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 0xe793137bc963aa75bb03694977ce9dabaecd3119a4890192a2737ea800d7ee74. 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/5064e1e1-5a8d-4a38-8f8d-86ef6adc3880.json and https://artists.proofprofile.net/proofs/artist/5064e1e1-5a8d-4a38-8f8d-86ef6adc3880.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 0x7f58359f08f361c30eca2d949c1bbcde0e9caaa32c505f1c409d9e2bcadb04f5. 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/QMHUY1650183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834a57ac21cf0e05f1b5b8fb349310fb88564b82f2054e34018d21371eb1342. 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/QMHUY1560096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcc0af0173a51800aeef8a1437fdc7835e2399870ad1211b3e8975f1a97f318. 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/QMHUY1650188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf508d8d82f5b4d6d83f31140be97ec10658c3c116a4e1e63ff8a58371c5f2cb0. 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/QMHUY1560847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63d33c81ce47fb45f818babaf5f0650e6dbad74109a79dcdd3be2560655d3e. 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/QMFME2178325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d3372385e0832404200882d73600c9ee7af1817a0bb5ee983be4c74fdbf36. 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/QMBZ92039059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9975f8a1d64fe51d94a5d0d3d85203540c74f17603577d7d51f0a7b9e19ac6. 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/QM4TX2089694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7f97a2e14d516e2040888e288290d1ea9f50df3f3aa8e37ef245edb147376e. 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/QM4TX2092195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4a797d804e8a05defe6c527c7b765353c5e81b276a619d04b4c7b592f7351. 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/QM4TX2065945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23ff4265fedd44ba91b8d180767b1b90cd7b7dd5f2357fb3afb9871d8f8ae09. 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/QM7281987190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15b2b38a3760b6c79c6a5628f2dca82b9cb910ee23d06bb1b3db647904d92a0. 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/QM4TX2092174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037570734ac0145a39e0224f08e0bc85a278a942ba6c25a9e7a51a5bc1457d17. 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/QM7281833508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ccb8687516c6d8ee142e8b5cec266fcb2d34ff5a3a0200e762ef0004ad8645. 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/QM9WM1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62fa652d60d28f9c6d7e23c0f0a985d8e0e434e51f2269542e237a863ee42f5. 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/QM4TX2092169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50421d3576888c6ad770003a79f85b0042e486386b15c442e9def4fcb1160b0. 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/QM9WM1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6dae67f7f984ffac0cafeda10859bf7a5d66c6627217440cf090a97fad2bd3. 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/QZ7R41750696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f58359f08f361c30eca2d949c1bbcde0e9caaa32c505f1c409d9e2bcadb04f5. 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/QMHUY1650183.