fc3e4162b5e3f9f546e878a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92018433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700d49d3b3b8ab65b05ed101627a32897b094018a63f743dd879af62f438107a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKXN22103443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93496ee19f4dcee28d1eecd6317bf7c597e4250fae24da1e657a79cb53270bcb. 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/UKXN22103454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc597bce2b29382e267336065a2b7774ed4c2b7374f0091c8a54f2f5df3d6a15a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:18Z), 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/UKXN22103488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188605561a66432b8076534d34bb6601957ba9bf6235936486d7ff61d9d0f5aa. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:04Z), 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/UKXN22103494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e21eea306d3e5d218a4e11b3fc7d101e75fff668ceb2801c6d29dec777e3e1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22103506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e12f0d11452790d38e19a30e59237cedabc75ac11a8b5950a063ccfb2dee08a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:43Z), 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/UKXN22103512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf843d2cfc25e788e4c212eeb2aca95d29f4196f0190f8390e9244f58e2da319. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22103520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4632b11155b85caf753fa77822cc28001c4c1d2fba27e8d97510fc60e0e89f. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/UKXN22180810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fc141130f34ff3f5cbf57702832caa66f1508bf7d17bf231baf923599d7875. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UKXN22180831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883d36be88996223db3f9a2910a9e06f37377b14478e45cc10ff3dc18771d5da. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX3Q92057808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453c390e8476b2cc9fab7a6ed07965b705bc97f7e13339b9b27301551eae64e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX3Q92056079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8354a1e97d5765a6f97b812638f2e2020762805632866bcb105f1f68514c9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX3Q92161353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9c317d04ebaa33decf3daf84d9f1fc352a16f5d7aa1b0dccdda185ce84940d. 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/GX53U2073142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659aee6896851d0d01ed19119afe45973f3e812f4b942de75a4179a6518199b7. 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/GX53U2073143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f31a7deadce053f728c8061b1968e91f641e60f9caf6b080e3822cff9a55581. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX53U2073144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883d36be88996223db3f9a2910a9e06f37377b14478e45cc10ff3dc18771d5da. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:35:50Z), 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/GX3Q92057808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac894381950974cddeff7967ed46ce9dcf7f180655ca5e3955ad50ae7b829995. 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/SE6XX2153434.