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 0xd57d765217fb814f32e5e5a46549165290589bd826b537a9494170fae927ffe0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dcd9aae-ea8f-4c7a-88a6-d4b6c2071e81.json and https://artists.proofprofile.net/proofs/artist/7dcd9aae-ea8f-4c7a-88a6-d4b6c2071e81.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 0x7fe7188955dc8ab73826cd10c3914b7336cb70dc72322f8222cd99d8238b7fe9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAEN1903334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e986221f8f3a78e35e76e37194cf301a68410daf88819a58976b76d73e9c5e4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAEM1964365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f398ecaa7d946cd76e9c0d2c034db8542e6a997913e934ee8670b484e23ed. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAEH1978742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524572abf06c528266e569f6bbb95ebcab48df3e22e5c4bd77c1b66917c4378c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEK1921981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcba53635fe1c35d5fec033775f34292c55454bc7baddf5d3346a363da5e79c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFP2107611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35dd5c49c6082dfc1cdc6311071a1c99786794c1671f0f661ebf54cff36940d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFP2107683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352ae45d92be24f67c571cac57cfb5a4d71861454b52fd38b9ce5ccb35aa165. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAFP2107736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f972b7fafa9c9e44e27f9d90b3347e67684a88a0312d888177968a41224bfe7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAFP2107748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16fa29b979da18cca1de2838eb11572d3e8a953f56ec85bd4b54ac69f9d0dfe. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAFP2107756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3100e75c350e909603f85934a59c15253b169693dd8e5a6646b47124a6bc9d18. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCAFP2107782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b73ab3fb530c3e6c570edf3226b99b0294dd3117ba6ed277309023058526170. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFP2107770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a3375d7a184dd3042dbc5c3e0e84a3206d9bb49ddc9cf4565b0d59c67db81. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCAFP2107765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7cc8ae6e1ee1684143f1ba1e908705f5f0d27adebf95e7ac6e18d64a85afd9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:01Z), 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/TCAGD2295776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550f5fd5dbd7b1823d6829f779186b2d98e26c248313e64d9d1d9121a28a380. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/TCAGE2205415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c86a97cda0e051a8a5ef270d322894dc3c090da0a19d6cd0cc56eceec446e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAGE2208020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e820c41e22dafe01c827460a42702546acd961780af96cf600cc35985688918. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAGE2209062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f535cfe9bc633637b3f6141378d009e950264aaac9abd395b5da12628adf6d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGE2215480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9af12d7f3bda84c4029497b31f006db249a99403ff3964722c40f9af3b3acb6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAGE2296282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93cb08ae50a63d767e7452ce30b5dfb6820f123566e8e8b86f70a3c42cf996. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAGG2228933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835750dd8199216ef20c115cbf36038fad24f60e366b59b352e0414d831b9fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAGP2258926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a92abbc9219aad36a5bc6d74b7675379e0d246b5f83105f40c0f53b4de244e7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAGQ2286536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075a7994aea99a321c24d417a07a8de10aaf5422228907806f481d5c41229c1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGR2261271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff132e5aa3fe93a5a550592d4d674b052a9acf0943255acd47db6617edee9d92. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:09:58Z), 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/TCAGX2329546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff132e5aa3fe93a5a550592d4d674b052a9acf0943255acd47db6617edee9d92. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAGX2329546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05effde3338fc20eddf3164e7fa23c6c27317c71ba2207f4ea3118f851f01d9e. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAHC2397222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ff864c90863f2b3076521bbe24bcc69cb1c43e53e7cba557b5c744962edb1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAGT2398696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77df3eb85ea21dd395105fc24f9eaa5ba89be19b864f75be0bb8f4d5ce2dbd2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAGE2293127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5e877092cd1a118cafd7f262ed4d6157bdb179922cad5bdb72cc4619b5b3e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHK2316010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acbd8d933957b26253719bea13146b3afbdd43aa14f178b7e81405e8a333e6e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:09Z), 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/TCAIA2440673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ff864c90863f2b3076521bbe24bcc69cb1c43e53e7cba557b5c744962edb1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAGT2398696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b545cda258ec43690b43e41cee5ebe0946ff730489ee547077e8602f390e21d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:01:55Z), 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/TCAHB2330053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5e877092cd1a118cafd7f262ed4d6157bdb179922cad5bdb72cc4619b5b3e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:28Z), 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/TCAHK2316010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a92abbc9219aad36a5bc6d74b7675379e0d246b5f83105f40c0f53b4de244e7. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:30:14Z), 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/TCAGQ2286536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075a7994aea99a321c24d417a07a8de10aaf5422228907806f481d5c41229c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGR2261271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b9844cc4c559a348527a2740e4ef00dcb12af2aa80a01cc39110dac3ab5833. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJM2595475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a95aac26e7c2fb475af73745a30e7a95709a2d72f7de3d8db0d551c469ecfde. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJN2583363.