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 0x0c7d8b8017bc2ba4647b64c363fd98434135c0b4a4664cd34be35d3da3fd7b80. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9063bbc-2306-4c37-a3f5-ccef92869efe.json and https://artists.proofprofile.net/proofs/artist/b9063bbc-2306-4c37-a3f5-ccef92869efe.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 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10335259c634cd9eccbcb85201284a654ff4b97e8f112ea69a0c3c9a6e499f. 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/LVA100800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a941831ea8c994f75e88ea4d3cb35cb6a6ccc4f0d2d332fbf082420c743ac2. 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/LVA101300697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f1b097a38e9c44aca6585d45da5f20705e9de62d002919101fca6a4eaa535. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM7281496550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc298d77029a149dda51c4a147514f6ecb4b91f2ad02e9aec400915ad1604e3e4. 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/LVA100400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20726a550ddbdfa1ea0b5a41c0080b9bfd5cd820c486987104410c4879738403. 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/LVC100500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ff3f5623971937345b96896d3fe96317d0af9aae6df449ac683be05b065553. 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/QM7281496553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2addddb0530df127dda5bf5b116e79a1a04b888681ebb65d5f7c53c5ab0a03. 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/LVA100200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adeeb22d87ce63cb42613b3045191dfff956b520c62f32995d97929dc42a85b. 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/QM7281496555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d76e78a0859e694fb50d22e656bd73396455d7393370bdb8c654ab30d2c7d06. 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/LVA109600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a3ccefe77d9386f282b7e2386e5c4035c608977b619e828af8d80d9b2c514. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM7281496551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c77307c74406f8d03192945199844a1fedb683506c73a21bf3fcf9b2983f127. 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/QM6P41403840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffdc27333412a8b40071f55de132e1a6ee46433c549125307761cab84e50273. 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/QM6P41403842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d9c30df19ab1c18b18ac2adf0df960bf379569d94b37fa819fb90a21264e7. 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/QM6P41403847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac5d4576da21eea1b0b0146e69ea1873e68400fab4e1212bcdc706371fa6d99. 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/QM6P41403849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0056a7b26874ef3856b9a952385568f73ad4bfcf6b9189749bbc8ba5dc9d134. 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/LVA109600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e33ff58ec1b031090561fbd62fc37470ebef348fdceee8ffbe7cb0375e1fcf3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:51:37Z), 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/QMFMF1532528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b6faa39ac8d282ca32d6873e89ddf92dd343210ed574cd29b1229112b37d01. 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/QMFMF1532531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c399c389c45e7d219dfecb3f83a0b715bca3e8aeb559c21336f75cb82a8dd0. 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/QMFMF1532542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928e16e597a494e019f9a83e4c9a8fc245174a6709bfef4505ddc553e65c6fd. 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/LVA100100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb3134c86189cc77f2859551abdc8663d9db27489f25336e4d48669ae982b1f. 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/LVA100100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2956ae6fb3d9858cb395b07e28cc945f553ded505f2c9fa83d39fbafaf9e5e85. 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/LVA100100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a46a8eedad472510497f987a490892947a27944226b89bb7967d0350719ba5. 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/LVA100100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea62672ae38bb365820c68f709e65176aa6e02bb771560f06d06635593a87e. 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/LVA100100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aaaa502c7f9f1a5848457c12640f10e6e73829a0c78f0b10206e0ecaf555fd. 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/LVA100100207.