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 0xf76aa9f0696dea11559f1a79c6c0843de977ce5732da3aafb00e3c0d6019c28e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/090c0db4-1470-4800-ba2d-3bbeab757341.json and https://artists.proofprofile.net/proofs/artist/090c0db4-1470-4800-ba2d-3bbeab757341.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 0x61941634193a9b8045d030affbddbd1690eb2729d59e1516e5c0193f097a0759. 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/TCACC1481383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff77647b051469a1b3a1b376697c527500be100472f18ba72a0723ba6730c131. 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/USBAE2206451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323ef9222c9ac93e8899278fc86d26932fa6b1457d777a4399ea836b9594eeb. 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/USBAE2205947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a3d08fe4e7bdfadad374be58752461f08aa12a9329f575e9be688619096a83. 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/USBAE2205951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85474d9e4e2357b9d7037cdf3b24d8658daabec764ea778a9d2d7f532d13612c. 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/USBAE2205362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da87dfa23f9b6f6f153f421ab779da782612c2ef8d410e035d504c59f79c1d7. 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/USBAE2205328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ce641e2368775792dec5f3df7f33a4496f1b0fd6e7c12fb14199c806b1a9d6. 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/USBAE2205329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4878b8fa2eff17837efbc374115e7a7194f7fd2ee507ab736e748f17888ef480. 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/USBAE2205330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b99a68b3b96f2e29d6cf18350a85ad94abc770f16cd36a1429aaf7fb333ff6. 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/USBAE2204981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892870257d72dbb5d7c8bd9a9c843d352fb4de9c45888041a798c50e8b2a60a. 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/USBAE2204985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c0fbe19cb86245962e9e3c7384ba6224f10ff91c2df3eae9f4e00664eb7182. 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/USBAE2204989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8366fb210f8d4ff84b12f7e1690b26e01bbff7122fb09b8b2e9e4507716f986a. 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/USBAE3369126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ecfeb9f2ef65ad86011eac52969c010006a73070dc4198a21a154ba7d9881e. 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/USBAE3369130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2b68f0d814a7c6eb34306d379c1c56ad3a35fac4116212d27abd734cb57ba. 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/USBAE1333940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112176f490cf9582b95265c3b4778c36fdd1013c1714cfb7bb9e07fc9e22611b. 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/USBAE1319530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b763ae24b9e9eb7e328e762ff2cda9b2a00d2f13e2b1e6a4993bc5b6db59df. 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/USBAE1319533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6ad019c03c6b09687e3943717ae12cd67d0973969b5933c3b5a7ab3d79dea6. 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/USBAE1312655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e690d54975b7162eba52574bf1066adb0167850849e2aa9d7d0b343f9daaec. 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/USBAE1312658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb3f97b97310bdad0d7eeeecc141944648fa63a056b06f42029eda0ad5c06f8. 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/TCACD1545340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c11309d562ed9f1f66b4b9bfa903099a6201ad57c050a6b11c8982c11c4b6. 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/TCABZ1426956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4878b8fa2eff17837efbc374115e7a7194f7fd2ee507ab736e748f17888ef480. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBAE2205330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85474d9e4e2357b9d7037cdf3b24d8658daabec764ea778a9d2d7f532d13612c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USBAE2205362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da87dfa23f9b6f6f153f421ab779da782612c2ef8d410e035d504c59f79c1d7. 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/USBAE2205328.