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 0x9d39b3063f608a97d6147dd9c9ca11a7800a1779103e41d287ccf6e6df015b7d. 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/527aea95-e90a-44ee-bd6c-1655969ab992.json and https://artists.proofprofile.net/proofs/artist/527aea95-e90a-44ee-bd6c-1655969ab992.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 0xbc874539c369cb17036ea15c57b5136ad427951816cc735a7fabe475f713482d. 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/DGA072201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c6d546960a44816db66cb11385ea8be1bc120b0f426047930e642a180face. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA072201203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c3d0a74377c83ceb54bba369e8272e2ff8c941ee4151e0015cb428f047b7b1. 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/FRX452337193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ff08ce4c211fe7024270aa977fcb8a427adeee0cc114bcd7e4613f474fd7e. 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/DGA062487183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869115a23edb7ad32a3bc85f8c8a1fd1e94ffb6d6f3da626df0071643b11d244. 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/DGA0Q2431447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c047a0c414d84f4e6dbb8073d1df5f44baeb30c398972ffe9ac36f4a41990f4. 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/DGA0R2487074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7fdc1f8911ad4752aec1ca7c43489ec31b697f5d992be33d03e22d308df5b8. 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/DGA0R2487075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17bec261f8f7c63b37d394a3df63d159275d26d3fb0e9e6ac7d80f3a45c8a3b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR59R2584780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a390f3b019cb3f57c7a714829aa631507489ac67be1c48ba2a772d228eaf54. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR59R2584781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce46ae1501814b1a1b5694adef56073d83d824348d114f117b332abe798ab119. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:16:10Z), 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/FR96X2572607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9293a50fb2134857e178605c777141d79e99c510b361f3c5889af24d3df53707. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:28Z), 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/FRX202539237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fc06e309814c4cfdfa7240d97f1b8026a84750504d88c5ed1eef0255cff92c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:03Z), 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/FRX202539239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96f8c8df770fceeaf12cd5f49109804837207d69a69710d3d63cb0de4ec42d4. 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/FRX282528530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a3b6859b66c1c7fce3b56239663741eceea1fcedac4b66875fdee9d4b0c071. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:50Z), 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/FRX282528531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76392dc4c42a3ab157fe85317b3c3ec598ea76c076b80822e5fea099e0d8569e. 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/FRX452508822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9aa1269cec4041f5d98468c7c69a669fc8dcd7daf4d8357f39a706bbad86e7. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:36Z), 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/FRX452508823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1095eaeba0af199e3c90dc9e6f546792aa5f78c74f958a4de96330d7577818. 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/FRX452536586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458164e7717f34ccacf7b813958614dacee7f66114cec30c57221292ccd8ea43. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:43:22Z), 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/FRX762504678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd471d2bb6a2d543921de6f0c71dc25abdf4566ad523dba9c5eec413b954d6e. 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/FRX872524045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b66efce3d9979789cea85784429aa2011dfa7c412ed72734a13482bf1ca208. 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/DGA052567195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cb3da242c08e25ea32146e4e476e3e6dbb8979c949107a35dc03785006b26e. 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/DGA052567196.