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 0x8fc670533a3258152df3e6d8cac1ae0a6ce57b26bc73bdea36e24a559a7921ca. 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/e7c1c270-cc57-4ddf-95fb-82ef2dbb0531.json and https://artists.proofprofile.net/proofs/artist/e7c1c270-cc57-4ddf-95fb-82ef2dbb0531.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 0x085c08d3360e4985974fd4471fc01d0c081398bf241735b938c364cccf1e3f17. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:15Z), 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/ARF070701173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5efd9e8f14fa6e2eaf95c8aa69df36ff89eeb5e00cc8a74ca9d87adafc970f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:27:43Z), 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/ARF079601842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9612c3fc68ee39e230a5bf330e869ef06583e2a59050c0d4af07a22cf564e27. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/ARXB69900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e9de4de364bd22b974e6e1dea9846c9667d7515a16749d441330f1b17717e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:42Z), 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/ARXB69900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b26cfbb34a9b20d9653faafcdc13e1ce28d5f9dc367dbe19f8befcb00a4fc27. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ARXB69900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d5e396754beaa9274f09af7f6a69201d4c1a64095bdf46d2eb2420bf0a91b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARF070701120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199dd61208917d9dac9143ddb173c73dd188ba5f56e2fd39e2cd8a9d33849b0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:47:12Z), 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/ARF070601684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cc6e9920dbeb61de0a22afa3e2861ddef84ec8719cd9a5864030368fd0aab3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ARF070601666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d3baab7f9e003ac41f2df7862aecce4ed17bbd047b0108ac82a12ec729d52. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ARF070601668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7890c632ede4d2c3a9cd8d489c087f98155c5b2e73f5f44cdfa53c239c1e2254. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ARF070601669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e86b1ccda0bfe9e3ee0c3e98d62f1224a3a55ec3c0423b559bc79e1d10348. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ARF070601671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25525b74456a52b8741251995a017e8f259da90b19afc3f4616db8ec79cb328. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/ARF070601674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd83ac877ea28c2b478a8371dfb4a2f428fdc7cf56d10f1c7b0ce3d50f0085. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ARF070601675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177a6a3a0e1ce09cb7c3e3f4ef62589671710898b709aa352a5e2fa35e439d60. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:32:14Z), 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/ARF070601676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd73597114d63bd2ffd613b27c2f8139e2b2976c97ad9005db775940f3568b5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:46:31Z), 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/ARA590700944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8614af5ee971fef1fd3967cb15a85a141cd721dad0f211b0e87d49cde1af5159. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:52:54Z), 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/ARA590700948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbdee71b8a747aa9c9836a161dc41a3314cc028aba0de99230be55f8219d6cc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ARA590700950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6104cb6f553eef0d9d0cfb649c3b232ce6d17d5b13892291a06e5b5798b0d161. 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/ARA590700952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef09a3098206d0cfad4ec3f47deb48aea81cf21d4c2495e3797590cecafd737. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:39:25Z), 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/ARA590801943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604ba797dfa34e7e66f6e1368f58783e3b14690ed76ac5ee36089a3ffc247fb9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:09Z), 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/ARA590901490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049574c06c9f41181235d68a8d22eca36ffc91602763b1b39367ecd3625b1127. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:51:49Z), 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/ARA590901492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4577865f3cdb01d0065703aef98de625b6bba7865129d79ceee8a2ac98ca6253. 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/ARA591002323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d916a7fdd59b4e7169a3dd37e8780437879cc6bec37ed6014699442a41060b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ARA591002325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daa5819bcc1ad82991e9b73f0bc70e10c5301399e964cb8bc59f43d5b1fd22b. 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/ARA591204447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e98df31904d933a1df88fbaba904529d80c1883950d8b37672d9513913039. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARA591204452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c22d16833690cc6cc4988cf63c6c79bebf7ff6ca12b07daa55fd9755f74a811. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ARA591203282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40a52f7c58ae3ac6d48c7b96b02f77eb78cfb33e71ea84ba1fdb2984f020955. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:00Z), 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/ARA591203283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb923399b5bfc8ca7a931d9d1e2017b531db00f8217844eea463e23f325dd912. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/ARA591203287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2e9bb8202bdac89b6cb04a9612092af2e35429fcc13083de7799a0bb650c44. 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/QMDA71548780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77fecf38d393afedc0879861f8d1b76c7533ce4382ce86503cd3055c23ee6de. 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/ARA591605422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81fc4affe65f08d8a4eb4141311d017711ac7bd6a6d928fb76d40d33ef9742e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:57:00Z), 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/ARA591605426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ccb185bd80f15e7501f04d4b9289f222ce78d44be42828d1433adc42ae54f8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:57:23Z), 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/ARA591805571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6fb84511da2ece4ae632fbb56534e3a1a162f802f8c0980bc7e400acabfe93. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARA591805572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cbb5cd471ead313d7ecdc6adf288bc8f8e5e11d6cf996702ffb9591bcf623c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QM4TW2072123.