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 0xb57e0fe9ad9398d43d8e784286ad4595473234b89defcce99dff442ef49001e6. 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/c3d49314-62a0-4c05-ab6e-d2e595fbd590.json and https://artists.proofprofile.net/proofs/artist/c3d49314-62a0-4c05-ab6e-d2e595fbd590.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 0xb25ac661f97666b897ad53192fba543bfcb4b0d67b3344aa7452190f21b4c7dd. 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/AUBEC2579488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb97ec14c762651c7cd25699fa17a1d706afd97e96a635df0b7ef0f4fa24a79. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUBEC2579489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e446ce60e312f713370d78589f7980b9f3b8a72e1025aa608c43882e7efe4. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AUBEC2579490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68732aa83f783894a451fd4692ec8449f2133a190cfdf57142d1dfbd5f624db. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:10Z), 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/AUBEC2579491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad7ae3a3dbcf9b681e648f93afcf2d32bd8b7fc7af35606969fae77876fd3c0. 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/AUBEC2579492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972327c195adf3a8fc42839f4d998feda0727c9a747ba7f933ae8bb70d0b980e. 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/AUBEC2579493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dd7fb421f6ad6aeb21661e849c116df05c1fa0ea8d8b979f21588805269d0c. 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/AUBEC2579494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f3475cb470dbbe0bb60158446d861611c3f0a80bc575ed26889b31c0b2055. 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/AUBEC2579495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9584b3e738ceee2f198ec8f40c1256bb83818c1645d4caebefe21975a7cbdb4. 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/AUBEC2579496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac452452a4403ebf08b7a0d4fab209d64bdddd171c3a9ae691d9fb3f5585c8b. 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/AUBEC2579497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee597db494021b4286d70bf734cc51affbb1fb1330c0f05acd3bbbdc223c21b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUBEC2579498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060964c1c303aa1d3e7399023b24bc59b36083d19e0ae6ea102ea4c20ce90317. 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/AUBEC2579499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04939011d9e06e4ca25e3e6297cfca16bb2cf5f06db69ddf2561aada66bd2a8c. 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/AUBEC2579500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8677485920790be094890a6229f3b859491809010afa4886690bbaa4149a86ac. 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/AUBEC2579501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7632c8fd191a7098398be4627eddf337b9dc8bc15dab9286cb390c3b16f66642. 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/AUBEC2579502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ff1dbf7778c09223a41f10fef425d269f763c23024316b97a967d60256bba. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AUBEC2579503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a04cd2c592940fb1a17f7dfc2c767f64da4c3c13c9e6171e3f730d1fc88ea9c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/AUBEC2579504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa3dbb5a46339eabaf48ecb1bf622411e4b7ad7839aaefdc63df7f648da190d. 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/AUBEC2579505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8a7a872c45e218d15c536d9f41c15031b9d9c0c9597c3f0974e2e5333268a7. 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/AUBEC2579506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa131870f193e53e0ba815defb7793155b70c5bc35f1d9173b90b4b5a71846579. 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/AUBEC2579507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a389321e392956b43db83c8684edcc0061698c2dc1f1fb5858327e46401b3. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:17Z), 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/AUBEC2579508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd79b85aae3ff863b0b02640c57e185bb1fe70d4889fa5b12f68652a8f8145. 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/AUBEC2579509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0408999e1488ac55bc05c8e76b02594b44baf012fe31bb04f46cc27ea62c00. 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/AUBEC2579510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f99fbd0d580c6a390bbad78c9effa30f4867a883adbcfd7e88b4538129e501. 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/AUBEC2579511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7484c31c9637467ba5f38b75be82314e5bc549ae11485dfd0122e3da5ad15. 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/AUBEC2579512.