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 0x4adb9950adf15364653c6f04cf11037e228f3f5f712cf8be4d49586ca0a228dc. 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/5703049e-1d67-4bba-acb1-57011a75d23a.json and https://artists.proofprofile.net/proofs/artist/5703049e-1d67-4bba-acb1-57011a75d23a.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 0x7f7786e36e98f25e9956e533f1b193861b17f71e91cea39e203d0862d517e003. 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/ATT251232260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc7e10a36dd05c15b47dc1be0a21721a53a842a6da2b2c748118c8bddd6663. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ATT251232270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59b5c3f75255e06b7323c4552429a96bcbbd5761f024d1a0594ee482beed3e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATT251232290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33027f8e21ada6c6e70bdef1b1101610dd8192bb0b0505b978c013b16decfda1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATT251232300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebda7823decf127b59e6047b4c556109b68945d50e7f8788982b849771fdf79. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATT251232350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa030b77147d7468f973ffcc2815e381bbb18560224475257e83d4dd5aa9b91f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ATT251233180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9027efbf66e516c067d2e23973d28014790bff77b2d8ef306e7b7733dbd756a4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ATT251233200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224499f90027bab8d2a1114d812186f233a15ce57ea64e0ed0ba96a4a4784401. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ATT251233240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298ea58893ad8d643141e3cf6b610f03910b4e8567829e01afd18ca9ab06f5b. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ATT251233260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da4fb4463613a8e2c177712ad322c8b926dde2b2d683e83485fc47fbe602b97. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:36Z), 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/ATT251233270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185483b4d2277ecc9429e1239e90034438be40a1ae413992e7c04fa0cdfd578c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATT251228150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1674ec5dc155d933e85747c358d2d72d682982f10ddc42b51e09c5f4c9cedd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ATT251228160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13bc1cf151cd71035e072b7a819724b1db0026dee405a143d6cafd94596e721. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:24Z), 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/ATT251228240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4adf3d2f588a39c3a9ef28e7efd8507db08497cd296b45396879a3be56f541. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:08:17Z), 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/ATT250504390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156301cfaa1194922749808fb0e7ab904955807f23c202e5ff9967478f804296. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/ATT250404410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ae1c49e0e6d810e6d2f51ea9c2ddfc24cb257391a2629471bd6afaf03c784. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ATT250504450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73c275f380c365f6053c591453606e08b1c02bb21c89e791e00c01046f8d167. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:31Z), 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/ATT250504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e711a20467e9e591a9926f24d615c8fa0556c082f8947d29199d3406694b22c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEA661300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a80ed5694dc9522f73693e0c5d5e3c4383ce249d6d645b324672529faa21a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:24Z), 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/DEA661300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a87fc03313cc7213f3887847133f330400208fbe8d49e264404920849ae7f8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEA661300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8fb597a8e9b3837de4c3ddcb574fd77dbe25b0c4c5f41d6a7e5a9107b89318. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEA661300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4dbdf5cba43502346e9068404cd1ef5c066d230abb6b76eff6b81e1eacd7bf. 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/DEA661300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe985455435efb0e215742e6334bc9717d4a9584e6ee7b0b2a512bedbe57f6a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DE1JN2410557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5d6daf1c8c68670990fa8585aba0c18b65fdd9537a0482f899ebf1ba57fb4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:45Z), 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/DE1JN2410796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aa12b01453ef389795ab6b582064359dc0df3dc32b81a2c44f208d740505ef. 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/DE1JN2411488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3933e3ea8fd56506778ea3827fa90015c7226e1dc2299b9b54a77a96aab9b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DE1JN2410685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984b0e574ca2dcc1535936e69ce3954f3b18c7ef6e177807ce491f1f76725304. 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/ATT251228210.