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 0x2537689afee02b1b1516393329df7bdef24212912fe6c448a0f62a9f1f1558c5. 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/53a3b851-046e-43ec-a6c7-6558e4a2c41e.json and https://artists.proofprofile.net/proofs/artist/53a3b851-046e-43ec-a6c7-6558e4a2c41e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cryogenic Presents The Offensive Rage Album: Harder Dan Je Moeder
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 0xbd281755b72948b7bc8621118d97b575c1ca418e5eb296841def98cd1a668cf2. 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/NLS161802202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dcc5302898587f3d1fba5467e17de63fa6ab41fbb9a6fa7f4e8e34bf892f2f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLS161802516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c128130a781fb5b378d3b8a14d107a7dd75bb634806b501b409e3038fcea6a. 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/NLS161802453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a0bd615890972e1ad2455001b87bb84ec38be899851425d5110c8eaac6bdd7. 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/NLS161802133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a556174d54f023326f6892060ed5ad72146ebb2fb4385d56bad75caa38cf6. 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/NLS161802519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dee822035686cc9a0e1a95839dfad4d1ad260ae4cda84eb5e0eb6c0f776da4. 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/NLS161802166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd1d7202664272ca4cdd335a4204bb2d980141719412efd4e217537ae4fcc98. 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/NLS161802520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2a703399c9f58f0a91f20275f7393a14bb646c9af65fde1cf11b40301c657c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLS161802397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe112a398874dedc230827967f34cbb7cabf65bd7c9b4572f7967c5229f58d2b. 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/NLS161802521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6e6fae0dd0c0efad68ac9e5c8fdc7ac34f02be24b54eaa90ed5a1cff4e91f7. 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/NLS161802522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8737eeee921cda066ed0f5e30f5db965df0a7f0bfcb94b00a99dccdb6648ea70. 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/NLS161802523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f30264208186b958c3c53248e46cbbfcc833c94c32c71c07fc6156dd134255f. 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/NLS161802525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c44fb847ad05f6899026aa5e34f48b14b2777ce4601ae96619fe1e6d06a5b0. 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/NLS161802526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca99bf2f2d202fc2d56feb02634c416fbfd588398835c8c25dc4f5292dc5947. 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/NLS161801384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e6f65f6bc4b02b9c24db37bbd621c3224241b8a20173bacd0449e1646cd310. 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/NLS161801980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79fef6fc9e365bd798578c4d6ec6df01486aa275be2ecba96c272fbbffc27f4. 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/NLS161802136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d1fe9fb8e707d714666b0020ee9c4d11fab38a41d72fc9ef856db361b566d3. 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/NLS161802531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247c061c36e8b2cb43c48b2b2faee13d996a43820e27a7f83a85846c2d7f1bd. 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/NLS161802087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e55f929323c6dc6c6db04fa0dd78326c9ed07ab80e1dae2f36846c013adc04. 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/NLS161802533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e893a9e64cd53a35973a1487fe0afab461cf1b9508433b47af869bd986911c2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLS161802518.
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 0xe8b1ece3e799412e561834ecdb6f3b7240788c973ba936ba4650dc3fb6bb6d23. 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/BEFWX2010806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1524f3f2900e0aa2fae821914e6d4ac1a0f9df681f24f5ad63a844711908d6. 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/NLFL72100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62174fbe301348d511e3699a01b617a7c97387fa023d2ebca00efa22c07b2f3. 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/BEFWX1909701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257a43fb6c3e4a54dd8518a6da512e944a909480bd3626724fb2a9a50efed81. 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/BEFWX1909702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f385f8c5d976e2117c04d99e165bc6d08dd43a90950a5eafbaa72b8912029. 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/BEFWX1909706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bca60e67a6c8e1752609a69f7f2e99e1144785bda643ea67ecfa528467dce83. 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/BEFWX1909717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7af38452050d97397a2c442ed26d177eb799bf7785e51a6202443e2e9fbec6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYX2089717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4497f6b22fa28d04f6fae8e841f54bf544f1bb829e9f4aef03207bf293dc01b8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYX2089718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c937dbfe81d548e8e6361f110bb56d4e67fb0cf230962a2dbc8e691249e6fb. 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/QZFYX2089719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9c62710ccd7578e00b9175f311ee59f5c24aeac4a614c534315f1ae8e8ed16. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYX2089720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf699a817513c221a21ddedede78d630dcc508ee7a467c2f0f0bead75362a412a. 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/BEFWX2011601.
Footworxx 16 Years (Festival Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cb33deb7bd03bd8e2b9fe61e1672e903bf245664389c40623da2b8375bbb62. 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/BEFWX1909808.