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 0x86e86a14817bc8086df4746dafaa0816c8574187efcd58f729fde6aa5878c867. 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/9e68c1af-c95c-4efc-907f-abc0cc07adec.json and https://artists.proofprofile.net/proofs/artist/9e68c1af-c95c-4efc-907f-abc0cc07adec.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 0x9bf1f5bb5a0c666d972f38ea6651081bc4f5e6050253e7b06744920ad361252e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:32Z), 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/JPVI02401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340706375bf575ae299a3b17d0fe55211951fb2b7d9fc47ffdbd03106250bf3f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:58Z), 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/JPVI02401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b024322b5d640003c1e8c37c38f10961fa4238f70d65020edc731ee0b668e. 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/JPVI02302721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c55bc0f9f0bc795c6f987b8c49b3ef1b175ada9f543be44413487100fe59fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02402668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49249e98bcd93a279f106cac05bafc24ef36cbe77930e608a64fbb697bbd0052. 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/JPVI02304691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b055c8bdf0c12a92cbe4564b9c29d453c0a34cd8672b483a0efbf30bcc0ec. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPVI02402673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662f9da1771adcefafff087f6f5e4d11299846066023cf9ec569d6c8b96e41a9. 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/JPVI02402667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74caebe837411b8e75d89d941961a91b8f6d914ba3fe50d37fac809d2f617e00. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI02402671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe576098ac5ea99c511b64d4146c3debc47c80b97be92bd0f0a41b0790d0bf1c1. 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/JPVI02402672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118a449f4e44a7b7bd26ad53dd6f5274ff5b774a31b0d91af22dc90252ae19f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:47Z), 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/JPVI02402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afa270af52f9c74b222195fb47590d1f723f1c477043bc8e807de67a5409970. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPVI02404048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db25edeb1f98afb32fda0742268da0cd4e88fde8e9dab154ff42502e3126ba. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:52Z), 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/JPVI02501189.