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 0x4a392de19beedfa601dcb1bce5196aa4d276c7da60faa0f146aebd7700a0b4ca. 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/709fa00b-31f4-4470-b615-27d8d517fb60.json and https://artists.proofprofile.net/proofs/artist/709fa00b-31f4-4470-b615-27d8d517fb60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vánoční koledy, Vol. 2 (Pokoj lidem dobré vůle)
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 0x188fb0f0ffff0dfd2cdfe97289a55dc52579be6517c401a0d2c7489079277298. 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/CZA381305201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc82f466956b679c3519559df6e14a0ef478acf36c3a20bcc43e3570c5d6806. 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/CZA381305207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07fe044764900cd900aa01fda55361041bf2863604c64ec24258382a12a10b1. 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/CZA381305230.
Vánoční koledy, Vol. 1 (Pokoj lidem dobré vůle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e0f50db75ca92d6d83594dac14f915ec0b0b2d52c0a475507faa138dcee77. 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/CZA380327202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd016bfea5babf8ca8eab4d033b032ec29f2036ae046a847afccb5256e4dd9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CZA380327203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150feefa28feca3f41fdc9062acda12ea64af1e2e2e90f0840ea2196c75b1daa. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CZA380327204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46fa9b43e21bd62a66092d407845641ea8d6ff69695ff631589bc2419603e30. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/CZA380327205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3129f837558006a659973a762ce205f8f8aeb8e4db6ec8e0183ec12f8cb07a0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CZA380327206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c2bbb945156ed71fb4fbf4fc44a71066cedcb2a0be4b75a6eaf2e2e168210b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CZA380327207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4da1a8c061fdb5d1ff8764ef0ced0bfa101e7672b3dade12ae6ef95190bc00d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CZA380327208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed26e04aabebcf51b0e09a4ec405523c4238843a7b8222095050a26629dbbf6f. 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/CZA380327209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668fc19234ee1c6203eefe99d2cf948450122c1b08d6f144b9296b5e947bdb60. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CZA380327211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09759d4cc392b7b8ee5198b5d6783ac4d54f3bbef39619fd443536d2b734c23d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CZA380327212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d78dfcbfa1d3a099c79f7e75ba8a1e382152eb88bec5283b5889bde42215d4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CZA380327214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b3695f512dc9824f7b0de887bb2dbcff7e7ecd520efc642bf2a5e04c8d7e4c. 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/CZA380327216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfd854c15904e75bfbcf1b18e1980f5b32dd4ae2057ffe65b02712757f5785c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:36:34Z), 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/CZA380327217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4c8209d0f87f1dac964f444f80f7db26a1e90b731bbf27556158be67d239c. 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/CZA380327218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183105f2acd3ec09b4ab2f7954a93c79e3cd1614b129818c624da6cd1c4ebda6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CZA380327219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175c28fc36b82f199bc868640fa561c9d05dfca88dd96139483cc66ab88529b. 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/CZA380327220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdfc9f967d7d3e519d1e48f4d910f07a882eaa97a01b732174c567571b61f87. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZA380327221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cfe87355343d970eb788a86cec2262991956278721058f2854ff858ae9a69e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CZA380327223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5786e6f7b6c7ba2b61f6e7357bb25b80b1c818743835446de60d20a015bab3d0. 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/CZA380327224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01afd7f99e623b744d5ed7ebb2efd306c3a2e71fca60f40c805eb35d1ab3d0f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZA380327225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5114c73a1a9f29ef8d8825d5689925d5b1f9564b2638aca2cb957f0dcc893. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CZA380327226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231386a259e4e4868aa675979f3fdc9fb7bf827f5f181017abb2b6567a6127bf. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CZA380327228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba804d52ba717bccc56bd2a658bc7caaa376c711f966c96fae3503e68e2c8e. 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/CZA380327229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebdb169852f3f21ca7532deb22bec3e12ed7a7241448670ee81b3ae62ea4c37. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:27:15Z), 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/CZA380327230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042a84d7eda3fce3ac2b4e293a4cc8277f3d5783d62ed29dfb6d57a847af3ad8. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CZA380327232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21a05c1aa46c5e2dc25e37e27d5088064aee0e7d4f4ddfa8803950e0f381f5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZA380327236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc688c673f512e3052088c25155d94e6a550bcdd0da1c8d3c432bddc8526e917a. 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/CZA380327237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90750dc7b9cc088871a64993567339ee55743a1c5f632d70b61a8992dd014157. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CZA380327238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ff5e9775b5b2e362c48a28cce355696aba154d40b16743e30ef1d98517a803. 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/CZA380327241.
Zlaté Vánoční Koledy (Více Než 40 Nejkrásnějších Koled)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c2bbb945156ed71fb4fbf4fc44a71066cedcb2a0be4b75a6eaf2e2e168210b. 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/CZA380327207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd016bfea5babf8ca8eab4d033b032ec29f2036ae046a847afccb5256e4dd9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:29Z), 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/CZA380327203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc4ec4eb50e3ef8a134c031e4452bb0005ecd1266c7afab7398e62c7931b8e6. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/CZA380327210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01afd7f99e623b744d5ed7ebb2efd306c3a2e71fca60f40c805eb35d1ab3d0f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CZA380327225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba804d52ba717bccc56bd2a658bc7caaa376c711f966c96fae3503e68e2c8e. 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/CZA380327229.