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 0x0f31c22532200fc453c4f5ead52848d39b9f47d4fa9f6be8d6efa8acd89dfad7. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f188a28c-966f-40cd-9f22-a6c6332a5c48.json and https://artists.proofprofile.net/proofs/artist/f188a28c-966f-40cd-9f22-a6c6332a5c48.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 0xa4748f8ac4f44a2ca3d603849343879f4f2e420e7ce89799fa45112e74213847. 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/QMBZ91386153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093900df7dca59b19e0979d87600801e4b5f1b0926e9f9160888293db13ea6ee. 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/QMBZ91386155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ce594e98bad95806267d84efabe4ea31afb59007f330b4ed75566b25c332d9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMBZ91386150.
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 0xc383bcdd09cd3757d9118c64516d9519447958680e9affaa0aea0006f3e6291e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMBZ91386151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62ddb3586bfd4267a87eea4aca223c786c64fc5611c6dac1ce1eec0ad4604a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMBZ91386154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec498e520be444862e56936a064ad2f3a9dfed025b8e296273f4a04ff4a34650. 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/GBKPL1809608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a66b429dc32918f0e31d35acd18e0c8800f1169a84900a12feaeba454429ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:10:52Z), 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/GBKPL1809610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0a4ba9787cd15fd15bd2512af8cb08e60951a7fde88926740cef3cd6d87aa. 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/GBKPL1809611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79268d99a05cdaa2c261d8cf97753c2d1079dbc0743d09c13ebda129456ba14. 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/GBKPL1809617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4594c78612680765e8ceec21d6e41995438b855e14b6a721c14fc9329e15a91f. 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/GBKPL1809612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2202467d5fd758ddf2dcb3a26fa09cfd5751a36c2f39382a9be9910d059b2ed. 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/GBKPL1809618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956df1ef30e5960e69669510ea5822272116e1749571bddffe3da1bbad396466. 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/GBKPL1809615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b787d5aa84054ad7fec3a0a7a74ec5b20c0b8a877382b2352487242e21086. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBKPL1809609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ce8f643d80bef0681ab127cc5947a5f1d19b38c36815687b23ec7b1fa915c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBKPL1809613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b96535f3694af467e25399f55235594a5fd5a7b6777c5e5613ec4fc2f9719. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKPL1809619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3377762abf4d27cc14e4044cf117c9e83cf40fd6bcb5ad27b0775cfa98cc0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBKPL1809614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44749ff85c4a7980139e608bba16448f3149383297ed5bd0d54dbc03182f138e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKPL1809616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50369c26198611b2ac1fa3f72a47901dc6a02654f76d1ebd1d84d003b8cf56c3. 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/QMBZ91391343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39707b633cc2002f83d70c0048ddf677c08893e4ccfde91914b92ca1462bd7f5. 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/QMBZ91391344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc98aa4217e4d92bc7ac31679788761f715c8e2683ca1b653e43e07aa1f782a4. 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/QMBZ91391347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67055f610438a8713ff4bf9e66128299f2378a1005e2a5f431a474a147ebbfc2. 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/QMBZ91391351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e49d0c45261cdc2c8021b00af57873bed77fa343855528bd55582b3c917eedd. 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/QMBZ91391352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f8ee9cb8cb133b72967b519c45d252710772212ca89a5f5eff59e88ed3402f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QMBZ91391341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e97fe7f577196fa2bd05ddf39245820800e897518dd1bc762300937adf792b. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QMBZ91391342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54abf7754819dfa702cc8bd12455f171a764b9737d4bfac4999bc7801b450dce. 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/QMBZ91391345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ceb9e1f31b021d1ba0d79331ec71bc7c4c4f21dcb241d7077dbef10cbb0062. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMBZ91391346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90956c8d2db558d9ee3f5a5c558c803d349fe80fefeed71c085cf20a1641708. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMBZ91391348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3ba6dfebb67c1785e176fab3227492ebbaee1ab8576d18e03b86f0fb9dd883. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMBZ91391349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98bfed872ae0a510f8a539417d8e98c2318c5e6b6c9bb9b661c8895a70ff6e4. 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/GBACC0904301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e95b644257fb126346a0d976e4676bc456f821ba912043abee02e95df3b2ef. 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/GBACC0904302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f5ca665d330ead90b34d7360eb629d040e2bca80c28c5e25223d2453763d4. 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/GBACC0904303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdebde53c52d6e9d7cac57fd0e6926f9db01dce0a31285a7c6e0cf9067d7e48. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBACC0904304.
20th Aniversary: The Very Best of Z Records, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e1a41735049fbf1aad055d1c7462c109434aa42ce616678db1959117f242d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKPL1364980.
It's A London Ting (Underground Edition)