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 0x3db11ce39e770b9459d771a39332c0836b7f88240b3c58454342e90e967bc0b9. 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/07e3e821-d819-4210-96aa-8b486c1fccf7.json and https://artists.proofprofile.net/proofs/artist/07e3e821-d819-4210-96aa-8b486c1fccf7.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 0x1c7dc4069ecbe886407b7f71a4aad7eef7d931138d4233b7836b5ee02c77a04f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFY2134343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8deb58a049dcf8c218959d11381aea612dadb0a1f51f36815047ce973f27a6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGB2242255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45cf4cfafe7c25adb6fd475f37b0b03929a6477aaf72dd3eebb5f47634e5031. 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/TCAGF2207698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7b601073fbaf3eb893321a39e9e36857dd7d9ade24ae8e5bf6078c11965900. 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/TCAGQ2220402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4609e29409cad753ca66a0b379bd424c7bd6064afe8ac1cfe0e252ef16e8a. 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/TCAGQ2220404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053bd3a7bec657278a454a7957d6f4fb496c660f85163cd9e9cb5b9675c7d569. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:27Z), 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/TCAHN2365516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e70eed046efd385a73f39334cf2f4986a66f77dd747c84db3cff86a34dcd510. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHP2380367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bad23ca88f780833664c98f05af37b94fb1339d970b2017e359b0e0c96103a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:56Z), 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/TCAIC2451588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0e5fba6b1f63c15c67f8ff4af44b789fb973a6e95bccaeb1d8f595a7a3cf67. 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/TCAIP2403556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccad8e760a620291941ba18e20e9f8d57103910b7767a3333cf64d82f3fb54e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAIV2497112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38bd9aabf48887bf72763367bff2deb6ef8c5f793a15a7534fd687fd80480b4. 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/TCAIU2497118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef451863a2b4b2258eb6d78c0e355c69b3515d2841c78fc177bdf20b88ddfaf. 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/TCAIV2497130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c0f3b666f706edd6ef5a2a84652336c0d16fa46d3123adda872f712b75a800. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIV2497153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa465a425a265c55568fb7975f0def9b8ce38daf42f5628828f17531de60a7efe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIU2497160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4ccb47cddc08d8694aa2859c45ce5ff52987d7fe28088a615415bf343674a9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAIU2497173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e1485392d5fce3e6c362ade32409cca539b662f3f38a2d27a5e6e027d48857. 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/TCAIU2497191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3a26f39769886ae4d9cc5034f27f4b54e9fb45ae4302dc969ab87a9f9724f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:42Z), 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/TCAJF2567045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f55f04b57a8246b5cb7171b465fe4668c70989e57f0a73adb4ef19b9f0b109. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAJT2570788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4d9146fb7402846d7f7381a17e7616b2eb9091863e76b156c4ec78adf153a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJV2598595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d25b716695b7d3da5587e780d3d136f7c82236fe6b278d597d68d5941e96b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:10Z), 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/TCAJZ2593001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d28e14a673e0a9949c693a4b7a0d8c77be61b4d8441ac07a6985e42f82b395. 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/QT65Y2555028.