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 0x15ac1311366d8cac1d00094cd5a5997ab8d308d9da5050a830bd1cb1a4e468e1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9167e210-20b0-4c97-98e9-d15408a413b8.json and https://artists.proofprofile.net/proofs/artist/9167e210-20b0-4c97-98e9-d15408a413b8.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 0xf641c4f923ee308bedf4880aa21172dde7a3531627274240af83321de90c1f44. 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/DEE282273802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cae52720523cca97612d5992d295c4d09db00937bdbfa76ef315a2020a5467. 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/DEE282273806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8616269b075c7614cda72815cd63d57055a199c142b284de2c2220827eb83d70. 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/DEE282273808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0380c13ee08f1dbc13012b385b1ad2f827983b84b55d634b345f1fd3bdf9729. 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/DK9G52300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b0934c6c7b67032225d558d97fad7a8dc518f3433e884dbba10a587bd5b27. 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/DK9G52300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b076c045accac5acf5f4e72988a36c985dafcfffab9257986ba337a07a2cb. 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/DK9G52300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa2b217ac67aacec7d3ffd7a9a50e2d13b23af78b6526f45c1f44c1de5d544d. 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/DK9G52300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d5a75e827cc583477cfda214bd5f2200235b92773773b2eb2fe5a14438b6b9. 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/DK9G52300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd28a767d575e851cc8f7b164a8126f31b95cd5023713b8b226ee07f3e81fa67. 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/US5AV1000069.
Italian Jazz, Vol. 2 (The best italian jazz collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7316b0a8d2f852e71c6cd181ece65efcbda837989e97e76ce4907f524826fbf5. 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/FR6V82132144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0317248cd4fd9842d201b8fa9b94b15a6fee0f59097ed51e7709fb0fdf325e. 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/ITC931409601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c30065c8f9cf54576d8ad9c2d4d34ac1edab6f6698981472d15bbc9fba47a5. 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/ITC931409604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd855bd3952337042e6ce1c3f254c08a4d71db96b6b1ae98b73c27c2b39676e. 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/ITC931409608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecb47c78bcd60e6518879d5fad24c24d355e4f4bf777abef9dd62582fd72ead. 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/ITC931409610.
Five for John (feat. Alvin Queen, Joe Locke, Marco Panascia, Max Ionata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987e8b9e5b83bedeb8795ec80f1686159cb0ed3c2933ababd52beb21a408c15. 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/ITC931207704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a848ad153d99647fe05821c073b8d449e54b978963c6093fd7eade40830e470. 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/ITC931207707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3549bc33a79ee03d08425e7b581d4165b4eaef6d05f457b8f1852c9065455da. 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/ITA450200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec16f876f1abe64645efd45dea262f5872343cda99de67d843ad8fab153c95a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ITR442400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb1a7ae5ea273adccb1763442931a13abee033630fa30db0852b44e06327d90. 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/ITR442400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69807924df8ee5111b109137397da301042fa25d4779761b033fe70434badf56. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:18:06Z), 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/ITR442400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efea6970c38a3a3801fcb0b777304287b3eea23e85fa97dd4e5566ff2de2a31. 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/ITR442400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e9a81b773bba6f3d269822e3244e7ac42d70683b8f470cf72e1fcfc45994e1. 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/ITC931610908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde22bc107feb99c201f23f0f20b2b6d78ee89a5329147e6fcf8d0972d61bb045. 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/FR6V80719881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73458c81d01dfccae1dd4253ae645ad3ef5781d0bbd0e7cb30741b882aeec4. 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/QZPLS2221056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a54b6a214a8127a1ec27b2b3b34ec9817c2d10509e679ace8d6309550986dd2. 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/QZFZ62309854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73458c81d01dfccae1dd4253ae645ad3ef5781d0bbd0e7cb30741b882aeec4. 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/QZPLS2221056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30cebf1beef6b246b4805a9641491667111d97dec5988c9efac3d437266fc57. 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/ITAE41600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c1c11f321b2789cc7eadd34a5b38b91c5543b905ac6d80da49950af46ec8ed. 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/ITZV22200037.
Sometimes I'm Happy - Sometimes I'm Blue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4fd064b3b92a314ee565bf2d183fec23b3f726010c4646ff49461923557fe. 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/ITZV22200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1367aaa226ac87bdb4b96d067c3f43b6c5924a7a49810b8b92bcab7b8fbc11. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USL4R2042886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77ebe7cd7495042ae674823e3932783a7f510a78631e45ac7016c169f779316. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ITD871215406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe933404cc10ea0614e8d30ba271bc2550fa65491c780c08a032c595c200020d1. 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/ITZUO2103202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560baad8026abe681551c757aa1d30532b9a1ba800e3460ca24e3f22b26fa289. 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/ITC891000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cccdaaede5ad5ffec087c1b0343015af4d01bbb515107579bbd9a8c2f95184. 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/ITAE41200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9605a1479775c69519e03aaf5876bdb6fd0f466d6c5418a7b035b19c741f0f18. 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/ITAE41200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d402900ccbf7c200e3ee40f1b002b51dfc0b73ad43e25411d52d216450ae06e. 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/CH6541958265.
Inside Time (feat. Max Ionata, Gabriele Pesaresi, Fabio Colella)
Marco Marconi Trio - Featuring Max Ionata