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 0xf13ad82a1d1796c7d234c63737477da70987f5dcdf2cbc93de4a7dc249e84241. 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/df4eee59-471c-42d7-85be-bb9d2408cb16.json and https://artists.proofprofile.net/proofs/artist/df4eee59-471c-42d7-85be-bb9d2408cb16.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 0xfb49223f46dd55eca1c97f191202009a4c9ed57b13c864b4a0153449b1343777. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:20Z), 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/FR2X41949354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed8e6c42b58a37ba14d6df8fdae92ae7f68f79a4a02976044019776e3d3ec19. 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/FR2X41949358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db6b9318924d8c5bb2be9c88faa7d843ff9a2c55c8da78fa3d7c4b8ceeae60a. 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/FR2X41949359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4333244d052d19cefdee6d35b95771713b0da92c8b2fc492f6b679982bb0ca0e. 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/USHM81947172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1276db19ba032d487e6eda0a34c768b9db523bf87c46054aa547759219966609. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USL4Q2003925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951b13db1fb43caa18119f2ca964c90e5f5a9c130439ffdabeacffeccadd9e4. 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/USX9P2085983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5607a857ef1252dc340ab4d652880f6bdbc4abf1c83f4f7d10312ccf7ecfe69d. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRX762175530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ee6e370332f4110cffea1f7b215b24360da0c9bf4cf58150879bc0d5f3448c. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRX762198469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fba573c121ca1bb8214607147cae35e86128b401679995b1313e42ce49ca8e. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/FRS182103169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90409c3fc6624163614eda9a007c9f996c2e36619ffb4c2207a7141840e283e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR2X42234295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5129fc666ca871501a5812e7ed5597feaaca8bef17111c9c7adcc0270a0c65. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX282279764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ce6428108952911113a32198ce36cfb51820e35f83f155d0f9fd71956314d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:40Z), 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/SGW502321552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa226aa6deae2eb8e635bfdced21093cc15fbd306fb809e5f82dd5cbb4b4b6daa. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SGW502352230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78038c869a1415a09d2d69ff29446c6ce9654b9dfb0a370e320a4f30d60382b. 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/SGW502388137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc474985d1133c618105cd57a64bfb0a93bb290266333e7d05f1fed2ecffa6783. 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/GXBAV2395104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d0344fc8f31b3fef1029cbaca6ef2f2aecc15e9a54da705e4b9226ba7a673. 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/GXBAV2397545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d0025494e73849554b7924ac2753a031359ec5b71979c02e0ecda56ae70125. 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/GXBAV2411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a419d1c85b43380377749f39d08489a9f2039c14438c93b3a1a016f6ee1b14. 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/GXBAV2415354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc55cb5dd2bb800b05984591d518739a6f722140d43e413f24a479a3ab6d27db. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/GXBAV2429647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64bf6fddcb1c5f14e2e2af2adbbb2015b9fe2f21fe51bbc424028f7056fd15e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXBAV2429833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518abe5b52b0bc6292830bd54897ffe71814aefec04c13688fac23b5a293ae29. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:07Z), 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/SGB502446060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f9749ef9622c31ab2af1e4cf2e9e148dbf80460c9d05fc4cee8786e227db86. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:37Z), 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/SGB502450558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535c5e2882b164d82ede2867bfdc8945c4d6aa912967310dd6b27730d99dc15f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:04Z), 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/SGB502450564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec3aba8e3d5291f5c2b7c3874e35fa194de4c94e128e6827223fcdd26202ad3. 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/FR96X2425703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f975aad39c24230085abd2996c9f3e52388272af8071583ed4195bfacee34ea. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:20Z), 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/FR96X2437221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7745b71dcc805b924fc96606c9029a705c6cac8df41d5341a1b6d09b16e854f1. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/GXD7G2459531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592e10473b53b00110a70c35fc1879b3f2aaf0741b13faad11a1e65908b11bc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:52:45Z), 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/FRX762498224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf0694fb06eba69c3f2ec9e9c9b54a17d7609c1133442e84fc81becf23dcc4. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FRX872401732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de6a338df7050edee7fb8882611f67d92308473afa7d3100f8d08515146ed7f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXD7V2397013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c451a6a17125bd379ad02f5d02986bf5eba480ea047f2fad0853541d573553. 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/DGA062493003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb570575f78d784b7131551b647251b2a4155b343d186b3b7c67128b35028259. 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/DGA0L2496562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee90e86e56b4a780a10ce56b0a19f1b505b7ce31f7f25ec648b44d00bd75b2e5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0S2412240.