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 0xd3009a54b9f6853cf2c6888a8d3da653b4d468e80ae03a3c9906423bea6b1d36. 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/e79ac244-6554-4fef-9ddf-11c35b662999.json and https://artists.proofprofile.net/proofs/artist/e79ac244-6554-4fef-9ddf-11c35b662999.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 0x73677480b557ff61a00efa63fa575137c45e9f31319dfe9fa05de81331e66459. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPB600967806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dede397641ed9f9ab7102c1db8ab1b5db0cb5a219e21ad1158a4899e44216a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCJPE1669892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89f53991cc1e4f612e7d639c00c9d0d0dad7c29d623e82a7f539b8ffe5a5b76. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCJPE1669392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07530c7d193e9ae203d01710ad5206add793c7fec6cc4abce96e35a420ace0c4. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCJPE1669393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ada45958e9c8f1d848e51b988a00e01987200071111e7859772ddcdd268adb5. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCJPE1669395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2e1e8abcc1c83d9ba75daf0012d9de6806f9b76b4568144343af0b595a9d6b. 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/TCJPE1669396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd668b336b017eb8f829ece3798eaf905d2a0edc5a0f487481bb1d0cdf0cdae59. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCJPE1669398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6dead290762c3d074a0c5ca7f99f535421c760f47ae4a91fffcb09104d338. 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/JPM571300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1abb52bd3852d9cf013c5c142784088d3bcec81946cff3a795875d1a30dc1. 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/JPM571300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea6dead290762c3d074a0c5ca7f99f535421c760f47ae4a91fffcb09104d338. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:48Z), 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/JPM571300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e34647a7bb1fd59797fe51d3b883966b7be846ead65d716fbeae3130dd866. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:37Z), 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/JPM571300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e34647a7bb1fd59797fe51d3b883966b7be846ead65d716fbeae3130dd866. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPM571300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b69282c73083f17c98298cdbefe23e10757ff0b2aca109dcb2c44e904db40d6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPM571600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503297f9ed5bd32e279e4a22ef8a0476fed91f8e9cd70fb6bcc3c99c584e170. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/JPM571600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d79fab4d34ddce61a0b56d36cdb72c2351c8d9dfc60ecdbca3376cbe21a638. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPM571600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048a16a7ff148f7cebb42d1c1c89415ea244f4af421a6e1b2fd43eff5ab9589d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:17Z), 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/JPM571600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede3da897487b9d327d9a61db5b348142eb1c3b6fefa81808dd4632562b98b85. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPM571600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea968b294bc47a9cb74440cbcbd12e33c8ab55842186a3e44875471dbcf5d7c. 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/JPM571600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce75e9ae75139283fada0f5b987fcdc8f23d61a2fb470ad5b856c70e93d8001. 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/JPM571600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaac31b743e4ed5f45fbefa669fd3efd08e682b3b7ebcc527e04f28d756ddef4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:39Z), 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/JPM571600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b111cbb2d6c6649c742265dae96c6ffef57a5e812cae41bebd3f03445c4ded5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPM571600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6989cda76731d5fb412d8432a908612d80a53818e3692fa497f840ca3edae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPM571800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1c0ee97d965bb991a59056c65f16d5dcc126c2c7102c364049c82614573f36. 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/JPM571900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63e230610824891bce2814e8ad8826806f0c7692f77ee36be179b4e7ea2a7b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:33:45Z), 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/JPM571900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71baf917c264849def0e9a156d27d25dcee3796b3e93a41ff2e29c5fc379840. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:45Z), 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/JPM571900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d5e970c19087ea465918fd2bcd90c32647ed83d725d6d297bc8a938662cbaf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPM571900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4893495a89a3a20546d3162071d5d89a7d5a70a7d9931c817c991744f50b48. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPM571900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48391d0f311595dfea637c50aecc45aec531f8148b4764dcf31e3953bea528e5. 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/JPM571900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ab17952d461db9e470e0299a12e67ff69edecf09e97cc394681271a7bac37. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPM571900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1c0ee97d965bb991a59056c65f16d5dcc126c2c7102c364049c82614573f36. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPM571900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63e230610824891bce2814e8ad8826806f0c7692f77ee36be179b4e7ea2a7b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:43Z), 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/JPM571900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71baf917c264849def0e9a156d27d25dcee3796b3e93a41ff2e29c5fc379840. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPM571900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d5e970c19087ea465918fd2bcd90c32647ed83d725d6d297bc8a938662cbaf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPM571900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a5dd89e26587f2b0b019c7a721948f9c5afc05698013ab073a152eacfd2a1d. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:29Z), 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/JPM571900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb4efa7ad1367015c98e71a3a594c79938d3261c2693ecddb9e825fd0693d8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:28Z), 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/JPM571900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a699baa0add4d1cc86552af66b035ff37d85a314d63bc06137f89bf37cf2084. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPM571900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ab17952d461db9e470e0299a12e67ff69edecf09e97cc394681271a7bac37. 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/JPM571900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382ca6fc29606f1ba51c5e711370d252d36c030d6900bc2dd62545d91d7457a7. 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/TCJPL2532536.