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 0x8c489a78c1e14c09cf8027fcab977f95f4e56bb4ba122b47832e3a2e64580dee. 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/92fe3f6f-9a5e-4192-971f-e492f321f69a.json and https://artists.proofprofile.net/proofs/artist/92fe3f6f-9a5e-4192-971f-e492f321f69a.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 0x77de59342f675706938928e9002fded7fd684647797999e342c0260afd2b6cd2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:43Z), 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/EGA071000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd0fa89f13a3c79f41dd9f4b1616ca18f2b40074b5118f188f65329657652c. 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/EGA071000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d52820f100aeddd4b27f9ab7c8cee1e861c4358642a7dd8e620422d6a4d3ad5. 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/USX9P1406553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b332e28dac3ea1b3758ee2c7738fc3fbcb30368dae50944cd71382df011b34. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:59:37Z), 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/EGA071700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fa7d2b7adfa68ebf257bc43fbbc61ab4e376df8b7037d324dc418fc8cfd0fb. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/EGA071800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b66441d1fdb2005e833030e59b50efbf3d351673589f166d4b4b739a6ea28. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/EGA071800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29101707310e4855bb36031001d55821476ddb0be3a6811ed510c0d626fe14af. 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/EGA010535425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e08d88dddace21cbc7481289cf3761a4b936053915e95a0922723727c9b2c3. 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/EGA010524995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d03b650edd90c6074692ada351e6e488de19d20583aa70c49c7ba90cdcce8eb. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/EGA010535441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f3faf46b08c1f305e2d05b2361077d3106a971dc7c8e0ecf9247a6714f1c4a. 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/EGA010535445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ddc13e45966921d23b9b3f77ca9a75315c0f3870050d905f79284db2424956. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/EGA010535451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eda0b97c1d1d3c26a754494f13bdeaaa76193a6338c75d82c27b1d9a61f80c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:11:03Z), 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/EGA010535423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7586c3747c65f3cc6b0fd3d5539cb92a557eeee6037873ae5ec704dd34623597. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/EGA010524818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27fcf5caac5381d135677911f4bbf23c6f1bf0cd14c9fac329a20e7b44ff587. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/EGA010535433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4bb5a6f2fec893cdc6f6763660a0293d8c0def90bb96a3217929511b222f7. 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/EGA010535429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa453508a7a656dcb823349d11457f9ae0f522265c510c6da4224ebfcf5bf6fd7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:53Z), 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/EGA010535454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f407c90135c3e4e6a2e19dd1ee1568ad6543d70fc1c431e0ad68f157ad1c9b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/EGA010535442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6810f254e9c42a490a0acbb680cc264bc85dd713250125f49abdb6bfc5b276. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/EGA010535422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975df71f871f9d04a38705d5621867ad2d5dd774a7e53a6f8af1d0b4a4dfcf8. 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/EGA010535444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb941a55356847cbcca092b2fbd540f4d7d0c52c704d08716bcc895fb40184605. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/EGA010535452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3a2d805a80cfe6c8fed0113bbec124541c069f6370ec1aaac80db08c288506. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA010535439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda88d5dbf1a576597d08cb279b6b725bf03032d02d26aa764d36088944286ff. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:52:39Z), 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/EGA010535426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001fe26abcf2237a6775aecb8e6b77b36fe12e64788d5d4a977828cc055143cd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/EGA010535430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ddb66a7009d7f054cf11f72cc7c47cd02b2698bab2a320b95a06c9c813a37e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:53Z), 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/EGA010535431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac56cdc49a6af5bffae8def0f7716f9df41dd43a41e039c02d6a605380448fa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/EGA010535432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7253bc1c13054729d950ee41cd8e26bdaf19935d1082102b010a57bad5c071. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/EGA071800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce75f616b9ea3f4d72fbb6b0e82340a0c4e1f8560bbf367ba6011dbfd3afb3cd. 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/EGA072100985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949b0952f8e24766b5754692cec14fd99f5cca709841ff5d9366d1486551e0b4. 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/EGA072200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c856e5f2bd0d6dea6bb41e2bba77f4d8df63fac2ace75aa3754075a90e685d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:11Z), 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/EGA072200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc537cdf2d033e9ba820bc554ba234eba4639f6c4418043536fafc67006f2eb71. 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/EGA072200451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dfadf5f0b3360d84b5a205cc1ea3ee33a8f084a3b65d3ff39c806cd7ef6ec0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/EGA072200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dfadf5f0b3360d84b5a205cc1ea3ee33a8f084a3b65d3ff39c806cd7ef6ec0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:37Z), 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/EGA072200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e8150117467cdfff24284617ce63a18b5f5e85d83495b1e053ee0f6c3c643. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/EGA072400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0516fb31b406f7abf6fa5b3602f2f7b35e855db02a268f254994dc1d805e06f0. 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/EGA072400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4d3e04873f45e3baec7f14e549bb921934ec76c23790e873b4d6f33d3455f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:05Z), 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/EGA072400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936d01e1f99a58232558e1c4c2dc451b32d6f678af4421d8835a5fa2c17ad106. 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/EGA072400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09561cd9caf948fdde72f7f18f02e8435aeda5928a9c28f2c94f60a0a13b223. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:10Z), 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/EGA072400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f43540ac64e5e399a55651a28411d4598652b5ae8b9312c451799edf69bf82. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:11Z), 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/EGA072400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e8150117467cdfff24284617ce63a18b5f5e85d83495b1e053ee0f6c3c643. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:04Z), 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/EGA072400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a223b0eef5ce7cb4198ec50cb547b9f6f328380b300059a014d855e9e3c76f4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/EGA072500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e1e2ddabda21c46ef15caa1fd1d9c867be222ee2ad63ffc0126a1e0296c3d2. 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/EGA072500168.