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 0x854e6f0f7b5c9f8ff026273460e843ce724e8930cced8ad4cf2bd49b36e83c2e. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9e0168f-2652-47d3-a167-500ed3488c6d.json and https://artists.proofprofile.net/proofs/artist/d9e0168f-2652-47d3-a167-500ed3488c6d.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 0x33e77afd45d0719904f93452a42e2147008fdcd4d1ee3ffb849ffd80f4bc18a6. 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/QMBZ92352911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd512309d6c01097544a3392e953473a1634b220cb62ab9280179bca69a1d4fc. 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/QMBZ92352915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414449f3571b5aab83b6a48bc19046ea462681ad51d55ea0e3514f44e007da9e. 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/QMBZ92352918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74cd620958de1dce48668e44f6e7d5911ebe55b94e85e145652da5daf4672f3. 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/QMBZ92352922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10f90015a789cf7da54a50cdb48339ffda7056ff29e167bc0425556764286b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:28Z), 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/QMBZ92352920.
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 0x424a648f073d1178d5197fbc9c4db56931d5e324d98039c355261a42ab73d6a6. 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/QMBZ92352912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed074497d31b4500b89be6617bedabf9d6103dd7135ac573ed29742b577ed45a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMBZ92352913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d961696d5da1aa1147b9a98a1bf5f0fa00f56b3b6499f4d2ac669510f54c3. 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/QMBZ92352916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63a8f5fbbdc01f3e2f8687e78acb548f099e613f0803c535c62bc6eb7a7347c. 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/QMBZ92352917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf4aaa1a4b98721cd59287f0079372099cc98aae1b4db8b044f76643f5daeb9. 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/QMBZ92352919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d284cff950661dd70d6a4d9e30d42b4d956929501ee295ddbf871e5127a88. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QMBZ92352921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf62301a8ec2306709c6606ec16ce82c46d0a0c185142c777b1ee37da99e889e. 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/QMZNK1700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7119d1ce6defc58b6211c04c10dd0655b64dcc429b601c3a8aed8f806b82186. 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/QMZNK1700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a92e9148fe68740396edaabc9e3c275445391e57f415f187245e2ba3cc465e0. 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/QMZNK1700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6175e3b7805663fa77a0534fe8d98b816265d3a85febb397c84a91bd66a08105. 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/QMZNK1700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd243a4f892c590a518fe4e6754040fb73af5fa347e465e7c8fe2723f794a35d. 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/QMZNK1700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c9d3b9333bbc9acbe03a7c35092a1c08578f4ba22217398604c591a356c3db. 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/QMZNK1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61deac62a693418dc1f18adb96dc3f0bb6bedf1a7d226d6bfee57259c8ee8165. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QMZNK1700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae286fe78dbdb48f7f5ca806d3924f648664d539ca3483996f8ae9dbf57aeced. 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/QMZNK1700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47d42c139587e30cb90a8ddb34f18ffdd30fc2570fa408b3a03c1304e77d0d1. 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/USERN1007765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2757fb7d75af09df6030cbab642c94ce94a10631359f5264ab50772a41f7028. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:47:18Z), 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/USERN1007766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25158cce75c8365f5536bd2ec4d5c8c794d2fabcaa003d5f09b30e50579f59eb. 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/USERN1007771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bc6ebdec0290a80ef840342f364179cf7a462e0d3769c146818ecb5d95214b. 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/USERN1007772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092f73d8148772b1ded9cbc46c63ffb2df2bc7ce184873bd9ea791764a174ed. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USERN1007767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6733061a239861f44bb586125a960c23346630aeb98e7be6a8df90ba18f0a562. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USERN1007768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfe54a234375fdd88ee0cb8b7ac01c057c5920f99e1ad57772ec0773e200761. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USERN1007769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a649bb920fa0d8379e51af7f0f7d2f895704a75dff2f4b57234a8aa93aeeef1. 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/USERN1007770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b0c575a7cddbd1829b3e76dba8618f1a7f51189fc0079f02486e25047c195. 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/USERN1007773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e2f197c28760330bdfabb9a9757c4aa1d72f0ff573f113847bb40551dd9f3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USI4R0710822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aff6f0f5cffbaf82943fc1ef511d27392297ca6b4b6a5733ff1f4a424c6b0b. 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/USI4R0710823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f56510ee15640b312c09f9c38df88eeae8f40739408c90f3f29db87d10ba3. 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/USI4R0710824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87392e7c1e49767b1c7e28cf41d38c9fe4a34a2102c235a10c72673c1e754d33. 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/USI4R0710825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9756cc92a2310ac609127594c4294d48c419972c47bf7e25ff65da31e3ef60. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USI4R0710826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426fca3b63608db97cf6104a024babe965d6b498e3d548f36a829e8446b6082. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USI4R0710827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536df20b806ee583255d55eee2a5c5af82c30372ded1e3d7b08abef98f5dcaca. 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/USI4R0710828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85252b49202b28155fd4c8395e9362fea40ad5f424891f8af8edc396073f80c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USI4R0710830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b06ad0a81ff8556912e7be81fba500d09474f4e0132de095dc3a590fcec817. 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/USI4R0710829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b6b6c97d3e8986e1a0d89f4256df8b6c598b89b439eb30a65eef49b9c36066. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USI4R0710831.
Bullsheep Detector - Welsh Punk Compilation 1980-84
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61b5c4e4026654ee6e424dbf9549805ea860e6c347e8e1429d299d18237f913. 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/GB46L1202003.