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 0xaf94864006a9a43a8e637fdf098007f550c24d996d5cc9498ed9dc4da4e17dc1. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f406e81f-1b50-4a5e-b531-3bd60615fe85.json and https://artists.proofprofile.net/proofs/artist/f406e81f-1b50-4a5e-b531-3bd60615fe85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lillehammer -94 Fanfare (Official Fanfare Of The XVII Olympic Winter Games)
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 0xe8be4c4eca425b9bd23e4822192fc44c76eb47f76dbb48ae4c9caca48d4572ab. 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/NOUM71100855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a9642bb28dd3e55ad5bf22ea75ba9a96e1c6b4a691630074887ecb87ea6a5. 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/NOUM71100856.
Morgenstemning (Morning Mood) Fra Peer Gynt Suite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309fcb76bee33cdc873ffbf3ec236e43a2dfa2372d87c229760c2541cd3e2d4f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NOUM71100857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030dd78b6011ec2e668731d063d5774f6e6059d57cf09fb8d76080d1d5695769. 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/NOUM71100858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251af3a4be490d8ece6d845901ce3ffa510558bec154515501401d7106129a9d. 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/NOUM71100860.
A Fuge For Fun - Kontrapunkt I Grukkedalen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f77c9f6d9cec59742a46f41fa52d7665926190e76f51ec4b46b0b43ee6f85. 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/NOUM71100861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c9058138f0e8de73fe32e29ded811226242ca5d4b22ece48028b8959bc85c. 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/NOUM71100862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c86bc62b9d3125293823767deb31db5def77e771a69a95e271c17dbe361da. 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/NOUM70800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49f8f0f6a770a47656557efe3aea59630dcf48594ee7d780df872e3f7f42626. 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/NOUM71100863.
På Vestlandsk Bondestevne (At The Farmers Fair)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b53d92d64226ffabec9670206bbf6fd194b48fe6d5374f937935059aa4b6d3. 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/NOUM71100864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea750ef969220611e7befc344567327f1ea404421fe9576ebe3ca449b7fd621. 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/NOUM71100865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07460aa5dd7009025fa83b954311500e9c6d4d91d3f6a42ccfede816bfaa78db. 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/NOUM71100866.
I Dovregubbens Hall (In The Hall Of The Mountain King) Fra Peer Gynt Suite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad3e48cf6f9a10f66090a0a7bef8e75cd319bd618ce5aa1207644b7c986c51. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NOUM71100859.
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 0x52fff5d52a7b80201c818dc296da7e23318235f7b8089beaf83f3e147bd0cd44. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NOUM71100145.