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 0xac90efe6727e3713b0606bd401f90cf165295b1b27fd80803843f6e2737a545c. 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/4238f383-09af-4cde-b402-295e8ccf4c02.json and https://artists.proofprofile.net/proofs/artist/4238f383-09af-4cde-b402-295e8ccf4c02.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 0x05aa6485f832d35be706c08b7dd6a91e60457448c746fa2ec8c49554f2554e3d. 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/AUMEV2324219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41080444bf32190c1bd4e6b1040266ba8271aa32347f7f1b02444897952899a. 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/AUMEV2324223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00a10faf3498efdf86bee5693a0c7ed14de46799d39ef514861b0b8b98a252d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUMEV2324225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15649db1cb3da440b8e6f03115cc78cf80adf9ca8eb179f6ce666822b7af257b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/AUMEV2324226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a67996cb6f0a73f2077e456195cfb02de53e043a38992f3001092158dd8757e. 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/AUMEV2324227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075071d3b907ca60f93b0eb0c8af360688a50e02981246d1e647c73a69f84be1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUMEV2369259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf50d01b3601766dc1b024c411e9d88fd80c6cefc1db6918668b418f8c167326. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUMEV2369261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11bd54e786a0d888e1025f9fa09ae99ed8ed8def3294aabe27060c0b742844f. 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/AUMEV2369262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e86e8c4c69c9aa9b22d3d956277a29e507f0a2d44f2d0b15d124cb14bc3e051. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2369263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6281419bf69658aedc78983cfd740e62bc22ed2fde5efa5b709cd6043a122c78. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2369265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe356ea03c0a8d30914a08c9a9bc8552d449138b49bdab61b327da0d56958d3e4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AUMEV2369267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65ec9dad6f07bf0550c04fa649ba7f63c7d867e8f133df7aa0edacd0600c3f2. 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/AUMEV2369268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf8f80b07fe4bd29487d9dcffe4b5e70c5710244ffb432a62275fabe128cf9. 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/AUMEV2369269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588fd5eaff907e1f83e099b44c8e9be5d20fc763dfd00f1e4d7f9470939d252c. 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/AUGBT2353236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105a56e22e1690bf44e0ef4d874da69bdd59914bfa100e25120d703c2680b979. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUGBT2353237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6711b989378a7ad0069490bbee36ebd5990ac9675141c706460b9861b6e493e7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2353239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb2b03ab3f7dfd0f1a237e8fa7508be30d16233b30e0f04e00e1fd70b8ee942. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:22Z), 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/AUGBT2353244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018bfcc6009e19d3555e5719a977b77c40e898882f96eba9fc662c1add567be. 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/AUGBT2353245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2f098251fcd5fe8b199bf876012f2082fd8c4d4fcc90ddbdb01e1ed7bb51dd. 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/AUGBT2353246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1926efdf47235cc014030814c9a65dfc2c7c61b07b8c9a9651084b4a76340c7. 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/AUGBT2492605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a0d2227b5a1e7cb2b17529bce588a7572bd8771eb6d73f7931c8aa63bd92e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2492607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78ff0c318fa1b3b38ca1f387b027e1bb21961a5b14d103f570d06331b43ddc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2492609.