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 0x36ffcbec7de32488fab4c47e5571d9eaab13447b967e80f7b10c0714c02a357b. 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/238cd903-6524-4df1-92c7-9d487e255a8b.json and https://artists.proofprofile.net/proofs/artist/238cd903-6524-4df1-92c7-9d487e255a8b.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 0x989f8088d6b0bb75f5409db9bad9647de7151919b4bde946fb1521b0d10c2042. 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/DEH262316511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d5ce4427d15ab2ac4cd775b8612f08f752cd6fac158d70c9f8198db14b147f. 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/GBGNS1200923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8b622c8391db4d8cb55632655a8d9081caaea715b44722f8e4d836dbbfa591. 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/GBGNS1200924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba922216e8c216f909e66f4471c4d1817b1336f10fa8cc2c33edb87957aa8b4. 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/GBGNS1200925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1969ba44ba9a03b15d9ecb1f3ec17c00f7aee1d775e22efff28810a247cf9e8c. 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/GBGNS1200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c161a99a51af622e3411c08253e79c1e15589f2917178c8c094e5c1ccbb9a1. 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/GBGNS1200927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd0b0933a8c99bcbc3abe94b906371d858aa143cb9db3487648dd276d30f95. 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/GBGNS1200928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eb7b3e18e5e888b4ea578a581b84da20eaeb590dceb9a908b9299ad7aaa613. 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/GBGNS1200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea977f3bdbd9aa5e819d1754b18b6566d4f8270738065ac4eb5e63486d1d143c. 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/GBGNS1200930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1860507f96a66970a49336a9805a19bcb765b2b1351edfec428db027b0893473. 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/GBGNS1200931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2671056c4bbba0c868d417693d74bc128542b2e59df514aae6445bcd4505fcaf. 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/GBGNS1200932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f510739070bb16bcae2d4266678f7e073f317949dbac651e154c7eb9884d914. 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/GBGNS1200933.