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 0x5f275990204420c7d89c7cab64c8aba1ffeccd9a1998d4708a8c5c4333662066. 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/805368ab-a434-4e28-9773-8688a96a86ab.json and https://artists.proofprofile.net/proofs/artist/805368ab-a434-4e28-9773-8688a96a86ab.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 0x2869dfd9250499e3b2feb61dc443e974d439da3b016b4ee900ef7b9e9aded97a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:04Z), 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/DEZK82106216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689fcbf6c3efbe3ab5ce26999561dac1df20b866a54d1a051287ea417f6d5237. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZK82106217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dafb7e543c7ef021a4aae5a58e95c365d03169f226cf883a9c9b6da6ed6610. 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/DEZK82106218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123287d8bcc9d1898b3d892dd43aef025c2d230fcd3b206d24816b6d63b8f3d4. 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/DEZK82106219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefff4d0693bdf57cc12f09ce55c2adfe757974ae8835db62bcf5564a1f9abaa4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZK82106220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0b490fe52c08de61018121acb5d807ea748010502d8e36d95417ea81fed36d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZK82106221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f2e729be806b4c8e852bbc639aac7d567b89ef4a02961278be69ee7a1b3133. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZK82106222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf707e86fefb9e076c8f1bbddf9606a7286fde4aeeebaa11eea01b23095d5c5. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEZK82106223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaae05ba32281e769e284d0d9b0ee1ba0fc965247f3fe1d3988e05a8a5a2ee8. 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/DEZK82106224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b71473a66266ee5055f5cc28661a988a3c2fd46a041514ce5231275461d87. 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/DEZK82106225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb6512d295a2902201d64266b70d2f70f7094f8b7f80716e473b7697dd1a9f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEZK82106226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2c47cbef6ba964030a554f61d023e8ea99fc48883cd98c9b92c0ffe470696a. 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/DEZK82106227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54075ae8c33c5f63f507329b82e1d545149fa155b103ed24b40cdf5f4d8a2ae0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEZK82106228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19086ebeeca86d19493efedc9b0db76049f55f891e000e4799e5e32075146bcb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEZK82106229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845a36bdc304ff2a35fb3e1c6eb87de00b788e1c6cd7c7c4d8c0d2baf8068817. 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/DEZK82106230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c04beca6d58cde48ef1974dbe510d2f73b15e5e2e94e9b665e22d46f502e40. 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/DEZK82106231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b26917c4250a03ed2da12910cccc54d8e7a6fb9395e24fe9d6db28be442665. 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/DEZK82106232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c178ba40683d741609d335d85aade72b24606522ab4d1e531606ae77cff9e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEZK82106233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4cce9bc6e7c5d195fa5a2d5cc6b05c065f76f0423e5081ef8aae822adbf9ab. 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/DEZK82106234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2e746c393dade8216812723c76ee5fff230b094eb851d1ddb311aa5cc902ca. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEZK82106235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6d0d9b5d4d873d17146b3c2e0c91feffc05143dac0797bc6800852fe722e72. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/DEZK82106236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da2e862787a0ca63789bd210baa163ac181fcff7dc3b13c4bc97b2673164c3a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:55Z), 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/DEZK82106237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b68ccc989e4bef60159f59068e760529cafc5c44c83c5582eafc004a58b0f1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:05:52Z), 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/DEZK82106238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc73919028d9507f039b7bfddd63dc93af9dfcf5238caafe092b055553249b27. 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/DEZK82106239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e5f770975b01793142ce96ed8769ac411daa55c6d9ef5e24e36447d1b51d32. 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/DEZK82106241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7687b2809f9fc89b6e5989b2d7caf142201c5116b79cfceea86f63dc57beb69. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZK82106242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ef52be9ee92064b8d0646960ec8048d4c3351af7f5bc01ab08ce35296c776. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZK82106243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97b126aa09280806e797f4e3e0af7175a1ea7fba2a28a2737d2673b9f10f3ba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZK82106244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfde672e875ab77b98dbc0d1f83962b0cb42dc12114d97fadce3f0f8cb05fb71. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEZK82106247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c86c6e351e09929916a33e4f3226aa3349d2d4ca1e2473361d9f35079ae56a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:53:18Z), 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/DEZK82106248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a400e5918ce380861b8af8fb5fb7a626d338e8576a60bdc4b7bc1bcfd5341aa. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZK82106250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd6201e94b1d0a38aa7ff55e31265ddc6b2ef71df9cd1f3ec5dc82a1adc3a8b. 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/DEZK82106251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b6ceac5d69c37a478b25f2ffaa3f670ad5d2b7d482c40a8c7d400eb1415ef. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEZK82106252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2497eff4f41649a898041873f71e74f6c9928ad338878cd9b157275c38f671c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEZK82106254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eb884d2ed2a2bf179d11b8a1fb1a1cd75539b05d22d8d924f100bac96dc7b8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEZK82106256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd006a87dd8ee0a34488db02c8338e9cf039443f99b77b7be69d3d37b1497c1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZK82106257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27f0834682d089ed3bc6b0b05d50ed73d0824d4e2544bb37b000186b0c07e9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZK82106258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e227530ac1635158ef681b79b0c11a53f06379bb83271eee30d66c3f263f9d3. 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/DEZK82106260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2cc22e88ecdad3b95eea9e88f4c87bcfab0ba57181ad901f150bedd42ad396. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZK82106262.