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 0x07e41a9fc7e326176b17bd3532bc2a6cf30703123478dbfa43dd7ed8415f4ccd. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc7f9914-66f7-4430-8f6f-e471b3203495.json and https://artists.proofprofile.net/proofs/artist/dc7f9914-66f7-4430-8f6f-e471b3203495.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 0xb4115fcabb01b12c68446432b35422d3594e68be5ef12e6064e664740da290b3. 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/HKG732006021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961057df1e18f6eeb5adc22c8b786aef96959836e4dba3ac8bc2a22fdb3412ff. 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/HKG732006022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc03236d2fe1fbe81c9e5ccf1a3c8402febc574ff61faa7af60e59f8af893b3f. 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/HKG732006023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f539d74f1dafbaf3c2572cd7888618ffbb8e6dbd0375f5a115e9541d03e9f7c. 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/HKG732006024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf1b83ddfe320e085b32e46d1120d1491f809d90f6923aaca0c7c6203b82082. 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/HKG732006026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809e72b76848964a1b7361900f32d09993128e4757e5236dad4d029b2cb064b5. 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/HKG732006027.
我身邊的海 - 電視劇《二十不惑2》片尾曲/主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525e90ccc4a25837b125108b44e818a91c660e3c45fd6f4757464f1ac6a6c462. 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/DGA052207271.
一萬件想做的事情 - 電視劇《二十不惑2》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaaf4fe0944fccef75408560a6611d73507a5495826bb84e894ce342e10c557. 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/DGA052207273.
閃耀吧 (動畫《白色閃電》第一季主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de697c5c4a2a9dd7bbaaf88f20c927f2818b2d7169632199e8a090543532536. 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/HKE672400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc2eb9a921b1a2f0456c2848d8df6d4c174124764961b1e54d121214c70fc0. 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/HKE672400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de697c5c4a2a9dd7bbaaf88f20c927f2818b2d7169632199e8a090543532536. 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/HKE672400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff95f23c67958e63c09839ee320fb02feac86917d0369bb868b6f274b9b5c24c. 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/QZZ972340080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434e0dbd0e29f12e4045760e18ef3989d857a1764d3ed200a48c8496e4ac119c. 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/HKG732261929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9baa33f9e12dfc73b5d6a875248d3c62a4b1fd7633ac87210f22aef178610b. 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/CNUM72100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4d8482fc46841cae8394bcf19e0974eada1cbb49b4e4fffbcec6b28c14c71b. 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/CNZ502200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a11d7f38014657587268f09128e8a2fe5200fdded34269df42ff8dff8191611. 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/CNZ842200657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadad4d381b0d42bbf0adb8c47421773b18715d25c09ddb426acf0922e4b4e2a. 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/CNZ842200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6790e759bd6f9115617902af29950f978f8f3490e9d2258a9646f5bab904b3. 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/CNZ842200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e103bd1bad485aa4ab87c4fe75123496f4c0a18bfa1ee361b6e12174cb25b6. 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/CNZ842200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170e3ff9073fb8035578ac2b9c2eb0175307fc87e747b40184db0df5fd90d3b5. 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/TWU712002152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54c54a3127543fcab26c15353b2dde32d16ab6a104c1350feef2a8392e32829. 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/TWU712002155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071f0b4c476544ea0eaf204c45dda20d075953b101ecaf57a42cd835db2affc. 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/CNUM72300085.