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 0x63d47a0da5e301d7b6519aae34ad3998e33f3094cdc5173bb300db3441fc18d6. 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/c1669f5f-8dd2-46a8-bd8c-454b2dc61fa4.json and https://artists.proofprofile.net/proofs/artist/c1669f5f-8dd2-46a8-bd8c-454b2dc61fa4.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 0x8f30fc8d552b2aeb124cb076fa1693da323ea7354ff0b87d96c873fe0b78550e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEQ121855563.
Die neue Reimgeneration (I.L.L. Will Remix 1995) / Mal sehen (Demo Beat Version)
Gleichgewicht (Demo Beat Version) / Jazzn'n In
Cro & Pontra (Demo Beat Version) / Strandgut (Demo Beat Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9383967371dcebabaa60f0ba50695a99bb22f1d35f45f2e0c851a1b8c5ed52eb. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEQ022009758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111fc7d63e267336395fa62129cb4b30f4d0deb2953b8736da646d8a45e04a80. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:01:34Z), 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/DEQ022009764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbcd71cf44caaaa49b44ab7b3bd43892b36540077e3a9f23a4e45b8184df626. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:00:55Z), 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/DEQ022009771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe757ca0c8031b23c3a5c6e7fd6f2ef02c48d4a5163dfb91a5019e257cc0fbe2f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEQ022009791.
Feuchte Aussprache / Liebe und Hass Teil II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab550dfc2b9b08ca763d3d4b49893bc4dc73432153d11ac30f6499ba3ebbbbd. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEQ022110978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9779347d4435c2a10b247a2cb6401b4d052d2b118773715eef73c3b534ed0e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:45Z), 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/DEQ022110986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b7f925aef7afee1c435a987cdcb313e396f903625401ad2b55c150391b3ff2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/DEQ022116664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b605661a9f078aefbdabe7a4a62554e4d37bdbaeebd145ccfa6fb309bf8bc5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:42Z), 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/DEQ022117955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bcd5f0095b7614a6a84a61464b23e36bbbc247ce3e57072a463c54aee781de. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR10S2551202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bf6e268eaf9a03543123f2a410c92b97db7d04723cc670749a762eb6ecfa8a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR10S2551205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96200b1998ebcbdfb5771f873ee07015fbecb3c39e07e4f58a8086339e4af126. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S2551208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b97fee263226450c0100a171971d1fc2abd57289c8626217b9c961a60556ee9. 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/DEQ121753134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f3014968717eb6506d6058350b7bfed82290c290d5a2343040d59960d385af. 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/DEOP91300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd6e69bf9939d8d5000ded7d44015b08b7b15f7a40d4535ce6e6c2589f0b14d. 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/DEQ121745791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e33ffcd08fd4c182fefccb2d6dcf061c415fdd3b642b2bfe47d4c7f795d8c3. 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/DEQ121745792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a4c64e02c67917c961564ddd1ac00cc6a8a62a89a43d72d7ecbc51d7309fe0. 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/DEQ121745793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9ec59b5647d9edf662b8c876da0d1c8bde714ac67845e7d3786af3591c912. 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/DEQ121745795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111bc63f7d73dd36e6e0b017de8fc37930007b41a07976dfbf2318ad723d100d. 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/DEQ121745797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ec4ba6733aaf9831958532f136a6c54bfede67ae7420130395051db4c88af9. 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/DEQ121745798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68e58a5fe9aa2265a00d79259ca7d3bc829310c7fbeb350017eeb54f542a012. 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/DEQ121745799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9de48822b7aa4b7aa1aa65a4f5fb8256cdfd8ba9e50ed4bdc1b41bb8f4d128. 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/DEQ121745800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300cb7554da13983f13ffb75a5ac9f01488156706be0e2ffb24bb014f3cc9a4f. 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/DEQ121745801.
Crush Hour - I.L.L. Will Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9de97d48ff39d674155a0bc587da88cb7c7445b64a66d31971fe10e1c8dc6c7. 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/DEQ121753162.
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 0xf376a22cb4db547969b7f1a1d941649dfda1c8c0b157f3be47bc77bc84370b5d. 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/DEQ121745789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e6e6b6191dafe9ff010feb6398f1c41be2ab94d622603d42aa8f84827be49c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEQ121745790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efa418d84ad5ac1c25dc5d1836d7afd3efa814fd62ae941c9c98b4bfe0732f6. 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/DEQ121745796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08202c65d8b27789a9962c4103170ae22d27d858c949b79371f32d09fc27851. 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/DEQ121745802.