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 0xdd0cb095d2bcb536389072646024b52aa482e1ad33ceb78a25a1108c6457cdbe. 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/164c89ae-e11c-4e87-b83b-a271a5b38799.json and https://artists.proofprofile.net/proofs/artist/164c89ae-e11c-4e87-b83b-a271a5b38799.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 0xe878a54b50fe23b7766cd774bf1e6bf64b7365ce306ffbd6a268fb071ebadbb9. 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/SEBAA0900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a33ed22259d30331067a0a5af079e576d092a213650dbce54cd760735486bf6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEBAA1000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68abb8f52fb25378f7e7e7938fa46bc4933ffe6ed9e53aae2d030a064a21dba1. 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/SEBAA1000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e1c58dabad46879606ef93c957c5dc140afcd4041715388bbf476e81494ef1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEBAA1000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058bb5374eaf3ac4d0ecdf33486990a9b305843a1b3770b619f2448567af0535. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEBAA1000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3af5d66a9dfd71faed303d0251e3612a44aaae5f0ebf16deedd011893f843f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SELEI1500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb337b50ee42288701652fe911daf769c33bfe168694a788ce00b38c5f45a3861. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SELEI1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3af5d66a9dfd71faed303d0251e3612a44aaae5f0ebf16deedd011893f843f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SELEI1500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86ffce84bc73dd3acc99d1402f026f90f278d0eb948ea8def33d524715b4630. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SELEI1500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91c490ae8112dba3a77c49aae2a484d755a270ef762f8605574a4abcfb43b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SELEI1500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1d10fb40a91e3cc9cb5cb425ab58f07ca3ef6f0249365d8753fa1a205a1a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SELEI1500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40323475d96d9ca3180ec2d7e2e67869e7af96ed5887ae311c0d960b8393c755. 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/SELEI1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9ec98f81300b9c541bd5c35e1970baae3425b8871aa7db37a431ba944d43f1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SELEI1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584073ff742a3333b56c525b8dcc8e9c976d52d095e9f6421e286e31cf3dfad5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SELEI1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7333273f8a566a2b6b645e71e1d61e35c7c270c71405983f9f917bc22600a1eb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:51:06Z), 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/SELEI1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf9476b6e1e731677c342d16b8a5066feefcb4b65b15f1b21c7e6d853eadda. 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/SELEI1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c89d5d6906cc1e12fe0b1b63111076c0309bb7dcb3079861db7fadc8c9c379. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/SELEI1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78dcd7b5ce3cd560a91fde05d1d6a38df4c28747fb74c2bce142cd3f8fe1d60. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/SELEI1900112.