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 0x207394b06c4c75ac0d4b20b241d282fef55439a9487bec0388597d19275921c5. 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/4fde40ad-0b8d-4b32-bbe4-0c5ff1a63d13.json and https://artists.proofprofile.net/proofs/artist/4fde40ad-0b8d-4b32-bbe4-0c5ff1a63d13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Found a Friend (feat. Junior Maile & the Genesis Choir)
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 0x21f5f136e42093e2bf45fc392d4ac7c2fc2cca5e39fffdc61a7117d64d91ff90. 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/TCACQ1660610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c509f42dcf63148f5f38a0b470fb5d10e2961e91d3faa22138a9e1b495c136. 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/TCACQ1660614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf745df21d29aa398859669f7ab1a134208bdbc1b64fa56f8f8a5b11a4526f85d. 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/TCACQ1660617.
Motivation (feat. Jay Warren, Junior Maile & Sione Toki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1afe0017377f777b7c3a3eacf191d1b07278b7b990852720597d01d75d98f. 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/TCACN1650535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa885664be4296fe07380b8c13ce51e40619cbe26eaa2167200e85258b637ffcf. 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/TCACN1650539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7427672997e8516d26fce5db0cd3185f338929be69e531f1738eacf32b28742. 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/TCACN1650545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74cccdb8e9af80b8ec7416ee87bd128fdcedb3d487071a79327c0f1f8d26ca2. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:06Z), 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/TCACO1642399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7156ce250ea411faa8624098fe5de7a2320eea1b501c51ddefe5e4975f76b7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCACR1654355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc056bbca4200048927a51655ea847a0761aaa4011de97852b158746312f83. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCACT1671693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c93786c33ae32451f8f3b07a1a1b9aa356738ad51cc41e350c7e52596dc725b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACZ1759100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a7103330c956fea860d878ffc8bdd3743e52838bce06b6a75c7c73d48b8d2. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:32:23Z), 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/TCADC1761808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b9d37bd0998b6de9cced35e3ea70106e21175869ddc0c6988caf40a14c351. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCADO1860691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624879a2f1f6c60ef5626ee18b51dcf77e7874364d7953a0f9ac9e40db66a373. 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/TCADO1860703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374cea314b1335b901d9484754f79fd436a7f2019acef36e62323c381fb19e1. 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/QZAPG1843235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601a84ce00e543107422a05483a4c2f41925d336c4a85aec95ec08ecb081fff. 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/TCAEI1974040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830164977588209cb69006e2110de9b0fde09ce54481e2c153862dce89042853. 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/TCAEJ1958638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e536889b2b910bed86ada7c84559baa5d5bdfc1f8560d140cf88f57ed57fc. 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/FR59R1887077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b73005399f767c940a308ab079d1589c5977632ea7d7a2f12e3aeb9232f8d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADD1766994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c93786c33ae32451f8f3b07a1a1b9aa356738ad51cc41e350c7e52596dc725b. 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/TCACZ1759100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705787a2d75f62a3da80f1d32764b1c34da6349fc5f0f175b95cf8e84406aa3. 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/TCAEJ1962836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f56c59d3f1b84b0dde0412f835b57e2beccd19be22831fbdabad025fd4859. 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/QZ9452000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e059fe9f5aceb33e8026ca1a10cf89436b3209df16cd5ae269417309ab40cef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIA2480354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb792b2dd063f120b9e199080bf31112222d4e542d2f90986e8ad6d52754815. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAIR2494853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c2e19c8c19b2845a5c7dcd29a846dfdc414823fbf5b0179bd096db1e16b49. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QM2PV1810505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c2e19c8c19b2845a5c7dcd29a846dfdc414823fbf5b0179bd096db1e16b49. 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/QM2PV1810505.