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 0xc90994bb59018a822bcc69cf06896f9fc3051fa2d921721230793cb69da12163. 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/9d410cc2-1614-4188-8e0f-d7ffce4f3283.json and https://artists.proofprofile.net/proofs/artist/9d410cc2-1614-4188-8e0f-d7ffce4f3283.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 0x5d4ce6484a6dadb00c8a47e1076fc65fde037e19b9ed3a1bee9c5bbfce405cab. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE6HN2208991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee884cbfa134b2cd309b126edd585908f4953085e870c5e66c164529c2c60c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6SA2217495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155df7704383f00ff07c9f4bf0f0ce4ab8074920a7591249b7ae5c5ef0b32262. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:17Z), 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/SE6XW2206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dfe44c20c8634c07ee304e97f6225846bcd0fb14828374279ffac2c2aaa47. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SE6XW2298101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e01cedaee9fb5ed4a5b5709e319f2a92d42a38180a05756fb281346fcfc83f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:26Z), 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/SE66N2294678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a5d4d7ed7a41fa42607e0f8a79887f836f5c46813a5252297ba0edf86c58b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2268912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a290c27e98734187c172fe14c7876fa1c6b71e86c93a05248deb55a5aa5242e. 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/SE5BU2408399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d1ad584a4ffef0686bca84646da88b5012ca440a5baab8e0d868ef3872dd8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6I32441075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8abb2b3f8e7b51bf1bd4a9b907ae947f56535767e7cf46bc4d4abc3be1da9f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/SE6SA2407863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082ff0b828fd0d06415b97e2a420f707315040f9e4d43a79edd63d9acb9c3c2a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:58:37Z), 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/SE5BU2503054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8915b95e1a6c74555a983c13af800c11bb8cf540eb9dd512eae606af9195ccb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2519143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b0025bd55275d27bdba4496d90c9b500c1cffb644c9dd733f5b18cab1699f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:57:04Z), 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/SE5BU2533031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42afe23aae16fcc6d56baa25e6b462bdb589d5e400eeb7144c641d510ba0295. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE5BU2544373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8bcd9944e12d44652f9dea2b746e003bc295f7408120a2297b456e5b8f25cd. 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/SE5BU2558246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a8ef525b773f4fe763ba84a27408e35350166ed2234abede3ece3e7f8177d. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SE5BU2566852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece366aaf0aa42ea50e8c2258f7afc231fc58b7ca366511e262954efa5645179. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5BU2576420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2365111599e32a24354657282c2572ec6ced62c2fb7509af26cde9de3d92ff. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/SE5BU2587842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba518610f5bd40aaef3eb8ecf0137971a5d702ce07074173256ef14bdf59fd86. 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/SE5BU2594518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78f139aff8d767824b6687679db1951f1ecf811ce13af91f2688e464b29d9f. 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/SE6XY2532061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63618b2156eedf3d087f9eed8338163cfb0ed00928b9ed8ff99264f7b98bd4ae. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6XY2566882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9839eec6bcd919dff5ad81fcc495282b30e45eba09fd674f03223d8a2e903. 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/SE6XX2583178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6750a58b70f409f0c3009550ebb315f1d5fa0cfe669e13e5f6d3ea60fcbf926. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:56:56Z), 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/SE6XW2517889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b3772f6ede50170d4e9affbebe47a479c7c87378036dcb7aeab1a4d343ef4e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6XW2587693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ac75c420487c3933a5fb139d781fde707e4cc12a0232cb69845ab63318334. 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/SE6SA2514341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd2f1a7e32beb658f5f909966cf8813c72f6cfe22fe89c052781c267c0912e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE6SA2543886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb776d490b661e4bc92db92aa55d69c811534456b96f33664d0fa9bc6822c3a08. 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/SE6SA2558553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b181d31c950f94f833d8de77d4d9e0e9c043f1ec7bb647767228a2f2ad7eae. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:37Z), 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/AEA2M2533106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72897530f3275570d3b32b277ef4bd83077f3167c05f155cdfac4d70ddf8a559. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6SA2580482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd731551003e9cf88caa7499c20baa8dda8cc58bdb7e868651ba9515101b1beef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6I32560653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b9a68ff40c05d0d4d623333cf8f346c43b6628eb4aae7a0d4639f2e0b9dbc1. 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/SE6I32587001.