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 0xe9a7ca9e75259886e6ef386213e7f90346d4fc90b3254bbe30d836ed9ce0e924. 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/f6973c78-6f3a-4d5b-85a5-e048b76e0a3f.json and https://artists.proofprofile.net/proofs/artist/f6973c78-6f3a-4d5b-85a5-e048b76e0a3f.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 0x1add4f56f8cb4d746b182eb4d8aa0563fa11f47cb4b752da5560ac57f8758a1f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:56Z), 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/USSP30600352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860952c416c9637bb5cb3117b1c0a71ae308b54e8b26c3d6ad8472a04652faf. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USSP30465023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b55ca3493a62b7fefdb55cba35c18081338d94381afa2bf68223b4cd674c1a2. 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/USWT30321574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc80e4a4c4df434efaa46949791899521bd0bd5f4a0d246a20b6ee3d9999dd9a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:42Z), 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/USSP30600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b65dbce7fbc95ca4b66cb358faa43887ef6d0d8ebbd77212eac9d35e4eede8. 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/USUM71400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02f5196d38c72ebfb9fb1e327556eaf3e1acaf59c2ab5a861480262636e469. 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/USUM71400303.
Revelation Song / Holy, Holy, Holy - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90194aa2e77c451c909fa417a53947008278c9193b951c90c844793665aea9ad. Chain 2 (Bitcoin): anchored in block 957842 (2026-07-13T10:08:30Z), 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/USUM71400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a1a6b1cbc39ca76480183c97c171e73e32e66bfb1c1deb7fb9711ea872f0e3. 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/USUM71400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92a685820b8f511e078c4c22e8ad56894dcffec8b85bfbfdd3ba048a366b128. 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/USUM71917695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09610099ee329bfdca2fde3a4d4a065b9166200db8004868f0528ab5441f6ca. 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/USUM71920634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d698bc2592f5e1961c63464d92f18b13a8a64c668f59b1cc2aa7d62aafb12b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USUM71920637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfece4ced4948bd484cac06bca2e74492922a31b65da8184998b0cc9c1a7f3c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:59:46Z), 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/USUM72007202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db4b483300f16cddee8402fb526a156074bec783c0eb67b582bb4c76668b840. 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/USUM72007208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48da926561b4d1e796d4b50032a7619396177ad70aa1dbe643dab40317fecfc8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:46Z), 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/USUM72007212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6fa47189d629ee500891ce98b1b61998fdb2e94c2f7e204efdf482ba2f105c. 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/USUM72021355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a2619761e2ed850a81cce50ddba55b4d726df3af2ee593ea7654f20ebc8af5. 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/USUM72021357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfcd90a3b5956c9e0e9f7a245be6696ef3e173a069dc641a52c6f5f2c7d9971. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUM72021359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf838a58159ea9502725f74962d25fe4359fb70fc7d32011669ca8098dced781. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:31Z), 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/USUM72021362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35bf770d90949b6d3018e0b80284450bd13c37c56ab061514936a0aa311183. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:37Z), 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/USUM72119572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b6bdb38b3ec185aecbe0afae8cc5970f08725c2c8e3135847d353374c302ad. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/USUM72119578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05447d0531397fe43c7f9770272c68e0c42f6c795d649690cb084d8b6917ad3d. 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/USUM72119579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac407277b6a1ec36e27f9ca1b7a50ec9c3ad3182f6d5530605b1639d250d57f. 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/USUM72315140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae93e41f10e2b28bfb2477e510116bda267635b80832137f8a39e832d8d1827. 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/USUM72315132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e985408c721268642ed38aadeb7a75c35e36c8eef5cd603fdfef69a4292a4. 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/USUM72315134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d57d32cd724694851f6ead5ab6f64152e8d7c84f3cf1764b1149c422b696f4. 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/USUM72315139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951e57ecbf0c418e60dad190667678cde44803eb07fa6b0bf71fe03924bea544. 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/USUM72315133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da279c9eb9ad277392aa0dd93db3d4a06e7f4f9b066caece79a06d5a420c684. 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/USUM72315138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd117c281436e8bc9275b42b088caf9cf102828d881c5e249886806e7d45d03. 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/USUM72315135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17db2c80cd3c793a3a28de68d0016626e57eb4d1c5739cbe0d7632a58437445. 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/USUM72315136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468357c163bab0d25d86c457bf33499e1006df79af05a0115a45275727e1373e. 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/USUM72315141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b398cd9005bfb8b273b181db099f95f552190a2e00e4f6450d6115d65e8e29. 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/USUM72315137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b55ca3493a62b7fefdb55cba35c18081338d94381afa2bf68223b4cd674c1a2. 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/USWT30321574.