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 0xaf8740335736c34f7f158eae5d2c2168bbc92acd8a10bc71d52b709339a01cab. 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/4d5c124b-d2e4-4b9a-abc1-570a91f5bfe3.json and https://artists.proofprofile.net/proofs/artist/4d5c124b-d2e4-4b9a-abc1-570a91f5bfe3.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 0x392d3e5cbca54a4204f41a661681745decbf7fe7548479002ada2a3487f5dfc1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:51Z), 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/GBMA22090175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c3d0aa8d1871126e1c993979b1b6a91b59cce0939c69844eb23b08af765f5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:45Z), 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/GBMA22090176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08503de2e4f33d3aa30629f4e773f8047fe1277957bc1b1bc4329abb3d4c34a. 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/GBLFP2003062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd89e423d4dea30ef58187f4bfd3677b252ffa17f45f1999685fbd4e1e5943ea. 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/GBMA22093021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a44a55d1c49ef930389b7cc5d8ef4f703489a28568333c1d651446d0c1376d. 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/GBLFP2025869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b962b5367ecb682bd7bc67cdb27f69e719dd42ff6a243d76229f7d8407abb04. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBLFP2466701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed114a3739d7f933b121706ada32d60f311696c04f92ef1bc611631eca13cec. 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/GX3Q92546405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d462c2bcfed964ea692f777b0b5e74745de3a5a12bd1c57a57498df597d72. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92574135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0650c04b2421c2e5643d3bac67449d5629b31cee9bfa3f9b9c7f22983224fe. 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/GX3Q92591806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c3a1d07deff6ac0f55941a6b5528f22587cc740dd3cfead4ca776a618453cf. 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/GBMA22553188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6430493a22f9335dad7b1c31115ce91668728c0b2dfa2d86e854a04377118f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22553189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592a60c52d713689e73b47b0297bd25ca9d908eebd1d4063e518a927b8b1192f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:50Z), 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/GBMA22553190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9648ca465a2ce92895987acc3c7c646f8d1429d82b24367947c242029db4041f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBMA22553191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabda1d23d4c4e54ed8887057bf1a19a10570441848e6100b2e7fbbd28e6a6f7c. 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/GBMA22553193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21241464dfdf0de7e2ff7c1efa3b6ce3abdc60606f2104b1954d09fb545853a1. 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/GBMA22553195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba936bcece56dfd9e5cd78cb80eaa1ce898e779ce6cf6e77602983f8c33ae5e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22553196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404fb2b40d0cad751ed599829328164f516572bc7b8652f72f62155465d733c. 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/GBMA22553197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5a02829086d7d5491f6a9bf4ed6ddba4524f3a9dc1cbcc3beb225e0f2d151d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:07Z), 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/QZTAW2572513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441c48bef3df76e196afe5f5fb61c5f1d734c5fd92c31d2543eee148758cccc7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:02Z), 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/QZTAW2572514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7d4795f4cff70e95594df3358b9e0bd18004921e2ee63b6eac45155a0e1dc1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:21Z), 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/QZTAW2572515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee97b03d70454c49dfda735891706445816b54f8125ab99924952794239509e. 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/QZTAW2572516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688d33f4064a3818b8bb7ca74d6e4a347a4b896ffd9040849e5fb8fbfafbbca0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:02:55Z), 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/QZWFH2581751.