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 0x1bc91bdf3bde903d3f365f5e31c7e1278d8b32a6757ee05a344c55880437650d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea9be512-190b-4896-a05d-13435531de41.json and https://artists.proofprofile.net/proofs/artist/ea9be512-190b-4896-a05d-13435531de41.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 0x1c3403d4213b9009891d9f548cbc711d1292a762611fcd06838d08e5e55e4758. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZF8N1946352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ff67f44673133279519e085031968e9dce0083a6a779472176f871b03fa28. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1225433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20294bb1415171860dd50608ae5f3c42a4594c7cb73f2c5b7db96266dba5211. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USUYG1225435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbde8af7098aa49c9322dd3724a3c024911991baa01b49f6523129ac55224fc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1225436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cab9216527b6d6f8eb1f95c49213d4c10ec9016c7d38f08d3f63519728bbc1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:54:11Z), 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/USUYG1225438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128448529f5b5bacdfd09df2a6db806870e5640b99923998e5795892c747bf19. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/USUYG1225439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1958e17d2a3fa7378716d794b08611aa037e98ac00a30ba7a6ddfc0649bb7ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT21200431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f3315e4fcfd86eca20a4cc4868010b0e64414ec027f844d85208f7b67f01f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAT21200433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfacb1bd99a8a7e045015f55fd91adb402ef9111d213af01f4fc34865e16f5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT21200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a5fb6da9942ba47fa1ef333504355367cead2f84f1509f33d336147a97fa29. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:06:41Z), 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/USAT21200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c31af89877c51b8d646ff94567bf6a0998d95f941409a06cde52a46bd34d9c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT21200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02f67d3c98849dd8e0abd8d88c49c88da78543ecaff1d2963c0b0b9a2cbc86c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT21200438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf06abdb1e9930833bd1ca8c4a1022a6481f5065641c6f9f0ba912cbcc15317. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT21102323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701c627c72759b72661e561fc90d0caf401fbe7a77864f360e4ad129da72b350. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USAT21200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654ef1866ba2a1d61be134c84a26d023b719c9153c3c587507c2abd8d9a5b352. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT21200441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4eb455e4cd4222b786c492f310ccc2f3bb01687e1a55a096b3626324617106. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1257121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab47694fd02764a148018b816a9b1776bf0e9c880a4173d9bda4a9e128638f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1218948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f0e9a7e7564220c0c2a6572002307d662d24eb9294da77d73173ed0807dcc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1213563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5799f0f7de3d3c9d8c71e5a858d666207d44099f4bd06ec20faf040bb0cd8a7d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:06:28Z), 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/USUYG1210848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa230b0b70bc7399ab143ea9507d523cfae7fe6bb9f85fce5c279a44b559c4a53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USAT21503059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf06abdb1e9930833bd1ca8c4a1022a6481f5065641c6f9f0ba912cbcc15317. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT21102323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18abc7e6f88b3251619c25193d63639a9e5802c7a593d3faccbd1af4a7e937aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT21101293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e40befda13034eee1b228be7c1eda674c10d8020fc1ed97de482ea49f8423a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1251815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc866af9481863d4fa3ffebbebb771c85df44c9d5db9a2555ff1b63e618fde1f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1251817.