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 0x4824c2f622774b60f6c9a1ee9945d42b8a87d3a490e3a1c7d04ea88d5322d1fd. 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/25e7b345-d124-4593-93f7-b2dfc9a7e975.json and https://artists.proofprofile.net/proofs/artist/25e7b345-d124-4593-93f7-b2dfc9a7e975.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 0x4de861253c5e5799b723b26e8c54dfb50f3932eab57054488a23d1b0688e6b55. 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/QZMEN2256590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8009cef4c01d20b5de95038f34d8643f0f0914bb63ee5db5d2d5f5f5ecefd229. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:16Z), 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/QZFYX2345414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e3058ff59e803c6eab39fc56213edc261d3c126c41e53a33e5fe27c1998c3a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZFYX2345419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3bdb98a55a2cfb7f5a7fc9dd585330fd6195ca5165fb87ad03f8940829a34b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:25:56Z), 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/QZFZ22335067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc776ca1819c0aeb7510cd757ea7ec8b57d508af619c1c80ba45f7b8733c3c0c. 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/QZFZ22335069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d46b96468af19e360dd9d0adaa2fcebe803e791b32a09296cebb4c372b66495. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZFZ22335070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f431e0771728911899ebf0cac7d9f5ef2d4801359ef1490b9a04231a025b39f. 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/QZNMU2318256.
Glass House (No Bricks Allowed) A Twizz Production
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc5806dcae597aae65d6b50c8daf56d57c61b9b1da4ef421fae423689c2077. 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/QZDA82371786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dca19a403d57110bb70c9ece8e4bed0e54ff4c7dc6d87bcef82b9b2927e495. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:07:40Z), 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/QZES82321690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d1f5ec6a1654c42505d00bc8cb273f737f1f85579ec3bc332e6d3c06e77042. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:45Z), 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/QZK6K2393421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b43bea2b674c5eb114784262c5fe89a5a8ebae103dabc8104c1f00811888bd. 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/USLD91748829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7668257f9019b2c9596fad1cdaf801350ddbb0b8f987833c02ad3ef2b5be4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLD91750229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d885ca01d32822a9006f9a3c9598e34c00ebfa58946c1b5e20d6274db1856a9. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USLD91750234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e726b9ceac4d1dd91b873e8ab7002a3d9d3bf2f2211cc1d01245501bbca5a4. 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/USLD91750239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa7076d0b394916f611bbc630515e0aff1ae6f30816db6d596ebde912177f2. 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/USLD91758701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11aa7b07aa31c397dfb5dc0ad4cae65f7f224ce1f507eff1d54dd173b783bc0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ7P2471513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2adaf7c30d442a174f01efaa759eca3220ad1caea1e14596f15a056e54b57. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZZ7P2471514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c7e62c562998f43c1ef3b9496f50989f9cfa43024320335d5cd25a15552b62. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZZ7P2471515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c54d6d0bb4317d787d9e061c76a00c3695fc87f38076e5f14b1498292102144. 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/QZZ7P2471516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60990b3ffbd31c3c809f3a7276320142cc6c95cb323d644ac1e1a37b68591190. 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/QZZ7P2471517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe000568f8ff7dc67579f2ff9248f6f20d57a0c841502cfcb34bcebcc1b5645e4. 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/QZZ7P2471518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77534b7d4d4d82accb5600a5bfda2070ba70285db896af9c8c9ff0bb372f1f45. 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/QZZ7P2471521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ff49720b4923f28f27b79908bb37a1e88517a82de8dcfb51d4e30bf5c3e8bb. 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/QZZ7T2456191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8c80539b8da02e2b812c772ff33c6e0cc56511682e69c1893b973af9d8c208. 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/USLD91767761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1187625bfaa7a2315ccd66d78b6f6ab152b397fa35a3c145493a7bc323f15. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:02:08Z), 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/USLD91767762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb21d6aa3a02216206e74023bf11fcfc168a86489e8a2531a0dc9bb605023db. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLD91767763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec249f1e65a8a408bf9041ec89589e205a72cec97a393750e4b2e919dc545612. 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/USLD91767767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc425bb4d12dd2b9b1cf8beacf497b77461d717fc6ac51507739565adc365a807. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USLD91767769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd299b63559b00c3f9e46cab2a9eed888d2be882994eafbc6dc4fd9554da0f064. 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/USLD91767770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa352b9f826076fb985c104bb54ee1acc6222a336f745c5ee1715aa453e6efc4d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLD91769480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f614f5470c7350b20b1eeec2fba267eb6d9670adf3f8a262349693227cd65c8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USLD91772957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6179ddcab63ac0425aeb20615c30561eaa0ececc84393d808ada869971edaf66. 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/USLD91772952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bef74710d82951d36f35c7798ef931311c504d62bb1fe7efde3a6cabfbe39b. 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/USLD91772954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee521bf4d0c55144b61409454e61fb7fdc48fbcb5ab90d938e0968c556fc3a7. 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/USLD91772955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1fef985aa3dcc3b819cc8caca194f902ede661bc73ae426105c4457c474532. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USLD91772956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eb12035948b66de99e24da783e9e215dc9a014e1c1b4c63a8faf274866e0f0. 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/USLD91772959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6012dd8f68e90c6e8207fd3027c216e2824562809b7c64afea78eb362fe1d5. 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/USLD91772963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b6fcf41c54584031e3d3e54039916d809458dd97a0e4d796a4b1ec7d909a8. 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/USLD91772964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05c4bbca46a4f816b391be85064703110ca1b5482fac840a0921acceabc013. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:03Z), 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/USLD91772965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bd2af0a03cf76bce4cdd2e194b252425f00361b6244dd518e8b45b781e3c4a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USLD91772966.