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 0x4b610637ac617380850665a7421eee06f9cb15acbf906f87d726d3e895b9c10a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9cff634-4a78-4517-b982-987c95d7fc36.json and https://artists.proofprofile.net/proofs/artist/e9cff634-4a78-4517-b982-987c95d7fc36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Destination: The End of an Era for a Leading Folk Music Label (Fellside Recordings 1976-2018)
Folk Festival: A Celebration of Music Recorded at the Sidmouth International Festival
I Wonder What Is Keeping My True Love This Night
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 0xc3186110d490eae50d082a53554f9dd831ce8709c509fa64031fff64d94512a4. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GB7VZ1200019.
There Ain't No Sweet Man That's Worth the Salt of My Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd1afec2dfedb0e98b1b94b22efc0798bd1ed22b66d4e3ea8ee93878842eb5. 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/GB7VZ1200002.
An Evening with Nancy Kerr & James Fagan (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5e3052ebe75a7412d7560c74f0ae481ade3f8ef0dac406d0d0c8ae4cfa1bf. 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/UK7671900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d7975b89273fff1c01e01a94fabff19be8a713f4f8af2d95d5fa57870214a3. 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/UK7671900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e0be0617ebeee909e9ddc5643cdcd10a879c8c3593b16934b066757114c385. 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/UK7671900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d5f7e4d839f43d7789d0bc80ae7948fa3c807af2ecd3082a94b413ca00804. 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/UK7671900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6af6314e6d3951e0dfd897919cc0e7c18aa55aa44ef2bbb5e7ee5b046e53ab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UK7671900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8bf973847151dda29798410caebe339067aa5f8355a7f26a4960e048886cf. 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/UK7671900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0c4f4d3e25dfcccafdcc5b6b2c2e1e1a864e61daffe22c251d3e9fb36b570. 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/UK7671900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a8ca85601171d5a272488ca90eabca7c2d58411cbcc274625f3f71464f6e5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UK7671900003.
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 0xc3f8750db0c01503fbc866334f42702ff352858a7f8f95852ebda0cb9b43e098. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UK7671900005.
Sir John Fenwick / Nancy Taylor's / The Pearl Wedding - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf556c3223515c5397dceb85c5bdea5d7c1b9f7d2455f163ab257c2de3ed8f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UK7671900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271447613e10cafad6490d910c940ec0152cbed7d47562a00d2284d7e8cbc82. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UK7671900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d45f9b1964db334b99096c8e585c85b50f25e0f4d38526fe640ad941d69b364. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/UK7671900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce5251f0774461dc4c050adb9a26ac0187ea723f08fe914a40218f69eecc42. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UK7671900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f537cf3e5bc7c359231bcd41794fbc5e4b017168f9614086c1f839ed6d487c. 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/UK7671900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb5193f29cbd1ba890029a1feab0dbcf1478e5dec2229a1a0af5460af242ba. 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/GBULX1000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa270a66b68c9c1a47fb5f3369deb604803a35b4e257eca1543cc45e6aac04e. 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/GBULX1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aa0e6d42a922d305bc73e27f3e784603a5e9b7f1a63e3a09e7aec58437cf79. 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/GBULX1000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad43025204664bc9a45514ef83e214489c9b98494461b5387cdb00f1d3f59ab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBULX1000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da812d4fca4c9b3f219c452f4b85fdb3d5f656f3589f711b6eae41f279fa927. 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/GBULX1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f00bce598326d9686f9262780bab5322a92c5828c7a38582810aece67fb141f. 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/GBULX1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0379ab8d1d7ebc4205c752f3a50dbeb4b8c4d930866910b95972fe73c969ac33. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBULX1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c785d796f1446d2989c71242f8043a7681b2e0a6daffe0d8afb6b1b6bff149. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBULX1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1b8eb01e2310b56e83ac02d4cda40d8036f96e65a1d385ad37853efa08404. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBULX1000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ddb11b64b0ccd7e292be4158e53e581cd89af6d1e83115e36de4ae4267990. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBULX1000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2180e4ec1d70dbcb90206d5ca2fa5f960fcfd3cc7a4c4befab9dd1b2197f76f0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBBAD9901196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb8e3bcd7d9479bf996b30a321876cdf5041391ca9491ee93d056127e66070. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBBAD9901191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe98c018d8cacd1969f815f62a045b70d0bfe64775188c992f8aaf0ce59d7779. 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/GBBAD9500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b670d07b938733f83db080aeb6db64b93b8c4b7104c38bc03784d4e164420d. 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/GBBAD0200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc502259c3b635c9f85b0649af893e21bb1a6145294e82bc3a5cf97d4663aa0cb. 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/GBBAD0200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533b37bca11426e45e62715f6ed6b551904066491deec982ec261ea3f87eb26. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBBAD0200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259c53cba917b98a0436f61fbf01a32412dfc1b0dc0e2ff8b7937c245f913bc4. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBBAD0200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fe4858ac4d5113d44aa9326c6cf84122a1e50b609aeb3e4c20287fb78ac51c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBBAD0200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04755edbe164e9d8785443c4c3e81bde8a63c2b237c1a3cf7850d90f5584ea7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBBAD0200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2865f5d065a92e46eae080ca9338eb706a7dd9e85d9bee574e7b1ff1ddc9a5. 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/GBBAD0300117.