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 0x82c862aec46375cebefbf03e8086d5f07f9bc35e06d4243313756b60acce01f0. 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/0baed7aa-279d-4a81-9e61-5b4739a10ab9.json and https://artists.proofprofile.net/proofs/artist/0baed7aa-279d-4a81-9e61-5b4739a10ab9.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 0xe602ae2c10b5f18b09a659350de7a106541f60f23b644d02a7d44c3c15319055. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUW61050025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3512961db4aeac0ac57cf08cd0f94fc894025561353ccd8d7b850a95671d5c6b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUW61050047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a92a8479360a240cf1c505467d6b820719e2d0ca320e000302d212c614022b. 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/USUW61050002.
L'enfance du Christ, Op. 25: The Shepherds' Farewell (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2d562ba3da925dbffe6cf3c29b39594087ec4e3d58d18bc9605682b0e9e0f. 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/USUW61050027.
Adeste fideles (O Come All Ye Faithful) (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec058c57baca93530b97541decd4d9e0dcb102a06675401b1f89cb41912e9b1c. 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/USUW61050003.
Oboe Concerto in D Minor: II. Adagio (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7f02d89b497c2061f52c516e1ea722f5b7650db127863aac5f935fb646d2f. 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/USUW61050050.
O Little Town of Bethlehem (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa131a60f4a8e7fd5b0b3b6612174bd2770ad1b93d18c9b40137e625ca62d7e. 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/USUW61050005.
In the Bleak Midwinter (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53073f54823e46bad0688fe5cb0f8af2bc975a348221e643916bfbb5d04fb3a4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUW61050029.
Angels, from the Realms of Glory (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646dae588ad647616f9406e6746b94731fb56091c0f9cfba5a1cb51f5c9c8874. 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/USUW61050007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd255a7eb12565061bf064eea3cb24f421ed8206ef2eae79ae12801202fc79f7d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUW61050008.
Once in Royal David's City (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c671448bc8407fb8d0e26718bb0e8aa8f277764bbef4295c0e2f0073f136266. 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/USUW61050033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188e7592e42451d1c29115a541177442000cf163680ff04bcf8f86540de8378. 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/USUW61050009.
Es ist ein Ros entsprungen (arr. A. Delmoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b104e2efbe83d8be65b427d6089e820c7767454453d4d2d2105a4dd7c3f413. 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/USUW61050011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f393ce07bc4493d38d932292377f58b1bd792af45eaf1f98c046f6a0929640. 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/USUW61050014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab125c88240cc1fa5938e6573d8f74d31705673a3938d90f443c923c79b2f1. 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/USUW61050015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7340bc61e3b8537275336d9dcb6061d7d92e04e2a41350aa8d4dda155233bc. 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/USUW61050017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91602dd4cdd5d487f6965fadb8e541a9bb313e2d535d0ab3f845144e984652a2. 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/USUW61050042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf87a68d7f1fed9a98701621624155c54637f8a64cab92df77ee4847108df8. 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/USUW61050018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00b7db5eaa51169ec19e930128ac4d8de18f9d063eb561641db805d09ea575. 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/USUW61050021.