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 0x00396438cf89aab41f717424e99a0947d3c3fe876e9429f2f98e2723cab23840. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8824afc7-d99a-46df-8ee5-80f098588016.json and https://artists.proofprofile.net/proofs/artist/8824afc7-d99a-46df-8ee5-80f098588016.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 0xb2c452a28e8cfb74b30cb3b70348d7f621fa12f7afbab2db6e374fb8f005cc73. 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/DEC371300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbdc93541362eab4b68b28d4d47875af615037ef98a1a6330e5be988f2c1ada. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEC371300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71469dfada25f283bb6b28f3f64c9b19c40c7b84948e60aaa90cf7f1a84077a1. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEC371300905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1737e84a01e34fb70bffb0252cbb0571ed9f7db9e26bb74348a5d00c190221. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEC371300906.
Sci Fi Party (Unser Flug durch die kosmische Musik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef7ba5ea88c84da6360014d2db41c871292d929b016b0310174ee04c78f09f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEC371300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b1b0d56e4b9ea5e8f88de933d91fd4d8a3be0baac219a9a849be243bad3fbd. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEC371300340.
The Cosmic Couriers Meet Philly Willy - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69cab79b1fc7cd6330a569ce5bfc62ce17d33ff7b7ad5f9d9b6ddfcd715f229. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEC371300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac1b85c12861733dd2d0360e8f8026976e64e530df99f1c7060d0c6019294fe. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DEC371300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dbf9de02e93169062c8a83fa08e280d7860246a2683888e65b7895fb00fde0. 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/DEC371300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd58effbca177368ffde0a103527f50eca42ed7f1569ed6517bf995504d7ec. 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/DEC371300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e9b57de238a1a1753ea344d1a2d868eb6576d04116e2737cb89f8b95222c7. 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/DEC371300345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c67982f2019ac204a4d5070c539db1272b21ebf6217102da7c81a73b78dcab. 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/DEC371300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008822b3535865085533fa335fff0d9f8ff4b7c5bc55a879b480959921f99279. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEC371300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b563b08ef7eed13d6fc1dfe9e0332554a6ab518979f53d9baf205d8709b73. 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/DEC371300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a0845d04ab20b71e07954fb3a3b0035ffd56e969e53d7d01b20da7d1450db0. 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/DEC371300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6180e59be206369f8abc670f2b03676ca81d7ea54300c2804bd6bd1856f85a7. 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/DEC371300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb1c85ce25f97d992a00b0e9563e440871207a10984e16b5469d2def1ebb91. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEC371300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdbbbd26f0dc1394f2e308c8c966bec64486c41bdbe3510a6c9bf7bf195c0ed. 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/DEC371300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99151c891cea60a1e50d65d7e42b2edfe25b1ebc3bb860ee043f2acb8de455a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEC371300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221deee9add1d61bc44c48604635df50ada61ce0f6c7e818e66bfed3948896ca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEC371300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7665a9e7a74b6ea1bb4338020ec8f037b847dacb5f6d796e5a51c3abcc29bc4f. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEC371300327.