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 0x6717e3464d4d0018397f0a425925c9732a2bc77b4439aac25fec618b4e9cd68f. 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/5b304dd7-afd8-44cc-acce-7d2de97732a8.json and https://artists.proofprofile.net/proofs/artist/5b304dd7-afd8-44cc-acce-7d2de97732a8.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 0x0173b4aca411eae1693380af1701cfe63256c6cbffbceafb3d9f7625e09d04d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R2152271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dbef1b04e961af5cfadb77c3f123dd63f06f8f76e01ec22c2bc4d18f68003b. 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/FR59R2152272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87af63d2b7c5da138a6e497f21c9c487d893c14d6d7c72c729f3ede4c120db. 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/FR59R2152273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bafcd2b22491424dca4fa4d75a8072d707dd007beead41eb20ac0bcb7d9bec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2152275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1acac2ed3dc96361ff4501c206edaaa95f2481b937139256eb7db399d275a3. 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/FR59R2152276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2188f6171a95051ece716c611ba399500e3897d768f9624add799834f595d. 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/TCADD1724946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7da3e4bdc47b8988a10ce7153870f2f8c92cee62b7139bc85a3d544c46fe7c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCADD1724949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb791fe55a03afe4ff72d6bfb1489ccbce2ad1b2e460ff2924dc6ca53ab525c0b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCADD1724950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751017f56a6ea42ebfee2e522c425cc8464c627c4958818e15df7d7a7f17132. 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/TCADD1724952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb98c8c25d0faeca1e0a3d014074b78cb978ca5a16cafcdaf98b5b05c27b06f. 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/TCADD1724953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9021a4767c25d511950fc1bf99d73926cf9c1f78f83df68895a8c91021f92f. 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/TCADC1713923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536d483263475fdd87b595cdc8218541fd347f1c48411e62dfccbb150edd787. 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/FRX762144846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3669b0ac1b6ded8965a60007b739675a19db7f37a144d874d939519e45e2c8e. 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/FRX762144847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3669b0ac1b6ded8965a60007b739675a19db7f37a144d874d939519e45e2c8e. 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/FRX762144847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd624ce413b6e53a7f4605f5198f32a026672a1c91dc740795c10815efb862175. 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/FRX202120608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5bd24a150a45320cfeea41d334e56dfb05163042f38c2e10fdd395d47605ba. 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/TCAED1906087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5bd24a150a45320cfeea41d334e56dfb05163042f38c2e10fdd395d47605ba. 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/TCAED1906087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a996b2fd0bbf48e87d6608a35f1f3049e07a86bfb31041d2fe681bb2e9b212. 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/TCADR1808391.