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 0xaa1055ac88c5516aa2879d68062fbcc5aa710a07c4d3a247f84c954c9fb845ed. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac66816b-1fd2-4c8f-9183-d8e40ecf0a1f.json and https://artists.proofprofile.net/proofs/artist/ac66816b-1fd2-4c8f-9183-d8e40ecf0a1f.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 0x8522f84c9e7e4106f04631c78ddeb31905fe624a765b2dad76f041ed5b52bde2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWA539225801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb62b34e47c65a0dc140529c3a85d3668ce328b6ecb8c745a6fc76f992ee49e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA539015901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a8d9568ed23a9a8f53fdd5385e547ee6a3128113984543152801454a652af. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWA539012203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35e90eda7c36ec5d86cb1a886d563de20406a372892d34d9f5ed4a17b758d43. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWA459546203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c31e91bf80594d973c757e39c60b17543f9a3577559d8decfed29f631449bf. 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/TWA459546205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841fb90a50ceb5d4b7c2ec69b571a21e5a42b84b209332e87f38a1fa4ae7209e. 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/TWA459546207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef7b47f1dfcb1c67a43c289aa477841812f2b0f644a2bfdb0727d495b3f5a46. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA459546208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6ed630f4ca3b8e8e6ad85a3bcad846f4bb9ba5422af1aa2e9b8090f7de95b4. 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/TWA459546210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a63c8704bc2153963f23767833c5b908d0f3b2c9c4cfbe85a85738c560508a3. 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/TWA459231701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72df8116f0fd36a84da743942ed055266350cd68dc76a0a570b2c50a6cdc875. 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/HKB629400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678d9da76251cd4cfdb2d2a86b27b17b28363a37e7fddb76114ea8bd893aa89. 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/HKB620300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce828f0eb23a070dc0fdf1634a7717af81bd519f10577a69e88ed63aa966678. 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/TWA459440801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f9f27d2b24d8dfde44e4184372ee85e97cce1106051e92dd84f61c48bedef3. 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/HKB629407017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f10aceed366ceffb8bd37a7b8607af86e3cd5f0dfa4f57ddae6b958e21d5b2a. 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/TWB879815023.