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 0x433ba674e840b916d9017c9a1bd826c42cfe46e732654669bf38b966fd77c34d. 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/21a82898-9ade-4af5-9582-138c1c567a00.json and https://artists.proofprofile.net/proofs/artist/21a82898-9ade-4af5-9582-138c1c567a00.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 0xee9d10ad62f23c3317147dc1ac02c0d4e7627cabc740f8ebe2cf5d3b4aeacdd8. 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/QM9AA1643179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd6712348667ce83594006609ac3d5783c13d6ffc7f9d6ed72d6ccacc46e6a3. 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/QM9AA1643180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f38dc48ad122176bf75f1cd30bc42ee9e0f9c29acdc1ac8ff9c41ec5f10ad15. 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/QM9AA1643181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab49913e49aa449f494411a30632ee8169e2c47e9524ad0a8b330244d92bac1d. 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/QM9AA1643182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec6b6d9209b21dbb2ea37c2b6293894ed88e344506ea3864f8d903fdaad12bc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM9AA1643183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a61d6af4b1898ab5596290d5a1d7756d581a4bdf4ba7a8e99ae200967f472f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM9AA1643184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db0f05216f142c1e16f6e54e3a3ec8e7401b6fe1fc5bf358317e1bf601e1ae7. 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/QM9AA1643185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11eaa04405f7153194c0ca3cafb07e939efda92e839a57a2783a5f3a2d04686. 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/QM9AA1643186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc386b5c7e8924a0d415467b2e372e7afb511e5c44426884586d49d09f54c9d. 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/QM9AA1643187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20ac1d38c3baadff56849d28398c1ec4b8cffbe6f17884473bb70d2d0679a78. 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/QM9AA1643188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b94e4d43fb441ecac6dd7ed9779754e9935e18aa9ca601b90dda3fa6ee53fbb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM9AA1643189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b1561b5d47af34b22886c9154e90dce867dded9c3cc425053a129a8bcedd2. 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/QM9AA1643190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2881051379a6f7620b0520a0758a109c47475d1c49d76c638c95f17cc75f4106. 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/QM9AA1643191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2d6ff626e1faeb21c564559a73d5613a1b62b2c124b5cb17d0404649dce96. 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/QM9AA1643192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676731ee6c081056e2d70ee924538fc2bfc30a23572749746c9f2edd91052dbb. 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/QM9AA1643193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5161265777eae18fe5b6edc8cd901ad4f87f25dd75ec58cc9d8acf87c5d1b09c. 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/USHM81747043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be644443ef3b18cefbff5d05b196f7339658583c6e6c345d30684473e4db7c3. 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/USHM81747044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3473e657e520c74de59e4a07a2c440b2057038bf5f2e42dc161b12a31bdba645. 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/USHM81747045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036926e9fe755d4c52923ba0f62a6162c3900aa4a0e36bd927eb8316e20a5fb3. 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/USHM81747047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb770af7b04a94ab3605afbbe9bb9eaa138a096f4ffa56fc37fa61e6f3a357773. 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/USHM81747048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf887d4fb3c68d0f6dca40ff4e9a614c12122e2ec8acb24470f93e6ddcd6dc7a8. 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/USHM81747049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912ad5c4b48edf5adebae948820bfef697c06c63300354491221c1fa6c776251. 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/USHM81747050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99debb07478871d95e1a7c580f64574240d76863809443252955c5c359b260b2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USHM81747051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba908709ab888ab70e191e48bb0f55ba9ffe47b2e11c01ed45a22d0bd4008393. 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/USHM81747052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9ee55d35000ed59052f21a0d24d9c1fb32fee6498705c29791dc708f0e90b8. 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/USHM81747053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70e645fac3abb58e0c2fb2c7da1ad4c160ff62d74631ddf2d43bfd60f412fb. 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/USHM81747055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d608e48014d096262e05e4930282c711bcbf3a22f8e831a987ea716b6cea64. 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/USHM81747056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6e866559814981d141ef5e75eb43cd026523ad2d93d2a3af0decdbdd162c5a. 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/USHM81747057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450c70303d0635b1d81152e3758f81f63fccc07a59af1cc7c61cf754fdc0fbb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM81747058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0af4b88bf31715b19458e800172cbfee81c608cd861e01dc282779e36bff855. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM81963885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5823a3faa7424f91e54496347af9156262742b1ff690ff9de5db0117f05d2f63. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:05:23Z), 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/USHM81963886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf13e28b3eedc78d6b6fa5b90eccbdb304438b7a17651d8308affa9406b7886. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:54:15Z), 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/USHM81963887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd661fb91ffa440822a7058d0debd96c2e6867d771a7f137c4061873cc4a0c054. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USHM81963890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301b4609a44af27a4dfae1c6424e803b0cbb3001396a04de66d7b73fb7e473ea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM81963893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244d4ad5dec83fe39a3dda26228597202a1268146946161acd0c4f35fe8bbbda. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USHM81963894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac6c91e1bdfc5de7c5bf61211b2d06497403abe06e78d35f95ab3c0de00adaa. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:02:47Z), 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/USHM81963896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f170f67669e7b603e6351fbe08fc77d430da23c1d188ff71bcc84f89f9224c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM81963897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1cd00e2fa7e8b989096918dbcfb702257d8b56b9087388ecc8e587cf4a01ed. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM81963900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc2a432d23b6b58e2d1d6a0daab1d5b431c3813e86151c938aa18311cecefaf. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USHM81963901.