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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205225495ecd4e7491a9c70ee13bf8fa5b2eca5ce82570983ba84a23a5550a5. 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/d170471e-3e23-43d4-bb85-10a697ca8e8d.json and https://artists.proofprofile.net/proofs/artist/d170471e-3e23-43d4-bb85-10a697ca8e8d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedae0f91e4e1309c4da810bc277cd5b1aa675685a0a4a095d3262209147e8d08. 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/TWA450892105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4f691980726cea7471e2a1a28a3232682b17f0a946ae56128005cfc9e2003f. 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/TWA450263009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e6451fba2c4cf0bfdb3805008deebc87dfd499714ac175ef36dc3a2b79f890. 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/TWX351700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce7a841b64cb9f989652c0dda9b87261454d3594129fd1ab7a02eb523119700. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TWA459024502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf71622b1e36a490743e4990e399e2cc091c0444bab95ee75198866a11885c. 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/HKE050900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf893074bf22d63266b5de1fa26db5959365f35c6dbe29dbf21e0319f5617e4. 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/TWA459126003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ca0e87260e2bd85c9752bf4058b0a8c7704e07fbd91b3e0a4cd08156f0109. 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/FR2X42297077.
滾石年度最賣座專輯主打歌全紀錄：亂世佳人 vs 新好男人 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a7f82dce540d7da0921a32370324665a063b64b44ee7eab2dbc9acb17182c. 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/TWB879702501.
滾石年度最賣座專輯主打歌全紀錄 亂世佳人vs新好男人
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef903b5bd1c6a44c1673baa2c1c942add01e8a57cc0a59d1275a396002ec0a7. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FR2X41674805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cea61657c8cee1a041785a72d4d86f7fe6cde5a50a971f91dbc86444be8acd1. 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/TWB839547005.
滾石年度最賣座專輯主打歌全紀錄:亂世佳人 vs 新好男人 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d9041be2e51c9f540deeb6e30f2d2223d2b6ce8c3bd01f79b112ec79e753a5. 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/TWA511300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420f3a15428f7be626e58a0f336dd1b88b6829bf973d65da8848ba9582db940. 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/TWA511300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0937fb86d701ad729584370001f72d30ec9ed443cb0f46eb877d96a15378c4cc. 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/TWA459546201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c31e91bf80594d973c757e39c60b17543f9a3577559d8decfed29f631449bf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWA459546205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef7b47f1dfcb1c67a43c289aa477841812f2b0f644a2bfdb0727d495b3f5a46. 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/TWA459546208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb68e0c9ef3f85b81da8ef609148c1b265c0bbc072d36cb20788be08879952. 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/SGA038800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7645387e29e5d74fc95a1f2cb161a29b41416779c120b34aa87dc61427ff9323. 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/TWA459755702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ccb137f6d3be5acae45563119dfbb24060eefd8f4ba970c57e67bb79ea16cf. 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/TWA459755707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4c882fe0f76c686f6fc0f05427b0adbb2b42fffaaf01dc12011d211755002. 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/TWA459649902.