1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf85b900d18e874c907936607a66ba1e77864ae127afc2bbb12a121dd98ab7684. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc1d4cee-577a-4b93-a72b-c47bfe993bd7.json and https://artists.proofprofile.net/proofs/artist/dc1d4cee-577a-4b93-a72b-c47bfe993bd7.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 → block OTSBitcoinBlock must exist at that height 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 0x8406c5fd9012de2b53719603a54f8f14e06c14466c46ab98f40666616c3aae49. 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/NOCVC2044010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df8a01c4ce3df786175267efa8a8f0279b8f1f77b58e30cfd06d45048366b0. 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/NOCVC2044020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f73433d1ab2708ad5832d90cc9f1187bfad2a74dbc4501bb3af983bdc6510. 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/NOCVC2044030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc73ac2aee1cf3233cb30f664fc683dc19928dc235f9e60d1681a5771f526d5. 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/NOCVC2044040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2541969feedd66ae0d701fa0a7e29ac8b2025d875c7fa510aa3a28bae41c08. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOCVC2044050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7de08127cba7efff7c1fe4c9ea21773f7bf9efc46e997ff8634297ebc46d5. 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/NOCVC2044060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873d87021cd165065a51559ba1e4109db1664c9292d23a01f7558e72154e985. 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/NOCVC2044070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf665012234a626cce66bb47bc02c5a04d04010ca936a8fa06331766c4e24b59. 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/NODU71744040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0725ba6d43b9bbbd50c7cdd9ef6a23d9151fd03e3bbeb37adeee9155d5da8e6. 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/NODU71744080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219d2abd02927abe66f35781f1b8abbd7f38e81c88877436785668d7b020a475. 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/NODU71744090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bf2eb9d511bb5231f3389776254421975ce13cb2b88454c1dbb5fe32bcd4ab. 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/NODU71744110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dd84d4e50defa4152b6336cb0c5dc042f9c15f80bfe8daea18f7846df86fe7. 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/NOCVC1154011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c970577fea9c2a78cb62628827692d43eb079c702c8549e340ef1fad738524c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOCVC1154021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b77793d02901db7da94332f7b8884bd813e5f901793eb5ed1db9e8844c6290f. 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/NOCVC1154031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f04158181cdf69483a64e12c613d67ba4ed6f1036e4c006222c9bb5aea4ef1. 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/NOCVC1154041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5d5c9080b49399697819e0522602e08b55687d4ae91c0d706e59f18f23f22. 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/NOCVC1154061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d059ba0a544d7dfe16b50cc1e74a7fd832b1d75f9510b863bb464c6ca554e60. 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/NOCVC1154071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ae34f756248188143ad4ed9390639516b35d6cfdddb33b9d2e6e6dadf78a0. 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/NOCVC1154081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddab7ba816a8257158e17bed4f699297ff62e55a127dfc7ee12fda37db745a4. 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/USI4R1126416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678b39d5145bbe577d7549b807e701d868ec3c9b3cbbbc1b472b8c2c7a9feba1. 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/USI4R1126417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb700d534622a8f9d2b7a6119da88831ba658941a91aa50ee5529bc8a37fb4389. 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/USI4R1126419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6caa24cf2e7bfa92ed9da23d272d3a3a45131a9b15ae874894fb3809b152e0. 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/USI4R1126424.