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 0xf3a8c25f94636dcb1cb25e1729b5a1e1da13a5419aa52f358ce4f33258cde3f2. 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/80ae7bdf-76dc-45e1-a05c-110145f4be6e.json and https://artists.proofprofile.net/proofs/artist/80ae7bdf-76dc-45e1-a05c-110145f4be6e.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 0x914800f5d670da22753b3ab33504fcfe21e5b32d66a937fd5cdd92f47867efe1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEMM41901098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18453a850a85f829c824552881d69a1bf2f1a3d0519cde3efecb13bc305d83. 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/DEMM41901099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910dbe880da2c3909a63c4a6ded14620a91e801512e2c41c936a7d97f902fb54. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMM41901812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f37fa9f0e53191e9f949e8acc3ef9263e52d6fdbb0419e085344a7c8495d3c0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEMM42001239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a31c2b355072306046ab5f6864a7800e046d1b1d717bae58d9b2784531bae80. 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/DEMM42001241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d16cfc2546ae4319ec0906b060796330d6ecc55e7622e83d00453442bb9a62. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:19Z), 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/DEMM42101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b4e7ad32f04b45078ade07118e309c26be364d59bf20c097e7c1ec99e7eb8. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/DEMM42101322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a011317ac564706bdec00fb58fea1ad26d5e08d9b3479763b4811c875da1c93. 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/DEMM42101325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ecff96a29eb4a30fa78773f26f9cd5ceae82d4d92e7974a79525085c9763c. 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/DEMM42101330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc545f4614500d91e9d6b1a648ef851f55fb7ddcbec56863a316ce0ab5aa9f89. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:24Z), 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/DEMM42301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12625755f8082bb2453803d3eb1278d763274947b0826b6f5eca3d8d432b4210. 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/DEMM42301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7622f40c726354e78a1026d0a7b9e8ed1aea69a9468f0dd9b7d3f03526278a27. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEMM42301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cb9ada59fb1a1a8d55880243a098d8d05a097870fdfb7d3a8fa2653e46bb6f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMM42401073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c7dae86a8eacc3afa24239763ceb942f0ab8cf23ec287cc2ca04ebd3673d25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEMM42401075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb65de8ad0fc4d1728f72ccec70275df46a4f1e79b6d49d34519055ffe52deff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX2504326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5bd7b914f37673f05f10804131e3ff8b82aca8b5b5a5eeed3b2e8f93818b3f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42478681.