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 0xb953849bb7231cae2bd1679ee7af427f4a1e12178c02c3ae201d82d7a6f808df. 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/d8aafe06-2bbb-45c4-b457-ce2f2f726978.json and https://artists.proofprofile.net/proofs/artist/d8aafe06-2bbb-45c4-b457-ce2f2f726978.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 0xc1abdf450418822f187522fee614a33e7544207b5e83745785f04580b50ca28b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TCADR1808887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42afb3e9a527795e74de33181dd84e0fe30cb4e4e9edce892af3c3197018480e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:44Z), 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/TCADR1808895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d73ac682a04370698453920cc01f23e15eb3da60c858f5a673ae73b34b309. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/TCADR1808897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8771743ecc7bf2be337d94bf8045bb3ffaa97e124c0c3204a1f9407c44bb95b1. 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/TCAEA1831081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d47f3d7ad7b3f1aa3da934e9c4648a30fb66795dac85660e6cde9c50daf6be5. 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/TCAEF1957268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ebaed1b0a072822fae2dc174dce4d5480d9eb02f76c30912ca6bc18011331. 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/TCAEH1963301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20a24cb42e4af457be90b0cbb8d7cb3fdaa412795930a407b28bf73e30e968d. 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/TCAEH1963313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b7a739544a249d8f4f8ef18795681833fea2c448c4131e7d033c17ff72b259. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAEH1963328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e810bde968179e499a3e90e7c3d81dbfea4365c67362d0cd363dbe903950b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAEH1963329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce2f24518db004d9a682830b18c22de53dbfec2eb3b9de7f28548ac9b92934. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAEH1963335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad30f6696bd79455660a3c2a0339cb04f6669870a0a0674d0dac0af44bc2b75. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAEH1963337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99f91bdb5771e632a646441f7630a3186eceb82ce5be94d1ba54083d500b5e8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAFF2072815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ffa22eed8ce65bc651077c7fa918d47b79508994c49a4fb4118844902482a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:19Z), 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/TCAFF2020007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21eb703459411e40dceafa6724d1f932bcb02892dba5e65d61a5701cfe02be. 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/TCAFG2084278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407bb8a4f578bf594da0fadf66661379feb85a1e3d71825c11fa635d29de4803. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZRP42134473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27143403c27aa2197fbf3b2125072e64e3f27a9b291fa17cc64a83a684fc701f. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:29:50Z), 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/QZRP42134474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf1f02363046de8fdf3bc97b0924ffa16e02484d2d62dddc6f539941788a98. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES92214433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f67347b2fa704d0cba8fd689e8d321b2efb29fbd5c4091b00fb818bc588a6b. 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/QZK6J2390935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407bb8a4f578bf594da0fadf66661379feb85a1e3d71825c11fa635d29de4803. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP42134473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1340af52c19fbda5ef93f288e5140279a96c15085eb6358b1f5c2af30fe997. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:21Z), 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/QZNWT2328109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c613b9d217164e1e3cc2d12817abbf70dbdf991d129c87d9429bf5758055e3. 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/QZNWT2328110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6888a2c60eb6c20b94ba75eab6851e88c0d74cb6533d816d7830ec85e0b7169. 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/QZNWT2328111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf1f02363046de8fdf3bc97b0924ffa16e02484d2d62dddc6f539941788a98. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:29Z), 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/QZES92214433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2096b01c315702415d65099a4ef6abb64229480cf8c26419cef2322d33a344. 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/QZNWT2328112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27143403c27aa2197fbf3b2125072e64e3f27a9b291fa17cc64a83a684fc701f. 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/QZRP42134474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a54aae4e97a202f0a131b169ce5cb8f7e0903d6172d21af02678dbf7fee1bae. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:14Z), 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/QZNWT2328113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae6b6f4f8399a1e2a33a4dcadc9357ab48cda918f8c5649cebc0adbba985510. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:03:06Z), 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/QZWFN2369043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb6e11df94332422e0cb534ff3f2ce05ef923e9f53d94e57a9e9827135e423. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFME2407163.