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 0x76486b9e4733cea816ee808481cc9cc133792098d14ef3aa25cd421d0f96b25a. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcbf01ad-ecca-41d8-b9fe-c2d7e4127dfb.json and https://artists.proofprofile.net/proofs/artist/fcbf01ad-ecca-41d8-b9fe-c2d7e4127dfb.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 0x34592bbb5c45239cde847c6ad2279967a19f9ac84282e8758313d52063fe2583. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/UKXN22586672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f5f7f9bf348cf5b011dd7d60d4baf5e4cc1609fb46bb3c8fb91cf49660ae3b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:35Z), 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/UKXN22586815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94f39e87f34886178c5ecb181e347ff4917ec9f72b0c3cd5f34a3c5949403d1. 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/UKXN22589956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d883914cd302bb2fd7c3ce5904c1a0ae1a267fb0b9863de572c528b40a5c8ef. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKXN22586858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd7002b08f106ce0c197c4165fd73b0b2a6c32487e6a8aae3c613bc795c8600. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/UKXN22586673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c2ef83c59749ebf1b0f35d25dd2beb8d3f7e74a8040e700370c7cf5a553301. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:35Z), 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/UKXN22586855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753652c6d705748794cb3f61e3f173ebd59570fc94517faa9356a58840daf78. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:11:12Z), 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/UKXN22586792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5830131079082a18b53860a33d4b68fcd835142749a6ab4658e6d3524b0e1ec5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UKXN22586776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd924ede1341a1e73bae43d13eea2a7b67dc998d16bba5b132583eb91a14ce91d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22586790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb07fb3cf0952038a4f75c3d61ea4f0c11aef72a91f5a719ef64712c1f7159c5. 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/UKXN22586857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a807d48ce10ef9a4578d4b092a45b738aea396368cb05598df697381afd0ca. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKXN22586789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce4b0341ef7ca39b00c6704c3597d534c4a0751bb918ca9cff80975361f3d60. 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/UKXN22589957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd601c2e94115117c6f978ec05c16c7fb7f8f6416f54fe4734c44d310fddc8928. 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/UKXN22590515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c11156694ca6b7fc229c5ecfae904db5245782ba2cfe7ba64562c21d3263b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKXN22590512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b24b03f6ed707d6823fdd60a011bbebf711572711a1c8a6680108aa3bb1ad2. 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/UKXN22591435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b99278b5b693d81b3bd5aebffbcd5db462ab527cc840a9dcdbf73f40389cbd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:10:08Z), 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/UKXN22591430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb89c324b799c2f6183ff837ff070df11034a32753fe113d758f6d4d97fbcf15. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKXN22597656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016bbc81de3272cb93783cccc08a7f6f154bf3072d7211e23c8aaf3e19055e51. 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/GX3Q92549734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5227d7cf15e0040c4fb0f599b7b3c4aaef8e02196ee2a4cccf62c5f45a234e4. 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/GX3Q92550411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6949cba71eff070c2e05603d8d8569205d00bba21ca7d6815eed8fbf9256c0c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX3Q92549840.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57f6f90ef0f648538e3c78e8d926a1b06191b59ba5a8464499d088666ae9cd4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:48Z), 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/GX3Q92558891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7a05350cafc92ff4bd35277625cd946ec53451f2f66672588cfbce097ae38d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX3Q92558916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0821ce91bd669acf3aeb22972787bd7fb40941b8d06832ed52f834f35d179d4e. 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/GX3Q92558913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4c7b4d8a7a46646cff5d87641b6d4a8010a2aff91f1e75cf12fa32b3b70b02. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:22Z), 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/GX3Q92560181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f20f378d155588f007c518d0b5a59af09da391785c26954b42444f3179426. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GX3Q92560061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db1a5d62f0b722104560f0ece59e109cfedf5368f4a915db20c755c34414d8. 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/GX3Q92558910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab00fb660a5568b77cdb5b17ea7d93dd4b8d2da43816802788ef22f58c422d4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92558919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6040ddce6da233219d730936c1620e7a9e01e1015d070914aeff621db36b7dc. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:31:30Z), 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/GBMA22536017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc81e76fe8d6662899de5aa24cc05fec7d6671b480cfe1df610ff57feb2d022. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:51:32Z), 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/GXHG92577429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc44b2ec01bc8d3aa91a649cd22fa4b322dfe6381b0bf4ccb34d5fd41c2fde5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXHG92577428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9293252277330aeebcec3f766a93f56d2e7c96ec9a37d940cbc424b5d5191b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXHG92577437.