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 0x424cbb876b09bf18a6268dfc01dce246a682a88bcd43183636b2495c5f1ed1d8. 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/43456da2-7312-4a28-a587-13c5a4351539.json and https://artists.proofprofile.net/proofs/artist/43456da2-7312-4a28-a587-13c5a4351539.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 0xf910997614f87d2f50ce034ae1f8fae6276d0a658a4534fccf18a7e96d2968e5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:18Z), 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/QZS8H2100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b4bf18bc952e7c9e354780fc1666160fb19e4464e4a47e70bb5f7952f2fa4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZS8H2102981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749a8304895d3f8ded31daf5470cb18e11e7f51e1c157c907c57169d35caef6c. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:57Z), 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/QZS8H2103065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf700420c1e5aeda1680b53953451c74a38382ae6bf453503cf2bbb1a7f3bc8fe. 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/QZS8H2103073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0829c2711ec1d8e80ef3428b0ccd9b87f5bd6f6555c01a6f7f792bdefcd88202. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZS8H2103076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49631f3b02789a7842e148317f8eba420af7c2749586eda5bce2e2c474acf391. 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/QZS8H2103050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c1bc219804d70ebdff03429757761fdc6b59dd4090362e9a2b3146bf2927ec. 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/QZS8H2103056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c05e6f45a0725af02b5d766672907e64b19ba0186e3414c6f9eeb6804c6d596. 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/QZS8H2103045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896a6183d67b7202e9b800fb92ea26737ae297d78b808c368bfc6091a61c871b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:44Z), 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/QZS8H2103047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf700420c1e5aeda1680b53953451c74a38382ae6bf453503cf2bbb1a7f3bc8fe. 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/QZS8H2103073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f604fd0c2917b9d535bf2b9f32827f35e852e6978af398b6c2906c451e46fba. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:35Z), 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/QZS8H2103078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c869026e6eee1695864a37c7ce305dab97e1002a0cb2d0f67bd8af1e97bf353. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZS8H2103055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e68473c9279b9d0412fcb00f1b71f64fa02101ec2a83884930486c3558e20a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZS8H2102743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9692606e83cbd06cae6b1fe3556ef0c9eab3682c402644d0daf370c0dc000b8. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZS8H2111058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e6840b4d98fbcadd56f03ade4b1d4ac45dd1e9b13b3724624cd660354c7ae. 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/QZS8H2118051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f415ef679b4d94425fe098b5ed01c5d25eeb3525ab0bfaee9b594ae0eab1ba6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZS8H2122299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab38a4063b899c5d559a6cf88be52df8270366104f04fbef11b1cc652e3715d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZS8H2122364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d00803b9f324c66ed6dcd237bf8a394df77f502a8695a38f72b6ba2319014e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZS8H2122418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4c6dabd93afa4443f1e377c685800925bfbf2932614be021279ab8681c216. 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/QT37Y2500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d2704e21f51ce5e1482cd25f639e1665a0b5d2d77a9b193ea9b0778234fe0. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWDW2568992.
Mutu Mai Basecha (Female Version Extended)