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 0xe8f49798d4e671967e45d771a76cded0e4d941a5724b7d6c4968f185fc17f043. 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/b499c547-23cd-4f6d-acad-3f7ec67be841.json and https://artists.proofprofile.net/proofs/artist/b499c547-23cd-4f6d-acad-3f7ec67be841.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 0x398699cabe94ecf53c0d62c3e5a170504a7a648a1c64a1e4b51cb70cb80ccfe7. 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/JPS801833686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4f97c275a6bd6cc01cb5fbe4293b16457176d707f20833f730937fe66def80. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU901803502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356bccf7756634c6d100c87b8acf192def6f8aa5567a63b30dec60e84ef216d. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/JPU901803271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c51a51d39c432a297b68892c4ba21acd0d1dcf48239f4145d482630ccfce82. 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/JPU901801175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9817bb374be16d0c1388a904674e471feef2d4773ae771b73c134f8075cbd6. 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/JPU901803508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670b1d2afdfee3ed03ca6a3034d378da002861a741a1619a031e3b6ecf9f200. 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/JPR962100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412169ea8738cbbca76938eb71a88be2e42f729d525f6c063027965b39a1a78. 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/JPR502300760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a89206f3a57db156fad2558e7b4c7e97285692d060772dae286cb011064ed20. 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/JPR502413246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a89206f3a57db156fad2558e7b4c7e97285692d060772dae286cb011064ed20. 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/JPR502413246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216b8ef6c4f77d6e08039d8176c8f81c229e8d3a0ba40829defcb3da9228f118. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPR502413247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c21dd78ec2172ec0e20e12cac243e04f1c57ad278f694b04ffcd18b4276fc. 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/JPR502413248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c8331f6a694cdda87f4df10f7384fd5014a42f17479c164e1f78e1b71c787a. 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/JPR502413250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f184b5c8ed4b3c0f8f391e9c675f710246362f79a984133a2f5fe15a96fbee9. 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/JPR502413252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8de468d754807f75bafb6776fa625fbe08c7b17b4b4e8f2f9f88ea4ed35738. 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/JPR502413254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858fc6980c94ef18283e209a321ec56f1a9f594469046f4c88659959430cac6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:47Z), 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/JPR502413240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b25862eccfc58c8286c0e84262cee31b8ad226c19ffab1ff041b3e3994aaff. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:37Z), 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/JPR502413242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c8331f6a694cdda87f4df10f7384fd5014a42f17479c164e1f78e1b71c787a. 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/JPR502413250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c301d3bff89fc57f7d14239d78abda366bb30b9209a19d5cf8cd466ed5121f2. 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/TCJPI1980481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc032cb0746b786e871341eb85659ca16fef76fcaf9498851b7d84ca09db13. 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/TCJPN2017138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6119587a02183eb516bd4404335a7b909e37d0cc97f302b6c21a61d053e75e73. 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/JPB602103315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc495116812a49b2fc593578f1b05646988776637c5656cfbd164c493b47cab9. 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/JPKI01816520.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0be52e9f541e932a4e09413bf7c835d7f7dc0d691a6734bb774365573a9ec8. 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/JPPO01904421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0be52e9f541e932a4e09413bf7c835d7f7dc0d691a6734bb774365573a9ec8. 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/JPPO01904421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ccc859c29476b6f723a92b89029102244cba850e81abf7838902482c30581d. 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/TCJPN2001922.