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 0x59f10d5397336db0b91647a53f227ed9879514383a3c1b410bd11a94ed6814d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa898e75-b8d6-40c4-b8d2-4d9cd9392d57.json and https://artists.proofprofile.net/proofs/artist/aa898e75-b8d6-40c4-b8d2-4d9cd9392d57.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 0x1d8e5944b2e38410329ae56e441dee1df9fc88d62a9b296633b120beae7a3d0f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZZ52114105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406bf11cf647e248d97a03633e4162a7430fc8a822f737aef5a234ab8f8e6c6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZZ52114106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ae2eebe7f393d53027357ea01e5a99c32e9aadc3c90f5762295f2fd23345d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZZ52114107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c67d188f32afbc643f529325a0738360071e211277e8280a1ee38ef8b3c41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZZ52114108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab1cb1862d96bd1788ac208ea08101c429bf7896e990ad4d54120c4593425c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe1fc20f8bb8d31edcd5be693375344f3dc5f67dd8f915d171add058dd8a7da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZZ52114110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baf47bb2d4a9c73f139b1fb16d6f3a12ba314b722572d3238224c12a1ee7855. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76e4116249b575ab67bba00385b00471a8ce9e708e4c71cb36122eba08e51e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c8ae7d54af44583dc7a98921e068a65d298171be818b9e5a184c8072f2b99b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2a1b0f39c7793c4f70486ef4bee3c465c5c31a81f3aa22afc70488924fe943. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZZ52114114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec462f77a19671aec194df357728b91de2d2971cf75f83de1ffaa4f1a82acb9d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fdaec5c24e7e0d8c8cd0a51fc8335095e9295f9e83570e2ca8d3ac73d499af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67137a3757d3a71e14853b860752dde301877ac1b7535b4e564694710e70810. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZZ52114117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8726ec69121b41d313d32a52e71c08283b860a9a2ef5c6e2eb08fb3cdd8bebc6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZZ52114118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb924b6b9cd7c559b1172f6c4fac0ce98be0edf60a6a5acc9b3fb79aa6554f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZZ52114119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a60898ebf3858963270f961da2f2ef66394b7e95b54fe5469722d1074e905fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZZ52114024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c80d3cc673a5cdb4bae927a99a03a17e2e76373981d8e6a938ded76f1363a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZZ52114025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38fed6d6d9b64c1bc40e5c23aa53dd50cafab315eef2453e1ba7ab2a9460e2b. 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/DEZZ52114026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b018ed8e29039a92c722335d08a7a413728496ccb185bdf9091600fe3b274a. 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/DEZZ52114027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb242cdcfdb200195bcaa73158e30d81ee2a688d87534de5118fd2aa341a45dfb. 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/DEZZ52114028.