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 0xd96848fb9af7d750b0acd9165386a5b5671ca61b33e65d0d4c01b838163b40e2. 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/ac034f90-6260-4d89-9f2a-4a37db100e03.json and https://artists.proofprofile.net/proofs/artist/ac034f90-6260-4d89-9f2a-4a37db100e03.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 0xebfc8013f40a176d2ab6dfc98282eecb86e6a9c6e2d82209f8c03e7963aba7fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADW1855020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13515deced9955efae5daa4fb7fad3471a3a08229d950df3c9d0e0ac2a53167. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CA5KR1923103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0e08ef8e0003067acc8840bdac4dcf96b11a6661c8277fb042f52817e15d26. 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/CA5KR1923105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938890c20b3f9e9f6195cfda6b8815897087b0717ad66f0a854e4df0aa59c67. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:46:08Z), 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/CA5KR1923106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37cc1465f24234ebd8051e088fde8a59299819532cd53fc7106988503db8f08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR1935451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f71695a1efb89c2f291ce859db4fb41e57a4ef556dd2d336ee345350e77fed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea6def385ce766e39693303e632a593251622493c2fd099279f37a0ede77f6c. 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/CA5KR2044434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef2a92d8242e9d7487ccd80fcd37e0edf4e675559284150571a4b5a11097918. 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/CA5KR2075864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cfa3b8db61250e3c337411df69df8499bad841b3db31d9b3baefde0051477. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:23Z), 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/CA5KR2126550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4e87aa18b4ae818cf03a3a8899f55b03edb19d22511899d48dfbc5eee9ed5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:04:08Z), 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/CA5KR2128272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b722f21835fc9b7c566fa8ec8ac4d0da82151991e801044622a9a8344feea20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2142306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf1e3fd6afba065da912d894fa920306afacc742c772324047ce30ac8203b8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR0004003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96794961d9efcbfadbf57cc1d67430616adcc01f6fc981b672d90559d891990. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CA5KR0004005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c140705e9c9a52340c3a1c177cd83daa09b0540537020a6713e5c00d79ef4df. 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/CA5KR0004008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a538654845e2968e9d8caf2a2774efae690a0c2989f1c9a971e73cfbd94a187. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2216101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d5f3bdeea3d7c7b371bbd9d542ff64522f3362f34c6975aacc617a769fa7f8. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/CA5KR2230393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8d32db2382f9a13029e5cd996a41d6c48bbf26fb1dec24f54e0d0adb83cc5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:26Z), 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/CA5KR2230394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc644715362f32bba5050abf45a8bbbe8d9f9fa6114e7b2fbec9fc2f4f7210c44. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:14Z), 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/CA5KR2230396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caf7d7c970627e303cd278fcd1eae6560b473e6949fc4946bf410631edcb1f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2331124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1b86021f39e6516f9f1cd06df4a8643d412b3130be69d454ae12583b863d8. 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/CA5KR2342415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c77520e993caa4973a12b505631961382cd9a415a2db9a0d4c8376438029815. 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/CA5KR2363467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af45c14fdfea8ff828a15c6f58c64c166ba4f368d64b09b3ffb20a5e9c8e11c. 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/CA5KR2371409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16584c3473641b38837f21af6c1abda66b9aa079187336a7349c3b04d588fa28. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/CA5KR2389355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0dbd48069db1f6b859603a444be8df117093956f5d1cfb2cdc4edab30c195e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR2389356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ab05d8ad21311878bec7597bb476e16b43bcf38a0fd84399c052a45faa1ba0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CA5KR2437467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0c7ba3c50b98a72e13531ef4c3a118a184deda34f6e7291e4381158216cac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR1946956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5fa2272e258524a360af260ab039e51696a31d00f9c290752c154ace59f0b5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2099380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271abec14b9abb9f0543dfe2b3b2f0a8b619e22be786f567faad7fe7cef80fc5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR1962315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f8a644222f07b23a547db6865088bb7e1555414b9d0a7f93e2c6f7030f387. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0c7ba3c50b98a72e13531ef4c3a118a184deda34f6e7291e4381158216cac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR1946956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ba0c0deeb4c95e8e083b4038852d4c56610d1f5981aa3c02dfc9c858c17608. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR1946948.