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 0x5e72381446491edc7e2610e18a4eaec851fb44141f2d73302308f272507ec281. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69d7223f-f5ee-4261-bc66-bc1aada112e2.json and https://artists.proofprofile.net/proofs/artist/69d7223f-f5ee-4261-bc66-bc1aada112e2.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 0x00f2f0a683eafb122d15c6e156810acb54926fdbd80871b2eec33a8b1d501bdb. 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/GBKQU2341181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc56d873976f3ec88bdcc2735a7395508ffa231a91427e5bb54e3bc8b6c21c4. 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/GBKQU2346389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67054d83ee8cfc80c684e60e3a725b4e833af6005287d9ac65fbd1c59b50d15. 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/GBKQU2101819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e38d39a1f5aaf85490934c4cd0db4a24c7d5795579bca720bc5fe367049c8. 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/GBKQU2263246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa168e941e47122e84b52d84470bba28d0b4ac1f89dd96525f267ee5bb8693271. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:45Z), 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/GBKQU2263243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5201b09dd727c738b09fb9c6935fb98ee87ae92970488cf3b014dfe52112771c. 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/GBKQU2047818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad15aeabae3724c8d0849c9003e3db73e7d64dbadf2265b38cc45d90cb5a4a. 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/GBKQU2047819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7df8ed0a72961e9455e6cb0fff3805bd7888a0f35dd7f3555997ae803e2ee21. 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/GBKQU2047822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa710fc2cafd10890bdb5367053fd687e2a67824d624e2cab2c1015f0cd796e01. 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/UKN6K2301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5802b9cbfaf260c53f275bef8d9474fbfed14ec5bbeda9d4740b80a89dd7afe. 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/UKN6K2300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdebb070e93544e257dbe1f9b2463422d29fc3dfb788f43a9118a128b46090a. 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/UKN6K2300806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225fe0b1360e8875941d70aadef12ce87f649ed6613f417c5ce5e55d09a64dec. 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/UKN6K2300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5802b9cbfaf260c53f275bef8d9474fbfed14ec5bbeda9d4740b80a89dd7afe. 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/UKN6K2300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1262a1b773453fdddc80890ca1a754d2d7ba3bed65c05b07098f0ebc5f85aa58. 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/DEU672300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924d5cf288c125a7b3da9acb52cb34f9ca010697ca3baae0855b7f4891aca34f. 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/GBKQU2299377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21845b53021611f7bc100be5eaad2d0dae88eb97142932bab3f7828010fd1d44. 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/GBKQU2299378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd402efffeadc25173ef04744bfe9833c8c086bf7c605db340d12882c10e8883b. 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/GBRYX2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64915f7ab6774b936a87126dbb078006913670dc0091b36f2337b16b6d3c2801. 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/GBRYX2200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2247452e51fe58a3a12acffe138a7eeba295b072d3c871da361d5d95b5e06c. 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/GBRYX2200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd402efffeadc25173ef04744bfe9833c8c086bf7c605db340d12882c10e8883b. 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/GBRYX2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b5be1d2e250330e9350915e1854e50612403e892e88099c293c2b6c0adbcc1. 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/GBKQU2098755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22144644a7cc42aeef6b0a09b6ab481d79b30fe0f39f6a1b8d01645024a8f5. 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/GBRYX2000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d92cb57f79deffd01fb2389eea55179e83751f95429971c9bda35d3ea43c1fe. 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/GBRYX2000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de0ab8b3946191d09c0df2c4f33fbe28055b97936cebbff61700effb70c665. 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/GBKQU2017142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7361798d9fcbfe84a1831d70a582bc13a4e17275a6db6dbc6a15ddd0880004ca. 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/USA2P1942392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d4cfcca20ecbb309377b36fde5625f1c73aa567bfef75c3ba6d480ba8f779e. 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/USA2P1942395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215c16161beedd6c1481f7a6e699e24f1e28f4e6fcab5fe78457012b2a89ac89. 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/USA2P1942394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ac1256d6629c9a11c95e7bdd635420fba3c1b1a14c5930f5bfca2cc2a89be8. 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/USA2P1942393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdd3c6fbb65b2d19b33e962a965b60b7de02ef8f0ab3e1db743e2852e2205ad. 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/USA2P1924859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fc5bcc453e5d237ab49f9ce02f100e047b861285e616390346d88fa9551c23. 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/USA2P1904574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b05a98fd75ac37a3c43ab1f7e366a5e411fb6345b22c33c2a34d742850ff9. 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/UKN6K2400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee85b06b47f80109cf3bfe823fa72bb7c33683676156a35aab15af7d81a9b8d. 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/UKN6K2400973.