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 0x81517b3a4a6b24f7e269563ec0f744ba1e9998bcb632cc3894d1e2c0d5dd3e3d. 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/9ce2e8d3-ed34-4478-8cee-a6e0f7863d59.json and https://artists.proofprofile.net/proofs/artist/9ce2e8d3-ed34-4478-8cee-a6e0f7863d59.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 0x97f46877098adff0d1df8ebe5a38170daac2c4b0a593e5985f5dacb21f99f72b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:20:58Z), 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/TCADI1780160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c95f0db807d757c1abd12a5599262127b3dead847662f929df4e3b323d8ef7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCADI1780163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8283ff2423c1bad48a3197dc7dc96c4d736ae083fa51e50fdffeb1b93b115031. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:48Z), 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/TCADI1780164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa990cc8a98597f458f3cda4fdb3a67230a9c20464023439d013c8dc0d46a8411. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCADI1780166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f431f203198b6b3356ab15bd65b6c97e5c898b398a1f1443c2895cbffdca5b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADI1780169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c531787804b462f734336f3e90b2a6d8d26b9fcc0416c95d3bf4094599a55a9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:01Z), 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/TCADK1726487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72f628f1fbecb8593441c55548f6aeaf50d00c2c14fd4477097dc00a215583. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADK1726495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336f367968d47b6ac3edb6fd8d7c945c3f3020812bf474e2f40662db00de7c9c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:10Z), 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/TCADK1726501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf975f1789e4f9fcb1a3539e7aa103f4d590fac1b282385fe17d2ce11ac1505e. 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/TCADK1726503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba90da0d0997b8801081b66c7ee4da4fed51519e399a12d740cb9091297d9bd6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCADK1726505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cc27447253012cdb2c8958f7256e4056a0465a5e18e9a86f14b9c83f1b59dd. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCACN1678734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9641b690b798a252a8799e510648e84652fcb5c4fc15b2e7e4c64835897dcb9d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCACN1678738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0ae2aa605796a1334fc7c78c837a97a6231a0ca0330f6d691520ba140d5675. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCACN1678743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c55ba76fe9877a213571cbbccbf220c35634c9c9c69c41e712096a7ded9a80. 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/TCAFW2110320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f98c85fd5d678cbc0e2f9cb9f1b56dcbc9dd278daeff1ab2705e22ba5eb15d5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAFW2110337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0684138324155bdddedfe035b8896dd050f70502facc6f65e2fe0e305076a4aa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:03Z), 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/TCAFW2110349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c84f26701c7fb453630f928a570459de84fa30bc02222c826659ac321fe955f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFW2110353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d6a87fdb64ad4998e7778b4215c20827e684d3866bd7bef04f983c8435ee81. 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/TCAFW2110327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ec6e1f236719c19f085948e620a3894ccebd16747298a82815cb32d7f00a18. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:02Z), 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/TCAFW2110329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6c9a237d49c46df5dd697b679ac6b15c704f5a2312262eab6a110dfea9629. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAFW2110357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b14d5b819e8fc9d1ba6cb5b50b55f413b2a0d8f0b77d6e702ba20b0486dad98. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAFW2110361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa994a27ce59ce5152447f6b09b4673d8df9f26ee6cc0d41907b469322d7806a4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:07:02Z), 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/TCAFW2110366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5e1063bfa4e7d68eb38a9629e9f4f001d9965ba22dbbaf7765d012a041fbe0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:32:40Z), 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/TCAFW2110371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe15b0278d00de27ed58d3e5a4dea09216417a66cd2d4b370581dee649475ed. 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/TCAFW2110375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98358caac96551e756eb2fc8b2edf110000f6a8dea7342ed1aa8df3cbcbabd6d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAFW2110380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1ee97e55cec4c7ca0828e5aebb6e5c0f00ebe9d3f1fea6b2d81a0c189bd1ef. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QM6MZ2581548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43e3bd08ee4293a71e413fa98fe81e37edff62024c6cefc18dfc08a4ac9f34d. 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/QM6MZ2581686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66bacb869dae7123ca389b15fab41d91dbc4478f00475867a1b46952cb8dba. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6MZ2581687.