1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2d254560c10c2f42fa98202f59370c610d4a156c8ceafe83875f945b28355959. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1131fe6-6f35-4843-8ac1-26f879edeb33.json and https://artists.proofprofile.net/proofs/artist/b1131fe6-6f35-4843-8ac1-26f879edeb33.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 → block OTSBitcoinBlock must exist at that height 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 0x4e257ec7cd0eddf488e860dc6eac730d7aec5eca1806b83d91dfe3a611f87d69. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CAENV2490254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67629ec1f31de48b4daef948f1e6fb1549cee33b9a7a9a83db507da0ee19294. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAENV2490245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9058f14496cb2fc6298b8da95b3c2288c439f3cfa19c87e95fb3a154e3b82c84. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CAENV2490247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b5ca35e492f4b3f6480626ba931431914dcfccfadea87647d3649abca56e5c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAENV2490249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca8ada24a27e8006efe03d6a3a02fb9f65fd5694a530a42e43fffd0f61b52d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTVM2284771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf260b44537c4cad038f11dcf034f70b13448588b8f1acf2fcd6b215eb02a4a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZTVM2284776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9dd452c9ac8a8d5852065ee8c561a32c3ce5ae20a8f904ef371b39ed183fa2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTVM2284778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ade03429842b477bc15ce4a26b0765212666eabf69bd108d57d1548e47e5cec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2248051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a7e036d3e43f2849ff754f9f53ae2e988b2e3457065958bea4a73922b5fce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2248055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f63eddb2b3f957ef5bae13c4879fdb0fc3bec24bbc582864dd60bb81995e912. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJX2381865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64721d02d55a23e0feea0e8c25d971e6a2ea4c7b32982b6efec1e7f14747b7c4. 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/QZNJX2381866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835a7e61545aff457699ed1f4865d0cde51250edf38bf594379bb4b438ea106a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJX2381867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ecb905a7a9f1d4f262739001d590afadc2f94cb6913896db5996266edd31d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2381868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21622ef934536fc40d9a62abe1a3ae790b109fb2e0945eb7ae317cddf78d39c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNJX2381869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f74418001abb23a95dbaa73f847aaca46b44a3e7122fa28e2e1a859e1d5175. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMZ92156624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb8f717d351b5692f20963f4fa0be386659e62bbf604412531b6b4bd98d26e0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXIV82400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ef58b3e238676b6d6d2c7bd5d1c77c8780d4e2b264696d99227fae8bc51500. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXIV82400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c21dd02ce0e9d3c01618fcb3af4b927a42493c8b8a32cbcedc62c652bb35e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTPX2296949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3963f426093a6e757f3d28ec6198abaae9f6ac30a80b3036928997d829005c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXIV82336638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe665fdf70a8084303ed7f2823a1ac499ca38ca8e845e15404a3e7db414b20f4e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXIV82425107.