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 0xe4028faa1186edfc2317e870926bb075748fb9c8ba1dc540c9f90f5e5daa687d. 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/60c6cf12-d9e9-40f4-9f8a-7a1a341ac95e.json and https://artists.proofprofile.net/proofs/artist/60c6cf12-d9e9-40f4-9f8a-7a1a341ac95e.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 0x4974fe3b255a29eaa1fa5d167787c51cdbcd81b2c6d46e758fb69389cf83165e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEKE1883416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac574d469412673088b65d1da607c3243347a5a5da456c7a67975dccfb87aa63. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRB472000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbfe3f23252c9d324aa9b9ac41307b4359355081e6d6f58e2ecb7a345bd90c0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZEKE1927994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db2ce17d29e4aea32fc6e87c634f94c85530fd1bf883ae68eb06773fbb95b05. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZJ842000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410482cf08eba09c6fbd54c011ba7f9cfa2186ec363f1727decda3c60544c411. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZJ842000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a24af02cdf48e961ee9a96b5a8e717090a8b775b433638b97a0e197fe3820d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/KRB472001295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01600352ab44570d9d971a8f25e3dc248a5b6108695b81e02cdcda26c982bbf1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZF452002050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b077d30a738b98a6f1b91cd9f6888b0186692a12c3ddf7c97cd9535e73b4574. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KSA002101797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aea18f4064209e1bbf28ae109a4e68969d02d578dfc9a6e8d120953809d596. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KSA002200672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48968ce6515096991119fe28317c5fd9ecbb3196b6ed7ef99603b68fae1935cf. 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/KRB472201164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e963ba74924fd873ef12367f85910eac55790be1213194f94f1e543a852029f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:24:55Z), 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/KSA002201532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db4a016e9ac40d7374ce74613825347684968d5259705630df725fc8938ad36. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRB472300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd15a9e2c22f8824b7dacd1e467f3e18bfaf4f1a993c556784471e3a32401d. 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/KRB472301077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1087e69caccd1b21c3b965f59745931e861bd1a1a05afbcffd0a11bd2ae0461. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRB472301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2564e46224e863608cdc11a64d77e3d621315d30636a7f4407a04446900aaab5. 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/KRB472400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2808064e14ca5d229e7cf6419ed30bd5f323d83fa1e72a88e21edd7e61c9724. 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/KRB472400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6bde2eb3647cecf4b0f4eea3218a99bfe59c73d919bf2f6ef1c779193ddb88. 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/KRB472400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64648530fdc0124de8a01a3e0f57c31a3ba46e9e143b6ca374694b10aaa2bd8f. 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/USHM21880942.