The Fahrenheit scale () is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit (1686–1736). It uses the degree Fahrenheit (symbol: °F) as the unit. Several acc
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 0x07f4c89f744a567effe59eb6b3d85274a29b60309bf45e4b04a8dde92771a319. 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/35d6b88f-a2ae-489d-b353-9c1f8cecb302.json and https://artists.proofprofile.net/proofs/artist/35d6b88f-a2ae-489d-b353-9c1f8cecb302.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 0x49ca3046fbefcf664619d8f2f419018713e7e5a97b10af4e86d4b395516f1459. 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/MYLR11730098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16034ca87453c2e59cd823065542c55091e7601a32309f27bca4ee2bb1dad49. 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/MYLR11430727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a55da38a48d82faddc00c9e65fb7b49f68d479686f4315c97ae287716ea53b. 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/MYLR10830240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5b02f27e786a4b6a4000f261345929d705832f535a3569fc41ee064712da01. 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/MYLR10830236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7196ec00ea3d7ce42d9692fb3edf30a03eee043ec87c5f4d213e66da25829c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MYLR11730934.
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 0xc88e9f80c4527f5463301f18f894fea5109114fa2923ef5ea1be9fcf2d4af09a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MYLR11730097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea29191d5d72efa9c9d26f73eee7c9ef7aa7bce23303889a6d00c8798c2972. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MYLR11431017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d75f70e256de0ab8deb89fecf7f4be94f5da304e6b8f21439d1c05d1454a2bb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MYLR11430726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37cf00960c8c51bd94ba74d4bd1b81a3bb0ea33b058a91d15f83cd386b1ec0d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MYLR11730099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd93fc4f9cb4afbb9ef658bf54c7f8909119e4f67baac4070528e72eb672fb7. 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/MYLR11430723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c21ede4609e70c7eb50ba3059680964a60395fe822c51de6a1e29ca00b602. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYLR10830238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51477e8a8301b500610a6ee962a4c985093d85ffe377d457619984157ae1450f. 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/MYLR11430724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9af0162aa79ae8d81a090b1f46f06bc2b26c5fe543e7371199683161f5c57. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/MYLR11430725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53b42babb522f572af76ee863ce2957c58de5d04296b58fa4b91940bb8ac8e. 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/HUAC61300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3edf198c23fcdca1550bd073c57248f56f25939b94a7b170137658cb58cc14b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUAC61300776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682388ffc4849583bba89996cb9117eb6b87f76f27b07926e48b9fd7b32ab4bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYLR10830237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1709b3a23d5f2510dcdc51f7ad3f8a7d609cd6a6f4ab03c2c113cd749429598b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MYLR10830239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d55f990ac80e456f24f850b510be3de42a73e2241c269c28b1635107723d18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MYLR11430715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67eaf70f17298a8099f563f65804dc794b9c0174cc2071cde1cee515b68a006. 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/MYLR11430709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630500cc839788df8622380b6dde4c75ca38c271b2729315748a2091a88c0d51. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/MYLR11430710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c98ff5e14c4dcc18d49e5256c5e88422d4a62988ada178434552172d2fa171a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MYLR11430711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5bc694b171feef7c5fde138758febac1b813f413e487646ab5043380e632b8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MYLR11430712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00310850ede0a48b197acc14ff7951ff59275cd6c15a9f1045c32c30c87f35e1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MYLR11430713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751e0a3e53ea4e3e09f838a4f04797feff384a5010a74f17e3e567a9832248b6. 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/MYLR11430714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e4f8672aaaeb3de8675dd74626995c5f25e26e8a04c15871e8ff4ace8af2c. 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/HUAC61300781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e43dd3912e39b77b1b76779517f109b0d78eefdc2aef51052227e58ee92ed1c. 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/HUAC61300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d7a7aa046c20a585425feef34a3e36080ee20524f13d963d5837744db3ee7e. 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/HUAC61300787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309fa9c923f0d9cc2c7c5ca76fc8ea92a5e73122e1a088a2795816e228c00de8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUAC61300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0db49ba599d266facfe0afd6488db12514fbb50191e2f8cb2a59a6d624792fe. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUAC61300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343269937287d396fbf781b1ecf922766d8e60f6eb1dab9000ea68833a6b357. 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/HUAC61300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f16346cb548726874c4ce9a1b3648dad6285947ec7ed790e843b89138feef5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUAC61300785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea091be709f8d658348cb804aaac6375cd53868bd5e7c28738a8864eaa576c5. 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/HUAC61300786.