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 0x8b8a45bac55bd783102537e4eca6fc54e2238f6c7480b4c4ce6b0043b58d7c63. 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/aea7109c-52dc-4f86-b7bd-3ac5731c7270.json and https://artists.proofprofile.net/proofs/artist/aea7109c-52dc-4f86-b7bd-3ac5731c7270.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 0xc023fd6d7efbc88bfae014d90e7f0854740b95114e294747a7473f23c1979136. 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/FR10S2136232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58693c0782607451108ec2cdcd4db629e956c41cde203afc129ec1e81f99657. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S2136233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2cc3616a2fd3511a1c533de86478a27528762773dcb57fc7f7a68b059840cc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR10S2136237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc230f9e0dce700600bb679a33fb0f34df5604a59527256daa923cf0b203e1f4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR10S2136239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb319be66eeb99a750980178e9673c2a6a5928cb4bc1ba34295b92461deee8131. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:53Z), 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/FR10S2136240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cfa011cdfa21e3e78638ab2173f80bdd109a28586623df3fc6628bdebbfc1d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZEQU2203650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4b4cd9a38abd21d56f1df6c9fde7b6ebc3e563035eecd5aff6253b8f67692. 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/QZEQU2203664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29d2613f2fbf33019e491fd269cac049382a1c59105e4849ac3756192d403e4. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZEQU2203665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733bc8620346223eb049a52de8f7a4ac24c3730ffd97959575de6b538fc5987. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZEQU2203666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f621443b3bc348ee4f14e017a778b716aa962e2ce7b2b19479cc85ebb35dcc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:39:45Z), 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/QZEQU2203699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3082563606e1e04fc6420456e79e0a67c1bcf8fcbe01bc2d55a1c496a57e5d48. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:27:22Z), 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/QZEQU2203703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0369a8d5cbe8c49f3fe4b12c2b451ffb3e6b5ee1cab11a85e53531b6dbe4dfff. 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/QZEQU2203630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafba537cc31bcf68525834929d7216ac8185bd69ec8988717aaa7548fba92e3. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZEQU2203632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b8fb07de65b694d76f93dcd1fd05c2fb83e15e74935e100fc31374cc21c05c. 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/QZEQU2203635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32f68f8d55e1fdf00f26efd5b67fe9055df1f2f55e828dd7d7539046b17d30. 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/QZEQU2203636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579313e518bbbcc7c0692436b97f3f1621c0f61df369acc02eb6d220cb8e5e9f. 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/QZEQU2203638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4af70cc8d71ebeca016cecff3bdba11b06a5925fd141e5b084918a72cf50d56. 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/QZEQU2204762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42030429f69723a5023fbca4c0668e682fbd06e442075cf4344f32a4463ace35. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZEQU2204763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf20a907935a108914dbafdc66c0122de768a07114efa714a5fab9e338a11c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZEQU2211857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f222f506e412ced3ca01ebb1f338dc51795002c9295b951dcb7f85dbbab534d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:50Z), 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/QZEQU2211870.