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 0x259b010b43fa0ce381d4e74c2a90446d220322859604727011a725b1730fd691. 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/e26fb550-1d68-4944-a488-2063758b3b24.json and https://artists.proofprofile.net/proofs/artist/e26fb550-1d68-4944-a488-2063758b3b24.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 0x145f83ab54ae3e59aa308c2f549b00f7a1a2f58d5711592d1ca1ea779507962d. 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/JPT202100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a3b5eea6aa85ce3a311c807eb0e0db4abd1638878a20cfb413fd7f2538cb5a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/JPT202100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6fb4b5cc8688fab202287461c7281409e7bf7ac5462a4de2bb9781105ee858. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPT202100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de8bf4fb7430e2098480c9176d5035c74984d0dc17b711fe14564cf1c8be66. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPT202100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de8bf4fb7430e2098480c9176d5035c74984d0dc17b711fe14564cf1c8be66. 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/JPT202100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3716e42abd51df149f230d3e448357592e98985e5274d24f7bc2c3b666fcfa5c. 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/JPT202100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec7969a82d5ea62c8d627e4f9bf34d5ae34a9b1ee92d3fae17d5e4b4193ed48. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:18Z), 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/JPT202100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec7969a82d5ea62c8d627e4f9bf34d5ae34a9b1ee92d3fae17d5e4b4193ed48. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPT202100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b995a89acd9387debb472897da73c6983c34bcd3c3486ba1db6cd792f707b8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPT202200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f240c915ccd221efb264ef0447d234b526391d971bb1920c9e69638dc00437. 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/JPT202200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dca474a2d31f6e265e9021ce4e3a94d7a73669f5ac5b32f404fddcc36880d5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPT202200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75fecffa539d58be6e83f4a39e6c96e6d471e5053b95352b21195a2c21ba2f0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPT202200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0dc591fd9ad358b0e4d12d4dd9166b74ffebc9089c63896dc5ff0cb9b03dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPT202200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede6b20974d9ac6473c0fd17d1c8eb4395df31bac5d4023025f4bea9113050a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPT202200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b995a89acd9387debb472897da73c6983c34bcd3c3486ba1db6cd792f707b8. 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/JPT202200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f240c915ccd221efb264ef0447d234b526391d971bb1920c9e69638dc00437. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPT202200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134ee758afce3eea0ba6bdaab228893d0291663c4209448458660686add50039. 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/JPT202300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134ee758afce3eea0ba6bdaab228893d0291663c4209448458660686add50039. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JPT202300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3c705fbbcadbce5eb9b530201899cea75416497b92965f67761d0d8f2162c8. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPT202300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b781e9cf20e47e921b8d406632c1cd51e0990c1c4267945c52b8d83a1cd4089. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:04Z), 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/JPT202300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b781e9cf20e47e921b8d406632c1cd51e0990c1c4267945c52b8d83a1cd4089. 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/JPT202300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26711adc8b414d5726c9d26066eeddd7ec276a6de064dac11ff404672648e711. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPT202300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26711adc8b414d5726c9d26066eeddd7ec276a6de064dac11ff404672648e711. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPT202300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce9c839b2b2ffbbbd9f064ff4b12c3e5e2b4e31c911cdcab564c89d5b86edfd. 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/JPT202300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce9c839b2b2ffbbbd9f064ff4b12c3e5e2b4e31c911cdcab564c89d5b86edfd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPT202300059.