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 0xeff6c3a3a79f05524f93bcdd67c458687f95b6e40d065c82494dee49cdbb1885. 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/ffad4861-ac4d-4f93-adc7-44ce40fe48c5.json and https://artists.proofprofile.net/proofs/artist/ffad4861-ac4d-4f93-adc7-44ce40fe48c5.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 0x6d6e92c81d44ba46d8bf8e329e4374ecb783d2c6be011045163b721823e39be5. 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/QZK6G2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7ef4897d7edf70ac9b247d4fb12ab4f4caf8f91b159c486c3e59dafe0ac8c. 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/QZK6G2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b96987eef0d66c69b639597766c12604a97b18c86083fdd9ed7953d54c8df5c. 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/AUMEV2434571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bce4df1742123e1b484f35912fedc42ab52d0a08031df89033a210b5191f00d. 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/SEVOZ2304801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ee769f93b9eec67f821c42bf5ee8b09febad8952ec8dd310d1885b5ba2c0f. 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/AUGBT2352629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45835a07aca15bc539a9b125bc0b5d40820d24f8c30a1851287ff0cf9ff4ab. 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/AUMEV2472416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff24ca2adeedee8d560f0154f4d0328a337d595ff987394ef8d38b6a40a6c9. 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/QZAKB2412711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ec433b88c96b5388f7aed55ef109ee4a96a46bc2e05fbf4ccc191a6344b2be. 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/QZAKB2410471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de6f6e6b4d04d87cc430dbbcf7e4c947ffbab03f624e2c7c3c5388b01a31028. 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/QZAKB2405976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce3faa64ea80d63c0b1b0b5bc60435af17f7151d09dd949f5c27065f596d7f1. 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/AUMEV2465445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29dff16a1bfcfa1305e6aaed982b94cc870e00a64b8cc33d9d24b632d271aed. 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/AUMEV2410324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227daa844a82472366c669e7ed37aaaea4906f9d8fd5fe391a0f99bb4d671e39. 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/AUMEV2427413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef482f30d53640cf82f4aadf82a89e8465711d8a389bfaca1d3d1a5eea665f. 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/AUMEV2400656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e47a82beb62f30fd96ba3e31a4d7c1e91fffea954c4326d5d4f21947e908c. 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/QZHN32420019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a54b55f07470c1a7e1f165485e19c350af8b58463c79ad7479b95d777bc68c. 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/AUGBT2357502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf3cbd53253517dedc435c06163c72244e3bf4ff0ad27f2d52c6638425773d. 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/AUGBT2357147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a19810a192df4be2fbf9ef0713ebf10fcb6c42a98d0f8184afc7dad1a549fd. 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/QZWFL2358087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b3c85ef453c64595dd7aed3642b934434b42c68d9cbf1a0197ae75788d01a. 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/QZTBE2387666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b261d876cb42788ce2bfdb409d86b1d5564356082005b7ca96009319875570. 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/QZTBD2359170.