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 0x282c38fc8d6622599cdfb7c71318a0e04d42fd5478b439deeb4ae1e32189da13. 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/634fa0cd-e327-41a3-80e3-f31c3f3a27a0.json and https://artists.proofprofile.net/proofs/artist/634fa0cd-e327-41a3-80e3-f31c3f3a27a0.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 0x90aad62abfd370b0b08c5449974095369193fa0e0e4715feb7d6333b91db8f52. 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/USHR11939296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8089f6ffb0b1b1d213ebae3a491b56efa7f12855960550033c1323795beee39f. 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/USHR11939097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3ce827d9781693bfbb163d4f35361d49a58a719f76377f63d47992ab5d5fd. 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/USHR11939247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245513f65a3aa87afc424230a8d9c3e9168b353c50b6260e5d61f7a8f7d4ec89. 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/USHR11838511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e689201596dd6132ffe6adcbf4f66d739596e57ec76b875d8966424ba4dcdd1. 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/USHR11939297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3cad3d2daa66444e6aca438fcd5aa93f8d2653a33c8f8b5148a79e246a0a5c. 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/USHR11838473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f63c9a5048b4844e6afd7cf81440243ef5f2b68a097f4ceee4dc195942b2b6. 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/USHR11939298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc2512a129791eec8cbcbb925d794062d1c22593d94213d644ff90c345f3a57. 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/USHR11939162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1751e2d5ee72a504376e5fbab0c5159e1112cec1cb0a6c24e12686be8a015c53. 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/USHR11838716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbee634c9cebdc72a7fb0cb72c1ee1362190f711e5ac995bc8601d6cd6525f. 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/USHR11838366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9189555fd0c1b047c060eebf348f7c1de94b73f6b27379e33f604cc9cd35705. 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/USHR11738173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c11515683926a47f82ec118d957a8f10adda716e60b2c989f551fa29d37b7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNC1967404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7777407cb326b40c43c9a4c3727df248b3f4c0aa66af0d5f73ad9e6ea8777f4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHR11838413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48599f8e7d99184c0b87e0d69231da43ace0a29872deb3384960e57cc40c20c8. 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/USHR11738282.
Feel This Christmas / I'll Be Home for Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9189555fd0c1b047c060eebf348f7c1de94b73f6b27379e33f604cc9cd35705. 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/USHR11738173.