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 0x3ffed5586ee582478bb4e56e6b04ed9950f9391929e1295d5846fdd458b55624. 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/77a3c3f2-0714-4b38-b3d2-c96d74662c17.json and https://artists.proofprofile.net/proofs/artist/77a3c3f2-0714-4b38-b3d2-c96d74662c17.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 0x20f3a4175d927551ae3b11f347cce14d8d500bcc2e322bff0a640433ad9273ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:53:51Z), 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/US3U82100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02cb64a0c91ee3eead3798127106ff0f634c5607388331c6f82165c93683254. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/US3U82100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06d04ac378d7ad64a997b345b3fb21a32b38d7a07c5edf467dc62f89ac7cd1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US3U82100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2208534e078e8b34d7fc07249bb928b470da1d8a5981d7d340793efba2b78a. 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/US3U82100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667d5e17fafea3b41e14fed96b9ec5e7a4a1d3b0a9869808b6e9240b410fd53. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US3U82200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cde13af1f66097cad1a1ff842c89548ce9094a8f6f7f27e99a824cce400366b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:36Z), 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/US3U82200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76a232f7a3f0825de27276fbfc38fd731edaa57b6db2f634919745f7c5d8640. 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/US3U82200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc661e1357ef118bada06e0e6717e7cc0e66a3e1c2059f40e0bc062397869e4d6. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/US3U82200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7935420e4853340ccb25627d4c00a0990e7bdd52fec65ce56129e877a5ad0c8c. 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/US3U82400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000595b90bc6b0788ca841af7cc17679e29dfe45e10cb10e9436a36a822f742. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:55Z), 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/US3U82400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce67463be28d2bf36deebcb13db2da8be7ba360e8c3ac5b02ce8045dc19d88f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:47Z), 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/US3U82400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce67463be28d2bf36deebcb13db2da8be7ba360e8c3ac5b02ce8045dc19d88f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US3U82400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61578213b4540e7f0c0ed14ed773556acf32875d71db3be132a61b7bb5fcc1eb. 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/US3U82400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31558b54847e12db8b2c874e77015f2572bd210ece5ece547ec5ebb52ae8c685. 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/US3U82400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bf416bf78090b149a2bc6d4b58661c3ea05ac7ef0f4490da693cd22a6a5b1a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3U82400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14566c9b2b35e29d9ed2d912abf4194f8e3cb52bfd5e79bc055021d9e079006. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US3U82400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8225c3bce4874de85dae6e3c49b30066293a2bb9bea2a7348c4c13501be66003. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US3U82400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecdb14fc00ad6d312474492ce6c37aaeed2e6022cb45dc9df2c996869d2d600. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US3U82400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e579260288467bdfcd3907bc3b6b3667d21dad06b9e30fac39a51fc0d09dd2. 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/US3U82400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a614be2abac1a691f56e8272d8986fb31da0968b7abc4a2ffb6b11d284016e3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3U82500149.