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 0xf423941aa5452e556a32ea2b9b2258cdb09b56ddb99ce3710ea324038d91e8be. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73de1f0e-21f7-40a9-9816-c5bd8316f2a3.json and https://artists.proofprofile.net/proofs/artist/73de1f0e-21f7-40a9-9816-c5bd8316f2a3.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 0xa5c687f22e6a17fda024d174df2a12816a2eb963f63ea9f57dfb13685affe8ff. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USCGJ1701571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f378f154c3b24ceea09cbba817e639b088587f2950013787baf9d9b8c8026a7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDY41861367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a051111839710482353dd160c15ded91e2dda567083e3c29d073187e9f35f7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM81883874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5171eb21b30f010807f73ae4688201f3ffe0f4abaf13dfc9d6b8c7a83bafe9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ESA011861751.
Ella Se Vive la Vida Bailando (Si Tu La Ves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f9acbaa94c1f94076bbb911c891e9cd6374392c72d81cee7ac4c12b9915df0. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ESA012153892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10b4e7fd8b1276f5a1cb8a2fcb5d1d38921272c75e813ecfb431b14742a37ef. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ESA011533094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bf93879c9f7077a238479c4b8e0ae0c5dbfe734f0249775fa7954ed6a0b275. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA012276115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a9dbeabf0360f9d19c75549e51237612f3f1efbceb1758669a945a3e7b447. 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/QZYFZ2389451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9229f34453341d30c525813fc01599ca2c51b00dc2adf79a110af27c0d2e0e3. 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/QZZ662354090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ed64b18c861e0f3f180942fac89057f94209c028de39a179ebf4f0b620cfbd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ662464478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9291ac7f25dfe3f8dda8626e64c1bfee1dfc607a65a3b31ba2b3b5777c9aee39. 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/QZYFZ2427391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f5bc6467d403a7543f0331c6edf8771a59a0b5b0a503822f394d1a9a23c8c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZWDW2462753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdddb8269efb7d5df2e95aa215ca921b88ab7106abbd4a36a37dc015a13b7e6e. 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/QZN882404762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf123c4e8f98579d50da6df5ee969c7bda2fba51a6b80d41e98d5293dbda70c5. 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/QZN882530909.