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 0xe194248ee593fb3ad83bb07f551fdc8fc49adf3c0a654036359e0071b1ab27e2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f722c5-1c02-4ac2-a671-91b1f861af9d.json and https://artists.proofprofile.net/proofs/artist/79f722c5-1c02-4ac2-a671-91b1f861af9d.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 0xefe1600fdd99065dc65358277669b68a5e675be0eb6140aafc8a0644e1f92db2. 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/QMFME2325096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d787f232d9b47ce21098a321fd79e99ab35f2ac1d176afb9401e28d6258f08. 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/ES6102329103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd301edb069c09e92ae51f0e20783cbc6e6ab3415f3d5746f6675fdc73f1df79b. 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/ES6102329109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f70ea51084144cd34d2059c69983956a68c0b434ea78e667ca31edacb2b40. 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/ES8242201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c13329dd84f302d30fba76b62f4ec28c9514016d61612442e227f3e4f1e7c8. 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/ES8242201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff2bee928bc92e63159d922062e17f47f4389e6185bdb5b756f3fe72a7ecd85. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES8242201103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd8d6ab220f40fb98797c64ff12abfde4471fd7af14f7ccadf1a67a00d73aab. 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/ES8242201105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52e9c85c8744775c0c1b1f7497a6275b77f2db78bb00a7604c79913edd01a5d. 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/ES8242201106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1ca03304fb43425509a845cce5f735bd0ca1b7de32746086db10b733b06a3a. 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/ES8242201108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5112232f012138905f5ed3a092ad44dcc4c230544fca377451cec38f6232360d. 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/ES8242201109.
La Parva Ja Està Feta (Batre del Marquesat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa819b163056432cb42634021370162901c4259ca6ea9cc0e156028ffa43082f5. 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/ES8242201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9f890ba1aaf858b01a4b318fad1e48ac35d9b5851e27829890ea3915369fa4. 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/ES8242201111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79677a871bc57abc133c74bf4e3d4351b1eafb585001f371a8cba2855c85f38. 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/ES8242201112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527d70c7ad2f3cb43637fc9521e680a52533bbbae6248989d561e8be2fdfe990. 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/ES8242201113.
Café Radical (De la Tia Rosa del Marquesat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a37c37ac13775830c67c99f69672d3b0961f37a1b1e4d7f8c1102269186166. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ES8242201114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0036b5ffa71fc7db685cadb417adeec7774d438f06bd47977a95cf2d41710c. 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/QZFYY2263755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2d702b6b49fffbe65a21b44b49f6c690fc3d03fefe4f31a9e4e8897283af24. 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/QZFYY2263758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bcbf9c9a424b0a439efd6cdc14e510b6ad5259429d9e10c6c79e61db109702. 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/QZFYY2263763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4ed71896aacb83dbfdfb659fb8142db33fda49fa842b3a1cc63bdaacb041d6. 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/QZFYY2263764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c521073dd494133ef108e0a8f7026d7e6307a8a21d32bc6727f7f903050b244. 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/QZTAY2253454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d5afdaa10927a20f916ebd4af09b99bedc62de49fa3472732ca222b285fa5. 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/QZWFS2455160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787e8889f5a92c095bdb866511d9e172b207e96c1fbb55e8a606707a4a42879c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYX2341047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613e87cfad9dfdf1bade3d8d227bc6c9902cad644431baf82dd6b35ca0c03fa8. 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/QZWFS2455162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8794c35957c14c4524a38a716babf2f8ebd03f07fac2963333208a94984e82e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB62483557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdea6c5dd5f9b23787b0060ea3e73029e535c31ea5cb77c63164896b47e851a. 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/QZWFS2455164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b12b8f9adb4fe602ccee462bf3107849c2afbc7ca317e63f2b8ae18b03200a. 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/QZWFS2455165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56610fca64cccc60e1e8650d3537636506e27236f93204b7e2aaf08f76c0ed0. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZWFS2455166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92f25d808f71e88aa7948bf0902b778e07c0747137bd0b5a04536a06529a3f0. 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/ESA092495743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97bf47295d520f3c7b30fc69714adfca9095fcc021028f1cc11207027746214. 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/ESA092495744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048d951123540d0ff74f9f86a97aec25d5f0f88828e1ab12776808482e2c0f15. 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/ESA092495745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62351d329c06b9601e5dd2f1fa7e03c984f8645e4a78971e55be1cd6d58b5039. 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/ESA092495747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa6d523e14262216aea4addc8f168d0878ae4ffb54bbaa99c18966d2b49fda. 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/ESA092495752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0c9889a70a7e7b4f159bc01ef02046bdceeaff0c24d95459115b3130b39d6c. 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/ES6102300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2ea90580027d7d07808469210857e7cb52325cf8cec84c5030b48f3071a45. 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/ES75E2411475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f7fe652c56c8d11c0a7e9ea7b227b005f4483a86536863044caf2e5635712. 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/ES75E2411478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71217365df2afc3994f3f34a5ef3d2fe26f5371cd86ae2e82e0538e9c7416d56. 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/ES6102200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906efd8a1b9caf3dd260d63bdf76679e9db3358bd24c68d10d1158f7d68fc56b. 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/ES6102200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0c9889a70a7e7b4f159bc01ef02046bdceeaff0c24d95459115b3130b39d6c. 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/ES6102300406.