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 0x136ca8e285f94a56144547f9850a4d70e1fb8ab271550e752606c3cb874a4309. 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/003ff512-0589-46fa-9a3c-c8fe3e588fc8.json and https://artists.proofprofile.net/proofs/artist/003ff512-0589-46fa-9a3c-c8fe3e588fc8.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 0x5d2dddfe2b36c0a172bc9910208d02675ad971b6a8b6a001e825cb422f326ec5. 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/USCGH1818528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c3cd44ec15a1020000b01b1f4c767426a1d888e42268756e4daa1455bde03. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USCGH1818531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5bb032d06af1bc7cf70f294ff08824b31987e2b2028aed519615a9c9e7a9c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USCGH1818532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b2d2d603d57711f148bc7d8a0cd9660dccb265bd811f04e35be070a8d2fb3a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:17Z), 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/USCGH1818535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39766bc1c230f9b936f7737bfd5932dbb2d373fa5273854bb50ec9cb49d7c52a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USCGH1818536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11338c9866dccbd8b9f2265a1ccdf816e7871dcd13096936e4893dd7a4f3e5e2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:54Z), 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/UKW3Z2101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5576c1bce5daedcd4c26c06386e14c4898e73c78fa7b8645ca3d79f36a431840. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKW3Z2101550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26b570c35e80bea80695b4ee7c5e3017aac68d4ca01ef38d51196877c143d81. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKW3Z2101545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff74e104b706f69f159e6ec438240295fb58ce5ec2b1e4c5da7191e760f1ed97. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKW3Z2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90421d07224107709d782313001277f5914ef2c0a1a15ec1cd77d2fd509cf841. 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/UKW3Z2101552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42320897730b3850dfb5110feeadba014dae45d56665b19da6f01deace520112. 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/TCAHA2353727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebba0d23954c5ac6947fe7dac67ce722dfb7ff57224a0294f9d4ba86357bc79. 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/QZES72452879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffe5c2eb9cf66d53dc8fa67b42b42641f5d4d14c46b547989ef6b3c00c2a6f3. 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/QZFZ72525946.
Back in the Garage - Los Angeles Fire Relief Compilation, Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da0266f28fff02a53bd9276a8e94eaeaa4a8498862b0213de746a1533f983df. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH2551869.