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 0x1b91b4c701e6aa6839d5eac0173bf875ef83a9c8ddb1de76b9d6aebed0c44003. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3622bbe1-301c-4f5a-b368-00c47753c09f.json and https://artists.proofprofile.net/proofs/artist/3622bbe1-301c-4f5a-b368-00c47753c09f.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 0x40942ae48affc7946af2145429b1db3465d945d84a194a7bbf3b36cc78690de9. 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/NLB8R1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81078008b4be56853b93a28faa2615eff2a4476d2ab0267d430bc360a36f2c22. 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/DEUD92356279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b0e836684ae48d63ef8f802511e64f5f3a8d018e96afc98abaf9864af6347. 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/USA2P2314857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893b3597a7864ff1142571cd51365763b35a9c1a6548b587be50634bc12618c. 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/TCAGW2353010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea9485fc028ece169dfef072690c922f1f7295362a96607d4d4fd90f460d4bc. 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/NL5HJ2200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24794c0ebb1da1524baca93651022d12cd54cd80cf8efc054e478ce3ff43dd17. 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/USA2P2216237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2735632f427084a991472f01ed3e5d16f48e9b7ec9657317818131245f10dcd. 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/QM4TX2249987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037562a382ba9b83830a2dfbe33e50b81702dfa7a97a273b2d6c25f143555c27. 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/NLB8R1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b368e1573dc8ded0df69ca1b7db0bbf0c76b7caf6eb10331a343b8329658854. 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/NLB8R1900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93312ca6d648cdf27b42568b4c10ab13acc7588d9604d33b019e5af4b6b3834d. 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/NLB8R1900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08a26f3381ab04f518899d9c1763153107b741e6a61f15400f14b996e3aebe3. 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/NLRD52024523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa25f6287041a50c2e971db02237ac163d084bf91eb2c70c714b38337c6e3b68. 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/QMDA72127643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef66909dbac6699ca727385cdc98e58a5f11a189b9ea110a901c310d5e54a2. 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/NLRD52024514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5f1acf87bf0a1a2262b866a3d6f094b65a1919ba1d2481faca224f753c1fab. 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/QZNWT2188254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a26b28121361ec576c54e223d7722c034f5ddcc7f0bac0b4577a6db85d659a. 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/TCAFU2192109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce33091c7ba3f3132d5e7f5a695a2124529f44ade672ef5c4c3d760648cb7fc. 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/TCAFM2183504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb244d1f63c0dec459b01862b87cf9150691cd8883b2d79860ce5fb52c7c5197. 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/NLB8R1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c0ea3e0e4aaa8004c54e535b9293f4e50b1945f3fd42f2f87afaf803f2d1c. 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/QMFMF2024881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a740f6efcea490f81da953ed3ddc6cb5571773f1a6921ddcd4ec66d430bc52. 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/NLB8R1900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412af95e903d812d5b1da16ba7e2c0c81fbf2a905c217a7d9a70c10a959d9af0. 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/NLB8R1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4a3eed65591d6e8900a247e9cb02236d5137d8b4290be62716ab22c1e2f1c4. 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/TCAEU2088096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44660efb372d51e3709caa3d86046d4bd0fb6d3da09e3eb002fcbc3c2cb0e9f0. 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/TCAER2042466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec525b7b331886b5d66494ec016fbe8cbd28557fa830f7fdd83ea3f92c1a45. 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/NLB8R1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bcd851ed5174fb074646587c892b943eed1c1b556d4b8562587f364aef2284. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:51:34Z), 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/NLB8R1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8849ae7ffa226fe85093ff8ec0ebd29d782d618d539665a720ebdba9032df96. 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/NLZ541901714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8846be480b5e4fd9bd7607b4c8b0aab7c5fb41beb070e90c1babacb0d4f72ec. 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/TCAEB1964179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b1a4f179479a7ef5170f1ef716c10fe5eee9d541a3451239ac2cf3733d8f4f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCADN1880791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77000028a0572ecfa0b7eda789be2c5ab49e264cea98c6a18802130b37ed8a39. 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/TCADD1717482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e71710fe5e8ef11e3229c5071419fa497d61271cd11613d501f632a5a6b56c. 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/TCADD1738630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08a26f3381ab04f518899d9c1763153107b741e6a61f15400f14b996e3aebe3. 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/NLRD52024523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751377ac2b09d0906d6275e446a3c1bb7ad9867cdc770c3f81863e811403e00. 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/NLAM42100169.