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 0xa9b0123bbf4e77953458e0a9d1a06b4378730e155a0885ddefe070cdade3a604. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33fef651-4c11-46a9-8ae0-b816485d1f5f.json and https://artists.proofprofile.net/proofs/artist/33fef651-4c11-46a9-8ae0-b816485d1f5f.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 0xc718c09e0602262ec854e180bab8cd15a41cf6514b342f61714bbd96a5bea8e2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/IT2I92200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b41620a3b0e2a162dfaa7dad3951f32bf7f0163d29404079de9cf5f25ba594. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IT2I92100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c12bb2228e99a02ef193143f4893ba65abe1b4ea3dc75b4b0bb6dc9682208. 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/IT2I92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f61e030694b594a0e6c4564d1403d2018d72147969af63d2c7f2d44101bb73. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IT2I92100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdd17f8ace6b35edeb4e25e254becbab9b2e8305c31ee1a03dd91a5ac355fa1. 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/IT2I92100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f10bd321d634c43ebdd216925f7a5016cbee55876d801932acb036c6cdc8e0. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:27Z), 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/IT2I92100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ffea372209e84b7743b64d847d6ab532a6041629a00bc81e283680cd9dcbf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:27Z), 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/IT2I92100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5006917c3e62f446a863ff7c889a6606901cd63c8b25e92ebcd623c25755e660. 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/IT2I92100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e17dc1280d5f48ace482854645928e848519e2a0d1edfde44cf03a86b2b17. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IT2I92100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8dd54acbc36124d683000a77ab5219a806f7cef77546edde3f6fa7e6f92bb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:42Z), 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/IT2I92100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e23f87bd9131235cba6bd84ecd7a16bdef2c348528488dce7efcbd1db8d1a6. 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/IT2I92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109232ec9178b98f26a7d7e5c6c2b11ff0b9410411ab4f21deea714b144e73e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:35:17Z), 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/IT2I92100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5437a3ec85baa8816fc00570c569017349b9c584bd607d6fb1c36357fb8a865. 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/IT2I92300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f79fd5b358caf6f02252d31ff3285dc0483931b0de91346e57ceb65afd240. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IT2I92300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0918ddd3d5b0dd7debc5dbf8c573907d4e95be90276fc5f1d49d57cc5059b. 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/IT2I92300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7eb6190b22bd0a746ba0eeac379c4629f2e5d73f011e3907c4ab373fd13b4b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:36Z), 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/IT2I92300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a962f72972e8e7e856ec46c14134d0ff517fd8624fcece553eeb3a7af4ebe83. 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/IT2I92300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9f8e5eb601e2e9d596d4d9a3e3aa0653f148e5742b07d2db304ee87b04388. 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/IT2I92300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4da05929e9af5acf09d09d521d770a3f92218eef7f19fd612bed8aa9764642c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IT2I92300028.