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 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 0x2d9f99f4ba560a703acabd2db8139b6d7a286354e9c80f78cd495e653b66b897. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07c7df32-9e62-4453-a854-4566706c4092.json and https://artists.proofprofile.net/proofs/artist/07c7df32-9e62-4453-a854-4566706c4092.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 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 0x24a89a1d0490525f54be7af9180830bcd264567690ddfc2ee33db187d3f43511. 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/QM6P42362926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce40054439a43775e32e7ef183dda5c792cb50d0dbbf35f169d1f803b3c755b4. 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/GB8KE2150735.
Everything (feat. Eden) - Bladerunner Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68931cbb1a1ab1f3712490cf4a3c6283868570545d3776687b319c7a08bba9c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB8KE2150736.
Everything (feat. Eden) - Bladerunner Dirty Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba976669db071118e90fd4682f4b61889922f553a785065a7e249141212c995. 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/GB8KE2150737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca054d13579c390fc1d3999d2f7a61658c9463ec75aa9e4b5fae0e1e90fda8dd. 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/GBKQU2442991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9760e86fe6ff2b58b3958882347d7e328ca5bfcca0c4ac1b52e9afef94587f. 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/GBKQU2442992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad72fc0ca5ccf48dd4527a107d39ec641d77364a58f41609d81a10a6f3faec99. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMFME2208190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377d6953bc86ea9733518b67bbb0acd8f984acb98a8847c70d0ed075a82dffd. 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/QMDA62226677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c8cc460bd734a27026c299f078bc219399eda6136296fcd86798e926fb474. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARL2400986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcad921d7a4ea12954cabbf4191599fd4c224ab9ba353df19c10067c9619ef. 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/GBCJY2000329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27cc43654d8a1873a6dea1c5b64887ab83277dd80eca305abde8a32bc032e2e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBCJY2000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ad001a9325feaf4bfe2077ea2f40018f869d36612185099ef5fe62b646ba6. 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/GBCJY2000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ec9cba6c6655208305fb2bb621240bcd831740596e2b3df8adab8f975a6a93. 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/GBCJY2000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc638c17fa5cffd78b9c5ec40acb8529cdb03c417b304af5a11ba4a51bde0e04. 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/GBCJY2000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d09faab61c08818b97f945a72619f79e74dd33617413e39a4332a679289981e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBCJY2000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadca9795f38061ec2e1f38d93e15093f154be7ee46a932fdde8ae90802cde0f2. 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/GBCJY2000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15d5d93eef4abb3afea3e88f1e9900d96919e311d92759b18e146ba8a25363. 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/GBCJY2000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585a4ba8062d2f0d1151a37757ce74568779ed11faf9da01b31c14c6bc68517. 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/GBCJY2000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd7730c7ad197548759460baf3fcd7727b59bb3d41c11c7e78c79070b9f85d3. 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/GBCJY2000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d9128166e91170e77dfb21b27638f981e32c0bbac95f17e465edbad1ba1b4b. 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/GBCJY2000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496b52cb3c3224211e101e43853092b97ac195daaac40333a1ea4bd48c61f88. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBCJY2000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbe1c51842fe0b948c93dac0522e70884dc6d3829799bfc23031ae87ff19a61. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBCJY2000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546c6c87a6fbbce9a73e78e6e93d983e1aa549897acab7f6a9281f7262c51b9c. 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/GBCJY2000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd166ea6ce9f1cf57113717372edd7ac574836e8ba72250860795a41a7d21522e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBCJY2000347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3854c04df5167e831cf5e437c82b588a88efd86d68ca4996d8a69ce8856cff13. 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/GBCJY2000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a502d738e1af2ed51a82451c7eb2a1d110f6e34761d6f2ab2f851671dd51e. 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/GBCJY2000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9268e9761296cd11d6c5585cd66fc6c5df0148e1447a89b2aa6baf7231f37b25. 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/GBCJY2000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb6325ce2c535a28b8ee11bc66358399fd6d83b0e7966787feb6a190d3e43d1. 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/GBCJY2000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845b62ea1f9ba246d6f75d402f3c219de59856d9c2e7ac33baec541d96390484. 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/GBCJY2000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a49d312b8a668c22293637ab35afdddc5e9134fdd1438a445c885f75a16301. 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/GBCJY2000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476732104a8b344ddbff60ad4342b4f115117f55106d8caa5192966e103869f. 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/GBCJY2000354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afa07f29a93bdd1241953c18c42528dfbfcaf540b67952160ab55ced297a6e2. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/GBCJY2000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fda86f8bf8d5fcb4f40b9418bc1d88dfd8f693ee5daaa1f9061bb0535e1b25. 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/GBCJY2000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ab5e8faf4d50ff49949d76bc6570f4a7aaefd1075dacb379c4126f0282e63f. 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/GBCJY2000357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571051de08411009ab8ea0da528bef7ea5e39e521ba985eccad53c9a860143db. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBCJY2000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd40ac0269809cb7960f62b079c07ad14309bd7f8c40f5477313844b71b6b2c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBCJY2000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86708088d81f1430b0cf5b42ddaea7144bff38d0c067fb4b756957cc6e5e488f. 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/GBCJY2000360.
Everything (feat. EDEN) [Bladerunner Vocal Mix] - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d0bfdb4fa2c95f4b1ca7f4aec4f037f99c0053849dadc44e6f6c12fb317f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US38Y2433688.