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 0x3557618cfe66651d8295a7f7025210363688ae3db06820806a3285f5f0c50707. 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/b067da1b-dd13-4f57-99f1-9ca3410106d3.json and https://artists.proofprofile.net/proofs/artist/b067da1b-dd13-4f57-99f1-9ca3410106d3.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 0x0b2a4a9956e788b0c0f8c086a3e365a0c56f7a6a668c1d9df64b59864fe76c8d. 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/ES5592200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c0f18e266e3307091f28a10d268651e7edc47c6c0451e0d9a2bceca83279d. 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/ES5592200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec076aef376f62c430c63a201eae4cd4f972d3b3402f357d3f6afc2cdfde200f. 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/ES5592200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0ab14361eea92a23798cbf47e4e4c7f4901d597ef12590c675eccff4de8567. 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/ES5592200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351d599860c2727929f52625f47015a3ae40ceb8befa85ce11238dc819dc6e49. 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/ES5592200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf70a50e995d2953870348234f6db6f114455386af3e7f439045448dacce53. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5592200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579fa05ba7ffc8b3535bcf7850f97dc337fbb6d80facab9f207c2ac3c4ed9096. 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/ES5592200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb4387b03dd9c4c6cc5d225286ab5e313d7446b838ab8a385b7abfc9e29636. 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/ES5592200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e005e36d884638861228bb0e62fb90ee44101a691f9c3529ab74d064d5cd82. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ES5592200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61cd33276051067583cd3c499cb3cf8fee60102b0f05612e01ccee67b8ae9a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ES5592200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423ab65a8862907e03d99f93303cddd9f1852606d9e0cb376f0f6f6830bfc59e. 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/ES71G2409879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302364f6471cde62babf863936dd2e413e0500c7844fd5c3ae423fccfd67e09. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES71G2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea466b8c1a41f1c191c6815f310d810767e9c383a4b3ed0ec5e590169a73d5ce. 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/ES64E2468675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302364f6471cde62babf863936dd2e413e0500c7844fd5c3ae423fccfd67e09. 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/ES71G2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351d599860c2727929f52625f47015a3ae40ceb8befa85ce11238dc819dc6e49. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5592200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02baf31ade9fd7f710bf700c15679cc3dd2bd800b635adb06aee83bb88eda216. 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/ES5592100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dde14c89f2531f905422284fe7ae13f543ff19834f2f94b10695f70644ac93. 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/ES5592100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7004f746a1817961cdbdc028098aab3ffd697593ad61f99fce42555498b034f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA081950474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ee929b0b683849bc6d910a629971d6a4bcb014ac2634b063fbc8e99e18e4ec. 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/ESA081950475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1614cbe552cde6d7db6b213728e6dfef67c27ed0f176e0c6d88e1b881bad9c. 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/ESA081950476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48816983f5cc5aa060325e05d9c635cd20f895ad22513782c95932041d0f70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA081950478.