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 0x8ef5f507414cc0fe059229b4b0fb5e1f4a364800da72bdcdaf5a2fc0d88c3edb. 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/e5d93983-86c2-44ab-9cf0-021500b1410c.json and https://artists.proofprofile.net/proofs/artist/e5d93983-86c2-44ab-9cf0-021500b1410c.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 0x964210a7116a2d90e5ba9223f92837c9273106f762b0a730b2216c287b6b58cc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AEA0Q1817959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b8403de5f82f978d832d0175ccd7125cbacc6ebb41a16fdd94af461ff6f4cc. 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/AEA0Q1817923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8c2b433f53d1878b748bee4741f49b5e2160c322cc0a667e02b3f0e02f5dfb. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/TCADE1700824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137b37a5ee99b30f64c233918e8f302aef42d2f6bf805a4031ca77d6d3bc6f1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AEA0D1864841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ef4d7f4ef0df96281b38b1c15e24ce81b6605ac6fd38e921cdf27b2a4670e3. 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/AEA0Q1817771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16dee40ebf5b727d99bfa8dabf17508e28ddd40adb76be056aded6d9cd615fc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:35:32Z), 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/UADZ32050001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002743f67a1e5164d50bc56555c00f61322612eb7969d052d7b9e10d61e53912. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UADZ32050002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682d073051d34bf6c006324383cd780afcacbbdcbe676664c0469b5654ccd4c1. 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/UAMB12202004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d96b7021a3c159121fa694da0a1b3bbb750214fb4906bda73f3383fed09aa2c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/UAMB12202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c002f83db97629ce25eb373c3dc32257a6d7e690f3e02ca62a5160027b15ec0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:05:06Z), 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/UADZ32250003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8524d9a7ba4887c2dedd048147eb39e45fe5802d47e06b96b7351b462270bfe6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UAMB12302002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c4eae5c728c71268e04d34a499615e1eba6ded012d9df445a068807d286909. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0S2459531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0076153b13d5c37f3ac2c911fdcc493ca2f98b8f9f5aaaca9271637839a3c3c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX282534474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e378af3c57119fb967f20cc13b9e80adab47f1f44e6972d6e9cf87706f316. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA052515669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7d2f21a23ead475f7cc97035655f4ebe5a1a7d7575e57f19b444bd93f08a60. 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/DGA052515670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5f0273e92705cc8e5fa98d6ad8e35af1642cbca6fe242b7e2bc0c92fbe6c1e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA052515671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c66fc538d8e814fe9d9c0c73f7f9334bb40fe88566a72f2067e3bbe3176cc1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052515672.