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 0x96c1f1f710b31fe07fcf71f2bdaa556bd863985ef50ba5da788e4735ba850568. 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/8bc1382c-e261-4cfa-9b96-70e227cd382b.json and https://artists.proofprofile.net/proofs/artist/8bc1382c-e261-4cfa-9b96-70e227cd382b.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 0xd9fd95e56d03bcbdfcf08e1dcd17390ed021704fb100ab3ce279c11ea79d0e3b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR1PP1000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3839b0f6bf848a5ed6180f97fc6392d0a90419e826f45124e4c6c0dc87f3408. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR1PP1000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c24b47a403e9ae54b5b5b71e843d097b3336ecf8299d97cf1cdc16d99ca1d15. 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/FR1PP1000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d12965a6a46dd1f53961bccfd49418f531ac6180204eaee1e0ab9921d9ec202. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR1PP1101360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd073a58039f69a3922b6941af5bb61de37c4100b7549597bff6b11e3960ebbac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR1PP1101380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13563f7d71dc8bdf732c83945c86c523781ef287cef0ca0e2be63aa0005d00b6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR1PP1101390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828928d63a55564a48cc1cd11d8141f552f75a1cf2a110acfbb7832285f342f. 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/FR1PP1101400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bef2828e94f350e05021201201fdade3a146036f72cd5332d582d91553c4a9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR1PP1300960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60a03e3247a4ef5ce8a2f811e462228d73fe74a3c88f36d464f31f9722d868. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR1PP1301000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f516f8f5869180051350aa3444549a717b128051b96f35b3c57081d1f0cb1c4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US4E41528401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf64d6a3dc998b889ec93ba9858622d1a56dffcbc87a645ca95a9bc7acaa9d1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US4E41528402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e5dc4743a5f3c37aaf6c9a63de8f87df1eba27aabedcad2310796b9a935f04. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:09:21Z), 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/US4E41528410.