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 0xe4699172efa8a99ec640993f61a334e0f9b24e61a4011bf09052ef7353d42317. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d685e3c4-d93c-4954-80fc-3ed19d7140f9.json and https://artists.proofprofile.net/proofs/artist/d685e3c4-d93c-4954-80fc-3ed19d7140f9.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 0xa098d69c93a4704c33244a69373349ae94643813bbf956cfe8b5ab0023024455. 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/BCHY22300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63be2cb68c064c1a2b5609c815605c979a15b092179ed6a099b72af4fcd97c4. 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/BCMT82400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea66d58dc303ef28e21efacb2eea7e18874525c0d87bbf5c7dc142c3de2cfc5. 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/BCMT82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11342955f1fe76e417661c07463fdd4378f4b86daf722cbf387c186812aab5. 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/BCMT82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a01848b8dffd71b6bcd70282459499a4ce3a24f5ffb9f5a5a0b323964c625e. 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/BCMT82400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17459fabda100a39bccb261419ef3395b6677350a3216fdfc952bb3a7d6ab70b. 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/BCMT82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120bb29fb8a7380aa0e171eea69dbb457e173f486147eba2a7e4e68f2a4d09e5. 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/BCMT82400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e5b68f7b1defb270597aa374660ed6848abb65757c3375c92347bf1963bc4. 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/QZTV32203989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a01848b8dffd71b6bcd70282459499a4ce3a24f5ffb9f5a5a0b323964c625e. 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/BCMT82400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17459fabda100a39bccb261419ef3395b6677350a3216fdfc952bb3a7d6ab70b. 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/BCMT82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11342955f1fe76e417661c07463fdd4378f4b86daf722cbf387c186812aab5. 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/BCMT82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11342955f1fe76e417661c07463fdd4378f4b86daf722cbf387c186812aab5. 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/BCMT82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582091bd62560ae57d696600930d1d41b9d107ba5a263b8192487896a8486358. 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/QZWDD2383783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f960a43fb891ec182bec32dd43aea5e0a053134e86493a967f52aa46c3097d. 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/GBWUL2353172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9615a8b57056217ae09a9b4da0cd7cc0e91bc7c6fe8055f307e39ab8a5684. 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/BCMT82100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da9102f1de5e158c5f76f156b2fd51a7059eb062ab50807591826f5f4cabf7. 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/BCMT82000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa098d69c93a4704c33244a69373349ae94643813bbf956cfe8b5ab0023024455. 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/BCHY22300048.