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 0x7b136465569e790907bb8c569bcd2b52f67b2dea8135e280249413b9f693e4e6. 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/82588cc2-1372-4348-b3e1-0de2d96ea6bf.json and https://artists.proofprofile.net/proofs/artist/82588cc2-1372-4348-b3e1-0de2d96ea6bf.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 0xce24057d0db9a3e7b2fe659861d050e748aaf77353a9fa5ec41fdc4ddd9c35ba. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DELI51501798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f81b57892ca66a814f43f6bf92bf4e3f6b9ec1bd59d0945344da1b0e16691. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DELI51501803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57000d851c99330e64ec28d038cbbd7a73182d91eae0400a7205dc2f1fc7f1c9. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/DELI51501804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f45c56d1983f5ddd6d89e653612b91d517b8207a0027c896dc601870fe86b0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DELI51501805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9d534bcd73db8ce2ba0adb63f239224ef667cccb674d935d22654b4bf3684. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DELI51802438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9573424c8039d80b5994f83936b839dc4ca458b538b4f6013b5ef71969ad4e81. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DELI51802441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30975bf7c3648fb0766624ea465fd3fec6a8a68cdf291501628e06fe650f64ea. 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/DELI51802442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0198eb7676ceb4c9a79d97d228803bdc87064ef37380bcda7911fb8229244adb. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/DELI51802443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9532b38b5770d0076be6ef1686d5fcac232c7363584e43deca7c7255806341f9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DELI51802444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb518b20a1276dee7d6a9bfaa05c4389a2296b4dea8049eae624e47f4bd117313. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DELI52002902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201b248d5a4102a73bb916636d2c3892db216e99a452508b70042ecfce34a3e. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DELI52404324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ded228bd3a6bca4c1643bacff4b2a00cc73284c818cd24095d0e83d8c1d6a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DELI52404325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928250aeabc0cfb99afd1f12ef1c9de0d8389d22ed497d6adadb17241ef036e5. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/DELI52404326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75ef5c615039f2d9e0eba122da83b6df7dbcb1bdee984f2ed3b52e71fd03eb3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DELI52404327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d3599741444135a45420da61b76954cfca26e0c5830e195010c835dae25bd4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DELI52404329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf0c4f3880cd2cb7b5992c758cd9769b1587fb427afb7190a5643acb7b4915. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DELI52404330.
Whispers of the Wind - Die Wilde Jagd Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc061a9e1d2781b2fa93a45b6b5759b5f87cc3fb69a6e8cc869a8004c50e00a48. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/US83Z2348764.
Morgenrot - (Vactrol Park Remix) [Mixed]
Global Underground #43: Joris Voorn - Rotterdam (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901041604ce6236a841120b6849797bde551dcae6479686c255cd3af50ebddaa. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBHFW2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb56d94f9ada191d50d1e6f369e003fdce1af83f0eead78376ac608eb41e4a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBLV61638955.
Future Sounds Of Kraut, Vol. 3 (Compiled by Fred und Luna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4455225aa7058ecac5e38c51c15f0259466bb00976a5836e27db539051f0a31. 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/DELI51501799.