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 0xefeae6f173288448885846415bf335f507d812a3b12e0f26d0b52b3c05702fa7. 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/0e1fb8ec-7f20-47ac-88ba-458d097ec297.json and https://artists.proofprofile.net/proofs/artist/0e1fb8ec-7f20-47ac-88ba-458d097ec297.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 0xf5785973a45df84e64cb3a6f4fa34d5ab4ef8de3297041edb8eb6400ba28f686. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRX872052348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d062b3a11b21dbf83b5901445db81677e7597393e210041bc9c0563a19522. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282006543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122bc0c6bedbc65a93b0b703b1641e993e3c8601b243199791eae19db575b5d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FRX282006544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d2cdee087a75d49ba9b7ee3e346fb627ba164c92ce6e2de66c5d31c2576d6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:51Z), 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/FRX872105126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e9a07e5a92ce91a9946be437b87fe3364bd6af362d8ec5a25b83390758478. 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/GBKPL2292784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbe47736e159bf7ea8c2624b1cf3c2d31b522ee37bd0a76efa40c102612e179. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA062283269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fc488c3df45a14cd6334c0072f8ff88e4ada3f927a95779d24d4905bb45e3c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA062283270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d09ef1e022b07877b832d07769cb3913946301aad648ded1c5ef6bc67691bd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:02Z), 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/VNA0M1931661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf99b5ceb81197f16fbd8264b4fded7465c938c78c8d1128077e08a7c805e2. 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/VNA0M1931662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48abf410dce73d76a106c90bf123835bef86381f7cd453b648c888f438528464. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM7282457730.