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 0xd04a16edfe4554de4832194307d70d7d93072b9a7ebb215e31701c194923b4a9. 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/c79e9b54-2c70-425a-b1c2-e314eaa9e473.json and https://artists.proofprofile.net/proofs/artist/c79e9b54-2c70-425a-b1c2-e314eaa9e473.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 0x69be7d59dbf75ffb87b8f630fea40bd75a0186a9380c0a803d6b32831f95f8b3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGG2297373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881373fa6864fa1c68469a6149ed3bc2ff16a5b86a29d18440c597f647500acb. 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/TCAGG2297412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30121e2e5324a4cb01a0ec6e4831d1c820c1e25cf52a87f95688134ccef0643f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:38:34Z), 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/TCAGG2297425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b86138314db9d882dee6a80efbabf1fb6a31afb270ead1358720f7b0d0fa1cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W12328499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedcf498766c83422fc8ce6032f29e57e72f54e3edcb1ccea7170bdfabf8510f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:22Z), 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/FRPZ92330310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea8a8a86bfff6957dee43c986482781f4570481edde031fc7be047ff4d76cea. 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/FRPZ92410640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523adc14719bbd84a200337939372cc09df06523da99bed893c2173f761e39f. 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/FRPZ92410650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0077975a3e2008291f981c22c3c31e39b74ff950ada7e242f2742c1e43781b88. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:26Z), 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/FRPZ92410750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9def83ece038a18e5a9c2d564230e92a210b5d955fa369017daa2ddb51dbee3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRPZ92410680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f991271df9665d652aa526e12bcefdeebacf746e2610238bea7cbe317665c6c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRPZ92350530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a544eb863cff26d2d5307404b97f02160b46ff872013baa5287e926899e944. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:48:37Z), 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/FRPZ92400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1717d0a96f88df6b0cd4d39accafd219d69621a9ec3f56ac951b55dc134fd2a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FRPZ92421070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8859b53356d9a7c0ed5f42b3c2a8e478f7661418204bc72b022571245cafdc. 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/FRPZ92421090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557989ec6630825cbc90954aeb68de39dcf98145a6477b4c8fb0ca8fd8af8059. 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/FRPZ92421100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675ff1a31651aa346d6c530847dd9b46357d7684f13ea61c9b8b0fd55c08cbf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRPZ92421110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970d1d72199ae4ad2f51d92f522754802a040ab547a9d04d6fee03b26694aa50. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FRPZ92421120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddbb90993aed761c13cd121871f0812b7306f689714a5cb512ce8664622c821. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FRPZ92421130.