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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 0x93335e795441f78e8b54af9a4e7b0a3329497ebcd8c6ab5e2e2e1aa174061056. 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/803ddbee-68ec-4506-8fd6-eb370d513351.json and https://artists.proofprofile.net/proofs/artist/803ddbee-68ec-4506-8fd6-eb370d513351.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 0x5af8bd1588a5e98c8287a7c109e841931a0f95ba1573c2b89095cda32389d541. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:25:18Z), 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/QZWFF2361852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d829e56b55bd7101296e7cf2b977bc9e973ea65173f18082a7ff6b4ed795e. 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/GBKQU2397952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d1e6d9f18af07121e241c1c98d6b82d2738d190ddf8751b942447f0e04667c. 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/GBKQU2390821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851b0975a2f69f40afe9b64776027f136bbc29172567651abd19ed505dd81fc8. 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/GBKQU2372017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cfb9a7618cd5b11e9b5e53244951fd3fd914a7031c0f8cd75ab98d8163c27e. 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/GBKQU2363951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61488c343b83d9fbafb0517ec3a8dfcb90154cf5bc4cf56ec557bbeaa4dc4aba. 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/GBKQU2355069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bcae6c5faf6d2ec9a03be41c6816939e0c56bb5b543855687bed9037fc7db0. 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/GBKQU2346103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c175d1239514b678e3d64acaea1720b8515cafccb17b2b53046f189d35336b8. 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/GBKQU2334115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947790ea47c291c8c938f498666ca252e0df12413d61238d3bb0882c22caeff. 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/GBKQU2324369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750785db1aeeb57bfedc6fb68ad4f1a1008770f7d8d0d6afb968b3b17c07632a. 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/GBKQU2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff478422bcd17c256dddd04d75eb7c40c6fed887eb686dcd6aaea67f4cb63ca. 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/GX38U2310183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b93c7f7c405610f92662337fad2e0c37b38bcdf115cb00d7a6682d04208220a. 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/QM6MZ2260119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ade38522306b97f2474c7b348f31cc9f7683abf111c48f5f48d3d8f2397c62. 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/QZDA72219200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba08fb5c126c516ac989dbac0da02fbe117d9a1662d96aba6bb01ec522fc421a. 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/QZPLS2194767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816a3b03192838ba19bce52d1c4f37b421bf46e4b2ce814cf71960a4d7dfeaeb. 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/GBWUL2146575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2527f0f575a65e03005c0c5bb781daec3375926748f494b0e040e22af4cc94c. 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/GBWUL2146576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edf459ada68694f31422be020b709e44db1d39fe26a599366404558d05874bd. 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/GBRKQ2199366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc7d7411c6f73d8803add0671f6c2196dca61c7bf151c59867c459802294942. 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/QZMEN2169241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f230d20683cd7458127e8b464a43abe2d25bc485125b623f1c2fda52f017889. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:38:07Z), 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/TCAFP2116325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f1d43eaa07b2a7ffb26246f4b273ca44fec47aada58a9b1caa33f99cc89226. 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/QZK6M2134630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea12b26119587b27672c0583d9eef4cd33d86366aa969b61f262b9a97d5eb1. 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/QZHNC2188698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e213e6a5ee195baa8d72abfa2789ebded83d495f102f92a0595d62621c1176. 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/QZDA62128460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978a6b049fa48910dd261b33b03d3ed23ac9611b7e50dc5280c754856779126. 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/QZFYZ2100884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3872f8f5589e4f5e20a536732dcb436d81c314063b4ad406bd94d6c06f257f. 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/QZNWX2088093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83defac0242dfcd99f7a9276ecdbc4aaf856d77c97aaf574706c70fe91a4a25. 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/GBSMU8751728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5f37c432153eba441f841a4090c47406536936b768c3bc9d9e02ed60ef188. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:55:40Z), 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/USDY41995886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf1810ad89db1baf64eed5429943d632908771b74b1ea1e525bceadc9e6626e. 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/GBKQU2405164.