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 0x2c2a5b702487c6ed343af2e1cd6011606b22c6369acf487a93b61162632c9ce3. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bf51dbe-d9d8-4111-9127-90b1b8bdd18f.json and https://artists.proofprofile.net/proofs/artist/7bf51dbe-d9d8-4111-9127-90b1b8bdd18f.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 0x41ea307747e2f13899204a7b14fb872582247ae4d17d8522adb9e8b7049f9db7. 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/HKC371642930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1484423dd34e2979762c82051603fd7b308d26c5195ff94838d4b677000681. 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/DGA092327202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9983636cb6e240a33cac94b3384677822e766251d80f0e939dad57e133bc0df4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKC371642932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc7d3fca43e05bc5bb91101a1a63fda8f639d8d7da860b76168587130c29b3. 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/HKC371642933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5993c17d6ed73244537bb9e9afc7115a0bdfbedd5303c55adfda7c981eda784e. 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/HKC371642934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedec294f80d046fee3f32d50c9fe0973ac6290ca356147aa9801187054aa132. 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/HKC371632025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa099fc9513cef649ab4b6c5d7a37e2cd97d9c8b5ba681eaa6b2a3a50b8ebe2c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKC371642935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb898acb0c8813ba9cf9ebd7e4d720ae53e83a0fddf0a858c9650d61063a6f520. 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/HKC371642936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3361c9bc1bdef7ecf82c36a0cb9c174f7c2be7ee15146f7af27201686b4090. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKC371642937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8b9a832c30904e053ebb2d010ec4eb842b8b50e0f60a43e0ad6952964fb52f. 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/HKC371642938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a72b5b1fb92f7240ca1691b087619d0fa6c458e9b4de59567e037713db078. 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/HKC371642939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681a9131e77cce431d56cedbc2a779798805a7d864fce614f212905e6ec85852. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKC371642940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7c2110b08f85a423d99b7e83b528710a71162501cec4a28014ba3b6692b5e. 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/DGA092308741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a52b4b6f0114763861df13c2bb291f77b8bdd22618940df4f0bdc7a9999d80. 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/DGA092308742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a509ae348610c9affd18021060c9a19e8343407dd860240a07c51187236012c. 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/DGA092308743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28700352581d7b5a3a7e1ff2b83bbdecdb31f3f29c88c04eeaf2ae5695cd1c8f. 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/DGA092308744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f18c35688273deb9325a74c342685ebd330902699014a22fe448543f035712f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX452285601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33d8e1077659c9c45995f1d6340ae080809fa632a0ecec87db8d01c52dd18a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA092308745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f145c332a5c3f8b7abc148e282c799e7ac36b0d4948552a7689d1066da85d1d. 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/DGA092308746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c936c5d4c5bf698aabaecdedf2d1e31d5b148746e1cc6801253506cfc5a4f. 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/DGA092308747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63b1ef674c50b8f0ed6dd4db39c5d9749dcca8056c81c26b6511c1f9e9879ac. 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/DGA092308748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064a91e59fc9c0584e0f82ff6dba8888907d515198b86b1c86b39c6364ee21ae. 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/DGA092308751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f478d160253797251edb914e7bf9d3446ffe4f2bb32e0e9f9f9f2da388c79d. 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/FR2X42476578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f394cae4c0d41a621de9882d9544ab243875994bf08828e1650fb49a8aeac4f. 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/FR2X42476579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa14722e47fdf81c652018f01cb9946fb8036c55fbb3dd8ebd299e00f5a8ba62. 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/FR2X42476580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4183c1cd46ac85b58a1a068b07b7c3745648bfd2f738105ebf3d354382213. 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/FR2X42476581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28b8b09fb1485e9e25c89da128ac674e4de9c6c593d81f96a9f4bf1bd5eed4c. 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/FR2X42476582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e07259c85943130906dabd15778877a5aa6adbb94e110c65341425ae514aa6. 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/FR2X42476583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19320899f6922b3df723c8af1fde6c39c2b7a90d8c26e5f41653386ea8aa91ab. 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/FR2X42476584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493fa8875622ea40fd4ea35fbb7d1f017d546a394d28738ee22a1dc4e52e2fe1. 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/FR2X42476585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf884188eb2863f5ecdf80e77be744974982c627a5deb6c4d18836e74b828b7b0. 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/FR2X42476586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1ab85d11599e0a420a40fa91f11ec12de0b1f1bba7877ab0b83477063a6a4. 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/HKC371652841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fd1e80550230c85f3893cca26f3200627b9b897453ff2d4b455fbbca3c3340. 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/HKC371652844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865e203ddcfb848d77fc79527fae5b5befbc4e48d7e018dfb4e4f45eafc62c5f. 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/HKC371652845.