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 0x28ee2442577fa48fcd8ee3823862b7bc5639d992afd7b18239dd89ec1dd2ef6a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1810de3-9e50-4b67-9104-80a040e70401.json and https://artists.proofprofile.net/proofs/artist/d1810de3-9e50-4b67-9104-80a040e70401.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 0x9866fd0804e0e77867f0287582aff7695e002f9bd17a286bf48946121a02b1c3. 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/QZTB92409627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0450e828cd493e70a504badb667f3d93bcad8b1ac1d34d44b0f95d0c5446e2cb. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZTB92409629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd586b5de2fe1d65d4e45f0151f6873b48a84d8d49811aa29032743776b98c168. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZTB92409630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7ef2896e1f51c270c1c093e138deb77d39e8e68c28d7b19951a5cf70dd4bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:11:16Z), 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/QZTB92409632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893eb1f6be8245971a1cd4a443f3d020cd7f23671f03aac652f9468dfff625b. 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/QZRP42483104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ac4a45cbf75631f683626cd74b3e6fbe8f048432779f0eddbed58d94fe86d1. 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/QZRP42483105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475bcc77474fe4d40db8d0bb43ba92f3748dc3a7ce32176b3e6d79ae290fffe. 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/QZRP42483106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f26f13a21acf5387f8dae72d6afb9decc65fbb5fb93f8b6fc956cc7d978642. 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/QZRP42483108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7882dc406d06e0353e9b19428188997bb08b84b567502398e04a3dc3947d1034. 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/QZNWY2449028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7546169a643e124719bd2c6de62c481946ecfe2786f42a9607f1a33fd650a. 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/QZNWY2449029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d903554ad52d6d28f75d190f4ea536391ebaba03cfde4e1a39fea0f7bd85e. 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/QZNWY2449031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c3a34c3865eb80ee99ed29399bfbb6153f9ad6578cc07150c6d5e446e0764b. 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/QZNWY2449032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c36985bc2556b9ce5d777c40becd61764bb45f31e947ff01180e1ccc7505c. 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/QZSR42169969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a644d2a508133e6b3f79c3f8c7b6ae2dcf80bb72d116027a4844400586cbf2c. 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/QZSR42169970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0143cf4dd3ed73bb0bfb3b531f78ebb0a64adf32789a8c4019faf0a9829bcfe. 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/QZSR42169971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450dbe05d4231024498e15f3d310d61ce735339f178700e459fa5bc71181d9e7. 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/QZSR42169972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea728b1a2831753501042e570e97224c2f16a22e5860484092b67b9fe2020a64. 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/QZSR42169973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ac4a45cbf75631f683626cd74b3e6fbe8f048432779f0eddbed58d94fe86d1. 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/QZRP42483105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893eb1f6be8245971a1cd4a443f3d020cd7f23671f03aac652f9468dfff625b. 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/QZRP42483104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f26f13a21acf5387f8dae72d6afb9decc65fbb5fb93f8b6fc956cc7d978642. 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/QZRP42483108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680fd7858ec0fa5cf4e8062e99c41a7ae4a813fe3704b823e93aabd73d0d02c5. 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/QZNWY2449022.