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 0x95b8da5a0ec0d29669ed9a804a8da7cfe691a07f2f66de754d9227f86fb27a83. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3778ca15-fd1a-4d81-a26b-75555965cd57.json and https://artists.proofprofile.net/proofs/artist/3778ca15-fd1a-4d81-a26b-75555965cd57.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 0xbcd2991ab3ebf9aff92277c52c2f7e952329c240babd47d1d58a4cfab9e23650. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEZC62350492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91882a1ddcce0c77169fdef8962537def7b907387fdfef40bc50c147916ccd24. 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/DEZC62350493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1e69492a61f7cd24ef155665910d21c40d4d250564bfe2752d81f48e5cd91. 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/DEZC62350494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a63a3e75bc70b720b9f690047c8ac4479b3119eb9e75cb06f8b2cef6907783d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:11Z), 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/DEZC62350495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5646ba8f276194cab741fbb4aac730bde3ec340e2cec504d614fff6402edd77. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:57Z), 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/DEZC62350496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179aabe6c8f16628b1f0e42033312c16526e88cfeb68b741c44819eafe676b8f. 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/DEZC62350497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33470b35b052faf1987d6317f6b67fce2d6b0ab25b7bbca7ee1f024716ffdec4. 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/DEZC62350498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4adde39cd4a279b120ee5fd8291bef5890de9b41e18d0129b1ed38fd3c2712d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEZC62350499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048e8dd8d5d9250d5555d771e797056f00ef432d929b8adc8eadfae42d47385. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:56Z), 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/DEZC62350500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aa60e065606202febcb157d3aaf979f90ae4fd67c8aae364768110ed744e88. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:59:54Z), 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/DEZC62350501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7394ad3d7ed7c1038a0d34f067ae89bdc35b148f0684eb826965cc43028a835. 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/DEZC62350502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623c30801e6a92a86840db7aecc4e89606b9f59ef9d487a579eeea1c7c0a7a8e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:35Z), 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/DEZC62350503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a8763f1a4bd1a91cea20827385023c51eadfa65f08619e2bf4e1f624564af4. 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/DEZC62350504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f50a79fcacf7bf7f46aedbc4c3aaecfe08e02b90878f244a42a7b5e79ff55e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:30:05Z), 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/DEZC62350505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb01c48e4100df10d36aa52f1abbf77daab2eadeaf28c60804573dfc753151d6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:29:48Z), 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/DEZC62350506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b483378a10134c8fa771dbf5abe5d5593cb57cb449476dab50b31f2d284bc8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:50:33Z), 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/DEZC62350507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439abb356bb2c91c49b9e43a89bc8afdac266d41dc4d0ca10cd1ff059a35ad81. 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/DEZC62350508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bea03c12ab877cb32bd16463176f3a2df72e4ac7d2717bb021995d095ac35f. 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/DEZC62350509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b2c96fafac2b7f1b96aa89915fc5f46472dc93b4a3b44ff0c3dd59c33bfdd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:04:08Z), 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/DEZC62350510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5456ea6fca01efa5325832c682f1b3e6c5c845fdad752ee8bb8729d42782b3a. 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/DEZC62350511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9666d0022d84ee6ddab2edbf787c3c0b8a4b43952426d60588e71b5be178df. 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/DEZC62350512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24717208bc3f59259c1d623c1f177d8e30fe28446f39e2e30d7cfd1b34a0f78. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZC62350513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704dcac00dd6e45c36e27e8d98ca3d4cd2ffb1a0e8067d6d596d132daebd335c. 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/DEZC62350514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a0fc98b76654a39122be0b6aa9026e1e66b7290371c08444554f261c12079. 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/DEZC62350515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b974bae2bfc7429e5c5c8333f1875ad2c224a51df43ff8abb1bdf4dbe4af5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEZC62350516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf608604fe323e870c4230c6764ab861829502bddcbb6e9ad30b038c2e7fd4b8a. 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/DEZC62350517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93393c1aa766b26cbe54ede0d8229f220d161bcf89a609d2ea1309402275a4d4. 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/DEZC62350518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0873bcd20ce703302443d73da95c226b16f65516ed27ae229f5096e3704cf66. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:08Z), 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/DEZC62350519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f1cb58bf7ebd240724246cbc23393f323ca8db92e3b7e2c982bc2c35650c73. 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/DEZC62350520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25b93f5530b3f0ae25e6a048b15eb962ac6010bf9404b619b66bbc4404ba31. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:55Z), 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/DEZC62350522.