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 0x36cb8c684607e2047f7e4f596611217afb441edb79978687ab4cacb66a594e1a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73e3839b-e6d9-442d-8800-e8223aeb339e.json and https://artists.proofprofile.net/proofs/artist/73e3839b-e6d9-442d-8800-e8223aeb339e.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 0xba4314bc093f793c0e49a63e2044ea3ebef4f9fdb3b17bd2c1273e08640278d3. 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/US8JA2430001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c99ec7e7591fb3077c9369dcadab09f3110168a4bb8bac4fe49b8a1f3627dd. 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/US8JA2430006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6316acd4ee270b461897bb5c467a5ad8551f435da0ebdf33d2dab29251c86. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US8JA2331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc732fe4ede8aebbe173ad869a33e92fa739cdc04363587ec7cc8c10f9fd67d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US8JA2331002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634525d201db854e733ebfae8b5ab0d91c9d7b8e0bf7db9f538da42cd308a43. 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/US8JA2331003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbac7d2064d0edbc5b1c06d6a4ed3c3186e28e87467cd2d6a9f04449ed077f4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US8JA2331004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94e99cd49e7eb8b8af202831ce4793fc87e0044d77e6705e7a674461581b783. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US8JA2331005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae55165b26fca105cc5bd736e47f4f2f4ee3bca70ad6234dde7a17e6bd1889c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US8JA2331007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7cadcdaee532c9e1c0aa493e7cbec3a9a27e8c43e3355bf8797004ae9a966. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US8JA2331008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7cadcdaee532c9e1c0aa493e7cbec3a9a27e8c43e3355bf8797004ae9a966. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US8JA2331008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1550e8067a7b5d6ad509bf318d58c0d6c131c7f0b36870adecd76443e81d79d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZHN91915790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d5429ef2b0b747d838e047064149b24f63e979ef2ac1f455bae6f54506a866. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHZ52248737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36fefbd37320ecba69f06a917245250076ae1e6810a7badf5a7bd4d8710546a. 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/QZHZ52248738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6021fb9535b3e67d6c72fd42fd99a252cec6f79d554581d570b6993fc0e572d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHZ52248744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81b37ebd44d394bd3e3d27c5d213ff669511598378c453e9777f6860e0a296. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHZ42108935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea93323c17b78784eabd3c0a135d0f4a8eaadb0d746f5b0309b5079161661c9. 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/QZHZ42108948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa178db46b699ebf4cdfa21d0c894e9eeef77772d5758894a41f3a1dc5889b2b7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHZ42108937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0a566db7da7971646a8ce678ae6f7157745e5faa595b699f872b6ac56c64f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZHZ42108938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36adef5b3338a334c6cfc99329324d72d76e9654c9b7f74e8cd615c5f21d62f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZHZ42108945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d696e226fe8e9de7434f712d19b5ffdee5cd8cc29848717bc21b59b9de9e3e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZHZ42108946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443edb8c79a69eedf65e602f695be513184f71753718b419537d12750efd129a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHNB2275749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f3b2b6bf7d258a3db1fb26484c6d308b321f41aead84d9b870f6ba07b59853. 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/QZHN91934260.
The Christmas Revels: Music from the George & Dragon Inn (Live)