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 0x3971189e7d4623046f254ca8a78286c2d57cb3ca74d028445d6431de70379cf3. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31d7c4ef-c80d-41cc-a2af-0e088cc1b385.json and https://artists.proofprofile.net/proofs/artist/31d7c4ef-c80d-41cc-a2af-0e088cc1b385.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 0x32832cf6dfeb39bd54139f86a40b5e5140ad83c2b7373fa95e2afdc1232a734c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HUA251739103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601136997ba866d85c9bfef139944ac4d90a121495e67b2b5bff45f93d06c6a. 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/HUA251739106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a9b5f35cc4e436b48c369edfbe2e1da8fb9675d5cfa793c91ef8ab8a25d23. 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/HUA251739108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003293515e7006d954794e9d80ee2f966351dfbe053478624a34629dbda4a53b. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/HUA251739109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa873a39816fe871db7b04aa65e8f258e0e9d7d7c9c511543e991ed4cb687b5f2. 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/HUA251743702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb868818f5d9f4dc272673a90c96c29635e3afb5dad05c2010966d3122d7f1c58. 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/HUA251743707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481a601cfd365cf21d1caab53cb6ca5f0e6c80c9ce08dccb9b5b8141929b043f. 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/HUA251743708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966f4988b2962c573c896347143d9714cc07e65f83b11b68784ba1dd3da11ded. 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/HUA251743701.
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 0xbce86515839ea62e96da85f0239ea046f033d711fcf909861a2987861b05cc28. 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/HUA251743703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a8d91c7cb46fb3770300155ceda7e12cbae309d1207585b1073de1591b8a26. 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/HUA251743704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c4de9e8b183cce060781711a14a1a50e51ae5ff13bb063b7e301e213a15d1d. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/HUA251743705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0d8218502a82951595633644855b1d7cbcbd9a002da3c3315b0a914edfddf5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/HUA251743706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7c0610d7ba488f9c0eb13f0d9279c7b0791c8c863265d6ab0c2c250ba10a63. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HUA251743710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c23f0c06e2fc617582493bec37f31307d757c94ae0425083c710b0ea5b6339. 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/HUA251743711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e974481ff81ccd8beb0e29b2870ae72f5cfe7103baaac90caf34ff7ff6b5f2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/HUA251743712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b037f1b8a479950b8a0a99c040dc4b5705346b01e8df827dfd200299df0f20. 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/HUA251743713.
Koncz Zsuzsa összes nagylemeze: Szerelem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6c9ef2caf89b7edfa87246bb8db1e0ccfe0325ac898b1e572baf20d3c2814. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA257110201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a118a3d259f5508d12194c27c2ebe88fba9b397b925c36dac6fcb5b8c5d5ed. 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/HUA257110202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee903235eb02b3f332ccf3255b85346108171e3d4b115cb014338bc6a4cfbdc. 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/HUA257110203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482b42d4cf5c1e43df6a8fa5507894821087705f93ece036552414a80570ed2d. 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/HUA257110204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee4c2ca7e0b2313448306e1580d7735e9ee22198b8eb4466a4af15d0f7d94b8. 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/HUA257110206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56f342472f82168199a63936ba92a5f3f87138021cc7319db842a1a80e3d07. 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/HUA257110207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f7646b73b34c1b81a74bff719e721ade7d541df9037f275fe312c94fc50898. 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/HUA257110208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b23c3ddb1b6f9b60c5fa61a1402908343e779989088fda38ebcd15fc65a7716. 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/HUA257110209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb46d937c0617e9c51cdc2d0757e044ca9fa0bc26ec084be261b48b40647042. 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/HUA257110210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407f616a75c2ca15f991748c433b6562daac8edf529cf9a581a00e980f08042f. 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/HUA257110211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd26d27cdfb3d9b5fa4015f7790311062902fbe90255774778bf2fe4670e0043. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/HUA257110205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10b66b6cf657d23ecebef49911beb50b7b1df15d1d399e499f0cf3c04eb09b. 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/HUA257110212.
Velvet Revolutions: Psychedelic Rock From The Eastern Bloc, Vol. 2 1968-1971
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28424623992fac31fcbdfa004660c9db4237845ba90ee18a09e5112ecd52030. 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/CYRLD1501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288139fc84e66b6a0e6d20c70274e1dbd10f914c75a9864f5649aad79ab6c045. 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/CYRLD1501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ac443e1346bd93e83bfee3d034540ef63e96f1472239c3ab64d869e0c6216. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CYRLD1501225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88376a834997b4bab9cfd4b23a905d1eb3a77c9ae8f6e76d65ecbbb00a581ce. 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/ITS581600731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62c025097ff173aa3bf905df4f54a98f0387e189b0d03c9556a774ce716652. 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/ITS581700725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dbc46fef0e2840a13a266ccaaf4791ce436a32e977b2eaaf8771d418d71973. 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/ITS581806130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d8b37af91fb48f7e74704896862d5506bdc295218b4993603d078d2acee8ee. 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/ITS581806134.
Velvet Revolutions: Psychedelic Rock From The Eastern Bloc, 1968-1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b02412d7ec53b613baa30efa4b7fbf7c66b4005fec7c53c17d59e370d9a08f6. 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/CYRLD1500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd29472747d62879c3545e989ef173626a138e34d89418aae6de67b860b5d82. 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/CYRLD1500151.
Black Line, Vol. 10: Essential Minimal Tech Club House Tracks
Black Line, Vol. 6: Essential Fashion Club House Tracks
Black Line, Vol. 7: Essential Electro Club House Tracks
Black Line, Vol. 3: Essential Dance Club House Tracks