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 0xda70c534c1e76304d060c3740a20c9a9768a7da021a39e8181c7d25e03b4cd8a. 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/7f311b52-1e27-4c75-8309-210e76b40ef3.json and https://artists.proofprofile.net/proofs/artist/7f311b52-1e27-4c75-8309-210e76b40ef3.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 0x785d4b1297e904843b897c8e9dc2b6aaa4f7161a9fef8b1adf48e04d584e1b9d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USZUP1010941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c783004e1b0f9cfbe3de799c48115e7982a064ce290eaa2279225f4826728e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USZUP1010942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61af0bf7b632a0f661588db7cb20649bf53dc012431318ef872a79c96a1b943. 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/USZUP1010947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971bf6afc57a292cf9c6f6dec11962be1817838694871526c70ace076a7b9b9. 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/USZUP1010301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853f6af007bcaeada139e41e7dd5171604a8b8522d65e721bcd6f38ce4146b2b. 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/USZUP1010302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a24baff574ae126a704f5014aaad1bb144a055f074c29e7bba73644e7f7ce5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USZUP1010303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d6e116bacb2ad5c95a05a6097592229acc2813d223965439e5e1266ff5e572. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:18Z), 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/USZUP1010306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61780d1f44a479a899bb1923805011e13e27e2168bdfc9477931a399a7ae05. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:41Z), 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/USZUP1010165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965698bd9984124af518e537882cc8c8ea99e7f0dbefc30347fb9743288d8717. 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/USZUP1010167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0937b851fff2a7699887c74a5ab94323c9e3989ffa1dcaf541322a836ebf34cd. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:34Z), 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/USZUP1010168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01747b263f491e647f4d758e12908459c8bdc0bb941e42184b8288fe722ef2f3. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USZUP1010169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c8f426042f8a0f75004cc62111ecd4cfbe5a7cfec88a34aeaee7f4a298f1b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:35Z), 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/USZUP1010174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7995d215c794eb81b874fdfeb934de8b9d78b96db1e0ded50a5351ad583396. 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/USZUP1010591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a85c1f4c53425afa28646a53c32dd70c8808a45697f82274cd18dae990a272. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USZUP1010593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c88d5076ef0747c90f092f810c5a836ecead1863412be72010ac89a812f83. 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/USZUP1010594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ef08e8ed883b4b15c7c6f21a5429b31709b656ff71bc27653d9468a3202fa. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USZUP1010596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1597aff7f2675d6641fae104f7c80472b878909ba799f9ec210f47fc67c58554. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USZUP1010601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bd4efaaa7731f13b4e15e1946507bfadc07eaa027cce8f04bbae3021a8b67c. 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/USZUP1010606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71441e780ea79f966a7a4e9384747fb1b47df62f42130965a2f5aea9670f50f0. 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/USZUP1010607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d29a78f371cfe94d533ccad5e0849f8fdf009c6321257d60fb9cb0b6e6ee1f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:17Z), 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/USZUP1010628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896899a5639c0a454b689cb3b753da7e8134ef8deb2fa911a115e1f6230efc4f. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USZUP1010969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73387a3837c81e942288ebda97e98435ff2fbe8c906cbdb35fd5a79e419c4cc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USZUP1010971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6354e48ceb047febeacc46572c8ed1ad7b1f43b6ba75ea43bdc6f6c1afcbe0. 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/USZUP1010976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650ee73f49a272c8b974785a53f412d0c39a3c9ffb242f1ec26e91684e829c1e. 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/USZUP1010988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c153891a6201addb4d7e7ccd9d512dcc129fb02dd65ed9e0fc0eb03a8e4a5b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USZUP1014344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fab04cfa626ca75c5ebf3250735bbad3881b4aab4714b2ad05d5f40ad943a9. 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/USZUP1014195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926057635f071f03d111ef6f89278d45c738f22c3e18449a5761f35357a1b97b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:14:20Z), 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/USZUP1011110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438bb0cf46c6d2cfd891f1f18cc2302bf9af5b3228017609fb00b93446128af2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USZUP1011111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2664595afe54d367a029cb62bf94873e26b856dc035e9fee3d48a9874061a55e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USZUP1010206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b9b1a18c4df4da916c2c5435505f6c5b4e388b41dbaeeab46b571d11729713. 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/USZUP1200983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87b1d187a3c178978c5bf064a9c2dcde2f1fdb4236625a8d0613792c86008d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QMFME1445607.