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 0x4b2b766ff30d484398b9604c2c07daff93880cf182a6fb30728d4af4b19bc325. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4625b46c-fe72-498c-850b-acd9f067f78a.json and https://artists.proofprofile.net/proofs/artist/4625b46c-fe72-498c-850b-acd9f067f78a.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 0x35f188997be66794832498f5e00e610d25dfb92f1100b9cc4bb0f15ddd625b7f. 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/USACX0900524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5e47a30b7c39c1637b4352d85be82a97f8942d98c728146b3af7862d9ed199. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USA5W0402836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b3b91c52e634c919ec251dc086874183c7f07e23f593fa415671ecf68ce2f9. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/USA5W0402837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de68e2cecabdbf6245c2cddda5a5fb494493e1fe679374b29a30d2cf2997d86. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA5W0402838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08758870bcee1e0f850482870f5b6d4a3bd6c1f2ddd25f1cac37df8d226c91b. 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/USA5W0402839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086e2451ab2b65d50c53fef8defbee734c7adb0697f8de3fef576d5c628dcb69. 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/USA5W0402840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd928507bff62faeb83df75d2382e4dbda84f3c632b67299d5b6699c3f76b113. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/USA5W0402842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa22f39489a0ffa12c50ad008a3711814418f3bf528bf44d0b805907a0a709. 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/USA5W0402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629c7926789a94dddb89bebfe5a92601adc08c17c0d09602037e2dbe08490462. 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/USA5W0402845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa343f0aec1b052fd8ebeb1ea84b2ecfdb6d3d88c27e3854386b19298d800e21f. 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/USA5W0402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9255ac3578e3a1ea7fc88da6db052df5491bc9aea51b89d7e10a2338a754781. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USA5W0501657.
This is My Father's World/For the Beauty of the Earth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe136f20982009015a266737a9c59591e418b532137a747327eafd92b47f65c1a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA5W0404436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3bade3497281300bd33392bd06a66ea7ab614a80519231acec8b2f7edcde6b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USA5W0404430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09562c6e8fd190b0efff18a7bd853688293db267d6015838abed403afba590. 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/USA5W0404829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef2fff0f5b125676bde93d4e8e9dd659312c12dbcbcb9d4bfe2aacafa3057b5. 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/USA5W0404832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0d0878667066a6014de4d93540d24e0a816d3e263863a03e074c7b7592eab6. 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/USA5W0403228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ee9d74ffa4e691d731c01e772c55d48b256359073184d66dc8f7cc2ca8461. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USA5W0403230.
The Acapella Project III - Special Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c93b9f30ca0aefd832bfabc858927b39830886f06ab60c2d2b8ecba25fe9b. 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/USACX0700209.
Receive the Glory (A Capella Project IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac74bd44d8d254d35a969c339b5dd4cfbb0ca86020a0e525ed8ed597c16315c9. 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/USACX0900549.
A New Tomorrow: The Glad & New Breed Recordings