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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab32fd94656e76fdcfe9729af50816a093d67ca242c63c52b2e1f28ed5d801d. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40390a40-717a-43e7-9874-9bfa1dadcf30.json and https://artists.proofprofile.net/proofs/artist/40390a40-717a-43e7-9874-9bfa1dadcf30.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46b1e9c1dfe1505169a596b4e8288162b7bb65a14adc63b028d00b2eb1065a. 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/USCGJ2219964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0794d825c17f352c8c9f7ecbb66813486d055561ac49d1093f50ddaf012b0188. 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/USDY42164512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd5a7c5f765564cc5351f3c9ab83662b16a7a6c598d00c1c705f417dbfcbc08. 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/USL4Q2380539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c3edf36540fca06ef0bf30b5681b2537b3933eec1343a22b8bc610e9baad24. 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/USL4Q2380549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7252cdd0cd3db99306cef09acf7d781bfa89a49e2929fc67206426c2488b9bf. 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/USL4Q2380530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adae5cdb579252996a59889fbeaed13a32b2adf0b270a5bb35bb172ebabd3e3. 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/USL4Q2380540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f74f812bac5f24727b87d86cac82c011cea6d69da6c4e3cc1720b139e4f5f7. 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/USL4Q2380550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd934064d45a6067acb962030b1c9916b1b108e7e20071479ef57f04b5ae3661a. 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/USL4Q2380531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b690091750945def51e1ba63f85c117f6ea21eff9a5fc91fdf902270a7a82ed. 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/USL4Q2380541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe516806463805ef9cc802b51a516a6db38201a5263b575c2de8b1abea96cf0cd. 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/USL4Q2380551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e79450eeb69c9393a834b8d56f678bb773f7e79c83f6a68b0390eb653b9be. 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/USL4Q2380532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd0a3f791de8d680f96d5d97e3de56efb02d219300a1786252f6b6732456bf0. 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/USL4Q2380542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bc10a15f1c9e4731b9637010405c9bc6ad7d18383c23ef060fb8579b718871. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4Q2380552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3f09797584a07278621cd0cc26bf6dc99ba27ce619b4961137f0dcfb548357. 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/USL4Q2380533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff58e89dc81163d6988b3b80bb4462bc9426f0d9a5d68afb8164ff8f7d57227. 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/USL4Q2380543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee060fd30ecc6a102e61e8b0c31b6854be462ec5adcc8be0e6240f18989bc13. 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/USL4Q2380553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82eff86b1bc67327d789c014a08218911b72cb0512c21f635f416fa3c06bc38. 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/USL4Q2380534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0048a12848430ffbd11086af08ab909379e49029f0bbf3c81c5baed1e34c89a. 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/USL4Q2380544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c77fadfdaab03abb4742cde8f296ddc877d821b73025eeb3ded52f211bce822. 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/USL4Q2380554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82628cf45953f3c2ac6ca1e0219f42afb861a4c90ac10e9cb2e80340daec0229. 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/USL4Q2380535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed4371a41c447e4be137de5e38e2bfc60a2b9efa5edb48bb2dba4b65426fc5a. 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/USL4Q2380536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a156e534fc8c69c664f9df1be6d412f3c3a2a0dcce5136af12786acce62aa1a. 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/USL4Q2380545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773e5fb8ede1fca342ddeb37ce1b9eceffd36f1d1eeb2672c0192014ba258178. 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/USL4Q2380555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273ab06d0c08f6bb176a61668c43147374900be5290736a3e6eeb8e671ecb416. 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/USL4Q2380537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dd46b41d8c42e9eb3b816bad12b2b6d0cc8dcfd9b6d7cc05cfb5fbb631e1cd. 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/USL4Q2380546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0630917c7d7de88804b39764fb3343a69c7ecc923b27816cf32e84ddb0623d23. 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/USL4Q2380556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f381e272db5edc46d1884faeb7b02cfbf19b2f1eadf4900d542cfc2216ac635. 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/USL4Q2380538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667c3c0c9b8a9baf5cf6bdc914e4fbc4e4e29caeaaf3574e950b25a3b9379d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4Q2380547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6beb6eb6cc5073322dad2072c4f758b5549dc5b3b3d9a5f30edee464d8d964. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4Q2380557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9b1afd278838fa5b6c5a4bcb78490aa3c5186df2ab240ef3ea5d0558b39b19. 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/USL4Q2380548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0989d825bd7a7b1f9ce004e763030875de7c258e877378c2eaa16513f3465a. 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/USL4Q2380558.
Gatlopp: Hell of a Game (Original Motion Picture Soundtrack)