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 0x5877eabb38465778a6c8d85308cecd0964824b0e6a23e53ae25b7b6dbcfbd32b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d82e2456-d378-41e7-8518-f120ae5cba6a.json and https://artists.proofprofile.net/proofs/artist/d82e2456-d378-41e7-8518-f120ae5cba6a.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 0x6b3a7c47fcbf06f8c5a18b8aa47072dd49c1441fad89f6f66f57072bf1a90e97. 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/QZK6P2306490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e29c8df6cc7a8e14e13190b5b5f8f557c48d46c58f4311b919bed6c0bd5d6. 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/NZPB12403439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e0bd2a83eb663c47b7fb825b719bf4c8848ad48e01ded70d9e2d17d7c854b8. 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/NZPB12403441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad53cfa3a4d6735c40ac3caaf841f0869a2d164e78acb5cedfd0b9b27aa52ce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NZPB12400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c147c724548b1f21db438c193ee62cfaafc45005b8ea6dfc7eaaf92c2ac0f4e. 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/NZPB12403442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6be864c066a905836c405ea8ee833079ed67b1d837d1444d610145d17ed27e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZPB12403443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e650f3e1256b8bcc91e34afbe2e897bc2818f5169d835e45597ced0a8b80a. 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/NZPB12403444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a0857b6552a6cf2d0572aa0ec9129a62d4161ca1201e0e0c60d64bbbced86. 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/NZPB12403447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc605ff04fd51e7bb07ca884bf8406858ec7399e2fb959c951a40dd8eae5fbb2. 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/NZPB12403448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baceb3f0c5769b688abef47fa6e9f07d8e561fc4ec4e85fbeeff3dcaea6930b. 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/NZPB12403449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd66d468527b882f4cad672890361cf1533a604588d0dba9e50de3402d2429. 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/NZPB12403450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b81d018bdc1720aa38fa212910a4d1937bd90dcb6ad1099277bd6a3fcfa37. 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/NZPB12403451.