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 0xb22a0128b6e9ef6edbf856414fdb3aff0b6f0ed9bb3900054ffb02e9995810af. 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/dc92a350-ab47-4d39-890c-14df739bf8fd.json and https://artists.proofprofile.net/proofs/artist/dc92a350-ab47-4d39-890c-14df739bf8fd.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 0x0c31b2afd00c4e64e51d023eef42c648b099c22128314273caffbfa1d482c6a5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:12Z), 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/DEP182008266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77ad792398434f11f36a9537e9fb7719f55d903a032aaedcfcc13f45ff8f336. 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/CH7812360800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0c658f7546cfcde8f0419ffe2bad90eff11be692cc3188717021d22a8b746b. 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/CH7812346418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f82ce4be045e1319bff94845263ec57dcdcb4826e6b3fa5d9939fe6a5a7390. 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/CH7812414655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b27e2f09297e7c6996157017048e162ddb6199c998b2de11144ce966384a0c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEPI82210984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2580cf6875a9033ac7e37cdc2a5c9953bfd94ea343c680921a56667b0205bd15. 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/DEPI82210985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641cac043366b6821235b90e8e0dfce8f1e2252531cd447ff05001629e2a6f2. 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/DEPI82207979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e038c79c4157a38b2f1e24b5c833fe164caa1a52dd167da7fdcd2a3a7bed5f. 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/DEPI82210986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0322659f8b9e9ee1c463d7809abaf998cc6fc0e95e3ae91d6b250f723cab91. 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/DEPI82210988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed50a373658ed103f411269b58374f128d4d69f1e0a0b448bf19baba1014d4. 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/DEPI82210989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30bc28b837ad672d62c4c448c0b78e0a948b9730b1afd0077095d319b39166b. 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/DEPI82210990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc995a0548d9af143e1147ea33732cbce61ab8b24212c6be9b9203008dde451c. 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/DEPI82210992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21671508b2bea94342682e49275d5b3a0df4db66ce3a2162089c42c0f5ec7d4b. 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/DEPI82210993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b4e78889d1be88c7a4705cd71ccf1a9f0ddc534db66f6d9a8d28b256d712f3. 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/DEPI82210995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd3f3f943b2f8e7ba75fbe905650d2f28f534d3bc60059bff05a23d45576cb3. 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/CH7812198085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6c75432773cf3d1772be88173dcb7b3035b83602a6fa61be1cebe07b32e342. 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/DEPI82016865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200b09c57b8448a568182680313b076fcf1b5d1c9ce4d067c7bf306fdfd0eb68. 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/CH7812225257.