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 0x4ddb81dbae5c5b0a25354c23f9a485daf67e23d0d1914cb99bba0ef7a3de4092. 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/04b57896-942f-494d-bf08-328a80b0b234.json and https://artists.proofprofile.net/proofs/artist/04b57896-942f-494d-bf08-328a80b0b234.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 0x87063085545003593cf1f0fef0fc3b88d6e13fe51bb151eafb26ea20565fbfac. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCADF1771904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf83d704242fc69f90c79b74fdad67e899fbc5cefc575f39b329fd8dac66e80. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCADF1771909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c18e03573f89c6daf4375d611a256401eb67a0cb65680c42628fe3aba745430. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCADF1771914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72f12102b674e519fce3a21ec4ecdcd4b7d7cf4580e3c5f1199aad4770b74f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCADT1822855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb2a93c794b7eafe8248562fdb225f1954a6fbfdc3400d49fc71def892f8bb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCADU1808378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11102f8a31cb6e63097ad5272a3fa511b515568bbd084a9ae6c3eb53888314d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CIUM72000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805eab5f6d39c0ceda11336348c927e31186a58c0fd263c4995a5fb7e4c40108. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CIUM72000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbc15b6c1945f6832adaa0faf98cd5e7f08f79894cf93872d57404ef3289539. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CIUM72000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78225872e93ec940c8b92da78f502d725d499d6502edfeffd42fd5ff849b4fc9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CIUM72000354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485676fb683c4a8c118d5a90ad992a0137616ecd70b2398c411133fa6b3f4671. 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/CIUM72000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fb280b9fd107d44968e78c24cb6c2d404773509dd43039b1fa77378ca42b86. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/CIUM72000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584dbd582590e025e33d7fc5bf78b5b2f8ee1ecd917ef7953956f31771296887. 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/CIUM72000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1677ebe0703cdb9175a32fdcc783936e6f65df5f97eb646973eaa70ca84f225b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:16Z), 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/CIUM72000357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd1212042ac04b68ada3998aa2142f8ac6a98174241e69a62cab4cd8b70e8d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFN2103047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa06e33499f6e70025bad0444e5599c4935499f09bac7c7ec6aba6d8ffc8e6e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX282358318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d5f75e21e3182dc6064f9238917c63cc36eaf7a8b159a431f1edeb3188477. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX282371966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5d3b30cf371d81af8da0691b5b57f4c03d5242fb4ff3d1a8c1526d7208fc34. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRX282371968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eb1dc0fbca64adc1ffce1372a7349bca6283af0ae27a0d790748a53eb458c8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMFMF2462653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d958b4311c70802fceba18fe9bc3984d875424e4f0c3101bb6110ea1c0c7245. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QMFMF2462657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa6a47fd4ac3cb801fcb6985db00d16201a3626b5d51a373be5768da9d2a80. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMFMF2462660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96456d6ec5a21564fedadcc4c5985fa6827e50773ea4267e5f98efc16e3a236c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMFMF2462651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64cde08005773d9d4fa2b3581eeb2a9a3a9c5f1f0f66aa83f8ba124a2a15627. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2462642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e0fc2bf977a01dd59a06fa5866c5a78747a39f2f0ef261644a3f60484f596. 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/UKXN22511002.