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 0x3316a8d2f97a489b02393de60d0a0420b537ae3316ce341158dd5bb38715092d. 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/b2f06df8-d401-4c65-9879-38ba114583b4.json and https://artists.proofprofile.net/proofs/artist/b2f06df8-d401-4c65-9879-38ba114583b4.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 0xdbaffa3a3c820355d806909d2c2c83ef1f596e1b36ab7905c52ad38f9876f575. 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/US83Z2123544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ca512e61ce19c5bce68f5028563f579a7975eea7fde1d38f7db79eff04d2d. 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/US83Z2123554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95454820262f2cb66445db10273843c9904df3f165ac52464589e5aec1f8f595. 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/US83Z2123546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805abbafe348690109f1c1348072a860d3b9dba9d6d8fcd3c0644a380aaf1551. 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/US83Z2123537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69230618a3615c2fa40579a5ab3533066d0f738998cc018ec0ae4b1a0ec37e9. 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/US83Z2123548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c3c2e8383873573d7a3230de277eefebed4594f087762f8cd495f62738649. 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/US83Z2123543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee4e9c1d1658c24a17a3ec789c9c79b739a860c8d2e88aae1dd366d42edb77. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US83Z2123541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c19760a6aab17ae05e0b93db0e314539c6a716c9140a4729935fdc12576dbb5. 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/US83Z2123553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751204669e92479f5da2b1c1569267fb1a5ac91274398ed09346d05c43cf368f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/US83Z2123545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b0494511b5c25370f1817bd78c482d28c40b4ec51f034c1f7ce07c6851153. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US83Z2123547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780dfaf9c53baea2ed45e985d4183cf27198753bfd77d34692614a5b91c3d0e9. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US83Z2123540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e5f96dcb40dc6d9eaa0ff26732ad4d809c447bb594ee4c8b75e29343812841. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US83Z2123551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a68d22c16c2d22ae2b7e35941bfbf3e787ae00d23140ade9a63b63f7ee4009. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US83Z2123555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9094afa62341167a4ae75490954cbaed6b961401aaa012ee636e3b86d0fa45b. 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/US83Z2123557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76435d2a4b9dd1773ce4970f4ec47ca0ee404592cf4cfdb2f8043d60c0ae9c3. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US83Z2123552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb4d831471792df4b7647792274849c34df121fea7586bfe808bfcb31b5fec6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US83Z2123550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5301727569d45990297ad31b0b798fdb3d0046904727a7ead6309b93f9232d9. 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/US83Z2123539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0972075cce088a3205cf7ada123e823f019f1719da9fe9ef61819393285e0. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US83Z2123542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffaa67abcd349ecccec0ec027d07d1b276f8a1141416e659a5f010da9c8670e. 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/US83Z2123538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a58e6da067f808c80645a9b567205b545f07c9ff4772db999a86741ce38181. 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/US83Z2328601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd6e96d096346342d2100d2ba442e04e98bcfe0dc9af13a83d668105adc3efc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2328603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab922acd4840d6097069924a21445b36dafcb60d507cf8e2c9aea783cd452fb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2328604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4811d35f68d7113e5b0d9bd890a01e9827e88eaab6af616be3d96ed47071c86. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/US83Z2328605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacd557ad0c8beb811663c3272bf35a6f7a3937523f6e00a6b38a603cb45dffd. 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/US83Z1773049.
Deep Vibes, Vol. 4 (Selected & Mixed by Fer Ferrari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533be6470f54d551596eb512620409dd27f7a1a95df1b5fbb9670b40b36ca00a. 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/FR2X41500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef74e927256e681b6529b6645787c77bea307f997003fd63c2438818bdcea1a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US83Z1773048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a977effc6451cebe45ece5ad12d2ad794f8cb1499d849c778751dce92299311. 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/NLD681903499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b385fed12c9261fcf0ec6b8c472a2527490ae06b18f43845d031107c7dec0d. 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/QM7281794513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4978af8d5b9d2fe7a280f9c67a29f5c82f0e3392483d9190114bd76cdca5f56d. 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/FR6F31924810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee84d149a80ad705ea66ba8338a1bc9224e274622e0af148f50074d9b2ddcd. 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/US83Z1649003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3931ee28a95fff52b67b350a3066f2ce7347c399f5a556e66055df72e30d5f1b. 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/US83Z2134264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f41e3af5de462dffe2ad0c946919a731c49e8e0ac1450d4f4373bef945ca3. 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/QM7281714595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b6435e05eb28a19527673a961a4768c6a6c21d43d9638b113439ce209d41b. 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/US83Z1811168.