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 0xae9784d597abe4c351b0eac894f73a272539a4c3e72fb611a0c482318779ca94. 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/a20031c0-9569-419e-ae83-207b86f9abf2.json and https://artists.proofprofile.net/proofs/artist/a20031c0-9569-419e-ae83-207b86f9abf2.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 0xf99637ad59fe329afc243efe47d50eca03b5e6036c8c5d1bb8336cad1453b8fb. 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/NLV5Q2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652beed6e56449f906f7e28497f5665b3ebec2dd0a174e415db2d3e6c8ad00c. 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/NLV5Q2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92476d6789c91e52cf2c3518c2987cfa1752699e1c5e182c9ded42265910080f. 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/NLV5Q2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f1c15ea12a3471fe5781e74b66fa80a18cd4d16e256edc21b7377c8c0827e. 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/CA5KR2101538.
Do you want to try (ORIGINS) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6364e4577a9c2a847be8d62a227e33a0e262ce70e74c329c75ed31d86e710ddb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CA5KR2101532.
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 0xe96e714b68fbac5c96b1fbd7fc2d7538b5a90e31827980fb7410f2d73514a439. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CA5KR2101533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49021a87f5a542401b8bc6766fe4adf2a8765398d99b11e3ebd4e76c9b62bfa9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CA5KR2101534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829176fef025b3bcbbc29b37ee360f8a9e5516acb623844f884515326a151853. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CA5KR2101537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cdf72c9c4ce96e9e659da45e5145be944f2a8b7efa7b4207172fd53907273. 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/QZWDD2421030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a8fda1c1fc83d19335782f3a2afbc45e282386552533e10c6e31c04080d46e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZWDD2421029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e68e8355a9c706430637d2e02fd425fe932cf1f908bf86ec828728cd705951. 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/NLV5Q2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edbdc7678ee7b4c7f9ee9f2c581e5be3b1e7649be3881ecbd7eabb24db9bb7a. 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/TCAHT2490315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838ff46d25e2b345d8cf26a2c32b559e38f58ffd1592104cc457666d00c5ab5b. 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/QM4TX2408829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73727dd53c838f38274c4ca6d624b0b87dd427363da8de90cc3d99710897176. 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/QM4TX2408831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb78dcd7d62bc7fe44afa79208832531460ae2511881a5205a0550f3d799f98b. 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/NLV5Q2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ab980b569d7da3bbbb096eaf07d7656919daff75727d40d6aab73e70132bb. 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/TCAHL2353440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d42a2e28da109c42e7bf85eeefa5beb78e34b08e627a0d4cc3fc8beed29ece. 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/CH6542349270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23568021eb93b53fd5c9571784c0201a158d1cb13ae712ffac4819873e535339. 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/NLV5Q2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf169db803385129d5a046b1534b855b30c8ced74547c58b520d9863222d7f. 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/CH6542281211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4308028a67cd3254c258a360a26cab7a2aba892f7cb6379fae38eded14b88c8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CH6542281212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6d7fe7640739b2887b85c7ea49efe2139cc1d3fa0717a87b129a7585e12eb0. 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/NLV5Q2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9833d55c38d50e2c61870af4184baed89e6a1b455f677d86e02f7684db31a8c2. 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/NLV5Q2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913a6a35ae27479f593e671791cee3fc178328524c2bc6fafd77f3b66ede7ee. 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/NLV5Q2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138169ba5906fd6d26a8848ecf38299e8f07d4b2b8169995731f1c37ad337b62. 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/NLV5Q2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec21b83e85cd21681be33c69d10e0361d71165e05b66f9ff86d465574c87cd. 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/NLV5Q2200016.