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 0x3e39ad9b4fd9cf5354c72cced88c762a73888e5b358ec824542d28f0a347b2ee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49df9ea4-dfb6-48b0-930f-7d6bcd23e539.json and https://artists.proofprofile.net/proofs/artist/49df9ea4-dfb6-48b0-930f-7d6bcd23e539.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 0x9d374b264f825237c0398257c9cc3665395fbab9019b57d32b3da4e25f1c5b54. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM81168410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee1e15e5c5104c783c35185372e277574260d0345c1cb0ba503a662df329fc1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM81168416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a9c3ffe767c1fc336bfc55810059a23077e76bf9cf95dea9b78d02f4164e2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCGH1243459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15518beb02b9aa80430b53c5c80eb7da9aa812596a48fd9e243b50280a9017bf. 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/USCGH1243461.
Mr Chris' Tap Music For Kids The Paradiddle Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106877ab0e4587e77035cada6c3d8435a26f839b6dc5ac98e5ca08c073a35c1. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USHM91360515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c818dfa796ce6ba6d9264cc14cde90a80327890ebf88efab7b4b797cefe4a6f. 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/USHM91360517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8061bcd3e7af12ee992f7c3cf88d629ff15c636a2239fa85a77f18bc97cdc35. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM91360520.
Waving and Gliding Across the Floor Combination
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a59766ef11c6cdc9acd7292d014ee02ab10c3707cf78dfb6eef73367cadca0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM81919988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9b76d1e369e0d2bdac3deeb49bdaf227521bf41780b17587fd402c88d02ec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES52045949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576d0fa546982f833a70b658928c6d5af54ee86f11a60ebc2aa8ee81cdc3cffa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USHM92524673.