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 0x0a2e8beb717eaef1511bf1bc084de4b722a41180eb72b5d40cf098139f14654a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c2b3f60-855e-4b9e-b0f5-ab0a585e3388.json and https://artists.proofprofile.net/proofs/artist/3c2b3f60-855e-4b9e-b0f5-ab0a585e3388.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 0xc9fcfc43aa6224da7e94e11874b85d527d1b17cb2956a9cf97c90785be4d2122. 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/USANG2448924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d383c26b5d908e86af8da297dc0f1c29a4bdaa0d0f3331be3994e1af2af5a2b. 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/US3DF2439492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f000483471bcaf8573138801715ac9e656df3892f4acef19f7ec8700373914. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USANG2435964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c5f6241ec2ba58c2b0e1aab98a2464f30b4bc2fb672b2c7c8c9a4a1d75b49d. 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/US3DF2426756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a6c33365183fe20aa1d9949ea223a9a5924c4c657ec0312eb2209aefe80e5a. 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/DE1L42410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc7d054e9d7309641f166499130466b72b0ed2095082fd9791b0ef1ec30a33. 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/US3DF2426755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa987d903caba13e1e967b0adf3ed7b84836eae4acd84a444295c32a19618e8e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRIDO2412918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9c0a43d9b0e185fac6dd009dbf5fa324f4ec0512289e6e9b70bdb1cffe9bb. 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/US3DF2467044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae7349d780b46ed1664acd28abc2f367fd2df7ff409ae96ea2377f22372247. 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/US3DF2460395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad8d26477eab5c8360f95d8681ad04a980b8afd0c26fe296af96bbbd7046ade. 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/DE1L42410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e009d74f1f3d4727993edf2e978b3e2350da8d0c2b8140cbbbfff3348d4d005. 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/US3DF2442475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824e1e2864fb928a98378e99d43e74174d734f17df6d70b1e4732044ef31a08c. 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/DEH742410687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27b250a7d42657bf3760073ae1d630b6833d00e2d4f7cb6d27421461ad5a1f. 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/US3DF2436447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6982e8f74e0a43d4a336518ee7f63540522f46c3ecaa091d353160e9673384f2. 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/SE6I32476389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a67c2f06b50bfc564365ad2399cedde0ba9f8ef3596abafe5f35ace32b4133. 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/US3DF2425222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d068ee45f9edc9ad3a6d734cd3261bc89efd83e1635b75d8e835c4a4c7b15b8. 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/US3DF2418967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5959a534713616a6ccc7591f4f20b40095ab5e7d4249dc442d76157df46a00. 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/US3DF2408957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f80b357cce01a55834f8782f8c597d98ded12fec8e9baaa33c590215f69dab. 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/NLX9G2400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0608d6294f7b6196ae258ed1d111a27951d2f36f776adfcd74bb8be107faf9ad. 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/US3DF2411472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ddfdcb11ea42cfaaf3a78868c85c347ef819a1a342e1d8b2a04ddb4bfc4244. 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/US3DF2337015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b99e39aa60cbda6e67d66cca65dbd4394eb5fc7afa96082c6036a1a366e2e6. 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/NLX9G2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbebd2a83fb27a7c285002d27c7283eb785e109047ce0752ff5ed385cd773019. 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/DEQ022384397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed0acdc81ab4fe3050c8a6972d1abaf1401e68731bb67e42e4f71eda3a5aa1. 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/QMANG2212043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb0c01b3ae834de654688f29e008aab310a5c40eee1e13f4af503733ceac23d. 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/QMANG2228949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35bc10bebda9b95e8bc29f4b27a7a91b217f79d5c4cf61c2e8546876224a2ed. 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/BCD4N2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ad885bfe2156f1f9a4e5a5ffe9418a9759a4aab961cd48d19ed01fff562d3. 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/QMANG2219858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7babfa00b903dc2e7836199c67b46a07ffcb7efc4e61bbb58d8e70d51165b7bf. 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/QMANG2221416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f849aa280663aef16fe87e79f1295c991e2b2eceb8d5c7559550fdc3419a0f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH7812363159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda7f23c16b7aabd6d09a66f10d27cb42461a2b1898d42790f972f571b3e85b6. 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/QMANG2207074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5566a8ca432b71a2875503ec1378e6c0599274dabe6f9b48529e068c3dbe7e. 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/QM3DF2294517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8bc1c36e1e3b49c8e955131dcf900311442f2aba58e840c1f939a8a949c5c. 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/DGA092358155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675af3e5e4e6a6a99f85ac8c333b41c356322e02b144a1d67acf41e9cf0b1ffb. 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/QM3DF2215086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d068ee45f9edc9ad3a6d734cd3261bc89efd83e1635b75d8e835c4a4c7b15b8. 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/US3DF2418967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a67c2f06b50bfc564365ad2399cedde0ba9f8ef3596abafe5f35ace32b4133. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US3DF2425222.