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 0x61624f6222fcbc9d842502017f02df52679a57a38d5d6beb404825e799d5cf54. 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/c6768154-78b8-4275-a0d4-e72d2b4c8604.json and https://artists.proofprofile.net/proofs/artist/c6768154-78b8-4275-a0d4-e72d2b4c8604.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 0x2481838ddcd8ba9cebbdc5922cad19575d8c775b5dcf8bdd6cd7a7135ca8cd8d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USZBY0801054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d59fd080864ebc261cc625c5038f49bef485c8e7a0c649ca20e96f31fa852. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USZBY0801057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a7b0d5a67865cfacc3b95963d14036010ec075568e6c087bd97fabd49aaa78. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USZBY0801061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b40883aff222a408e82519ffc3c51acea8cebdd035257fcd729cadd79faaf3. 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/USZBY0801062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0447d25e56de0bff053c64bf227affa0cc0c4257a7fe330ae62b0e98914adb4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:57Z), 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/USZBY0801063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9199bd53a170eee6a54f76b527bdf2446a41578bd0cb3ea32f0dfee7fbc6ed. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USZBY0811064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6698b6f27de72981335eac6ee2e3ea7d702cd41e9f2f0898871647eb2a6e827a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USZBY0801003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e85cc8b9bfbedd802acb622e7ecb0a5ec1ac03b1b71eb7b0c5a71b6bf3d9d5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:48Z), 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/USZBY0801005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5932ea9bb4dcc2a6f9a0d2f891760dd04476884a6d2238743bd9dc1cfa20ccbd. 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/USZBY0801007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957513d7abe303ea9e4b6cf28695076adfee8063b881659472c7928045d1d539. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:48:21Z), 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/USZBY0801008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6672aa6634cafe635e41fbfdfd9435d32d7ed4ec1ca2c3925f6864755f4c8ca. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:02:57Z), 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/USZBY0801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4166a489ac4e9d333280f9707df37abcd6a6e61578d6469b2789b3ad2bfe50. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:30Z), 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/USZBY0801011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116e5b38e8dc7a01c4cc91f0b295bc846e7a72cef98f188609284fa050767a51. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USZBY0801012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c8f7eb43af0d387081d9792a980d76e63c00f0f0d9798085486615593a7553. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USBAE1490807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d16597363bdc9231ff42ac136cdc90965616b3b287071cdb22485e7490d2cf. 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/USBAE1490808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9264f81aa4af4e0e05693e70a551f90a3b548564200f3379b7ab621983820b6d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USBAE1490809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5909abcff730c7ad95d4da78e30f2a99ad9b125fcb82190633f3eab5eb43ad. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USBAE1490810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eba5faaabde51ca626583bbeebb6188b1d75a28ba5c9385d458c7d4f3937a6b. 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/USBAE1490812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98838ce69cd1c5e021d52b5e71a5b4c7fd3107ab899d7dfba46026d36664989d. 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/USBAE1490815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b4a0f5fb7ee67080b5f1e2bca93027ae8ee855d0ce73beb44a7016ef457fa3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USBAE1490816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8d71bc771a838936042bc1e463eede0427d9c9e673401541adf7aca1a81ff9. 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/USBAE1490817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0872cf2c5f9c225548246a7cf5e2a619a529fde620330a6504d864051362fe5a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USBAE1490822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0712443e29a1c3bae63d7959db19b9f967110d1a168c62062cc7a523af1407b7. 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/USBAE1490830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86a94da85f33369a3d7949896ded4fd570840bfa78ed312c798f6bf1352fef3. 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/USBAE1490831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f5c2b725ec2a45f863f44d7640e5c080f94b727f9f618e587949aec1f6254. 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/USBAE1490833.