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 0x51010adf1927c4f7ad4b2f761eb61e633ffcc573161ddb9c493ad90370e258bd. 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/0afbb686-a8e2-4617-81c8-3a65a8675896.json and https://artists.proofprofile.net/proofs/artist/0afbb686-a8e2-4617-81c8-3a65a8675896.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 0xa78d00abcedc7705ea8283197d6da735f4b4eb4345ea77014b5810dc8dba2721. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE862300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d0ae53ee3917353a813b29f0b5c232da148a5ea58088f1b695e1398029fdf5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ8GX1702015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130356440150f583c666116cc7d9b152c40fd6466bd8edfe06c6a828c8928ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ8GX1701824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb392478812b245d6d5f80b916bd31d6f8804b2c0b7be5728096af6dd3ea1390. 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/GX8LD2481465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5accfbb3a1495434b39cae5cabfc63f2bb32ecda8db313c0014d07a1b3cbc8b. 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/DEMA61907077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819e39b54b393e30e6d02e2e94ff328beeba5342a6c5aa5c3561f385d41fead7. 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/USLZJ2490454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf06d880f41e703d0d6c43ddac30f5b9ed8aaefa408c89509c78061656039d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LD2483662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbfa6253f177c98a78b4078bc532942bd016b956a84cc5facb88d08c1629d70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LD2461061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded08de75aa852e096fa757d1c02e8935209098321a42220469292f87987344. 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/GX8LD2429876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169955d7d565eef1b6c82064ec2a3c04ddb8a660ee62032214a1d7b12aa319bf. 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/GX8KD2426733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab0c69f3296be052e7a8cf55e6c8631f1d8635086280e0792f2795ce55a45dc. 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/GX89G2410088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1535019dabc189b8b19e1386a0217eec7f6c15f847c5286c2a5a51b22348c37. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXBDS2361159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d6b20e82642a6e2e73bd0bdf54cc43c703a7779ec85712d873c5eeee14466e. 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/DEPI82320364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3a898d9fdcd38a1d181edc99c01391650c2c190aa188f2d2de74e79f7bb66. 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/NLT2H2300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644d107319628e970dcebe2b084d979104dd5d7a965c9fdeca79729b937c8f3f. 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/DEPI82319694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe62a3c0c1491b075003e79987be4229e8d8411f4ab44b90c8458456d55dc52e. 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/NLT2H2300750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba69453757f82f5101f3375fdaae138e5eaa2bdb0f462fb47bfc03dcf93fcba. 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/GX3HH2376097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130356440150f583c666116cc7d9b152c40fd6466bd8edfe06c6a828c8928ca. 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/QZ8GX1701824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ceea51d00f2027967dd090fafa3238f186c33e1fa4301d5a2766c1e2700ee. 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/NLT2H2300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072674b40dbdb657c58eda8c7908dc6ac97b94852d7fb7d8a61190fce75523bc. 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/NLT2H2300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9004c8c55c8045a0e2dff97415d0b2617a9ac4b8e3e1a1011d2417d9e9352803. 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/GX8KD2330995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc9ed56573e1743625e2e86bfbfcb2947787a78a37c1b72c84315d57b24616. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CH7812346288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581e70e38ef249a507821e0a517beadf8431433f7df2b24230dda3940824bff. 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/GX8KD2337893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70813617c313f5a79a8ba05327ee893ee0c9e29b8a4d06c514d03aa18b046ac9. 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/BE8LH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ef352349952a0ec2bed0fdbcab9e406528892bca7fa7cff07c5456296b01f. 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/QMFME2217413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa20dd4c86643150fb2c8fbc7a1dfa9c5c833f57aff930ebacf7f8fb5724be1c. 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/DEPI82219057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdb1d1617726751794508bd2ba51be49c80f9c8d23772de842ca715de7d0931. 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/DEMA61905700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25de631bb4beca7adc4ab288300c0597cc1dc8f554ead78a1606825e5e65730. 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/DEMA61905620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1113d52641612a9f1b3dacd731a4600f400e463528296c0fa17c564e04ffbea5. 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/DEMA61905560.