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 0x0aa7d20aebd5c6dd54ba98df87a5d30b58772525c881ca0ede2cb5bd68e5195c. 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/0669abe1-e8f7-4d6e-9b12-acb1576e84c5.json and https://artists.proofprofile.net/proofs/artist/0669abe1-e8f7-4d6e-9b12-acb1576e84c5.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 0x001601b82291dea5b6a61902c0c8e9d79f91bff2cf27fb9d9d64a42380ed4754. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USHM81457316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddabd1ebd35d92f055b61cce1d39b88cc99d773723af0cd9cb96221b58d4202b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM91400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd3a6036d48845bb4f1d0b4b47e3cb2b0c2f994ceb56bc8fd1ccd45870361f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM91400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387425e629f72d56b7a34355df01925173866d8d7a7dcbce74bf723b85007d6a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM91400786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d22738e3908ca7f745cef675bc25812fcf4ecb23acee22eb735f8c25b1a8a9b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM91400787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c23033f11adce78a0784853703387212ef183b8939eaab9b2aa3fd7eafb19b0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM91400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6e3a9977b279b131fa65766f9530ca2d1d16b7d8eea56977a4a2c4a51f8333. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM91400791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d134890d40ef91811f17ce4ca002bbe221fd41ff799bc61d05a9ee888c766b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81460705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945135917d9cb82a1f11794d706b1391e318615efe14b2d84588c92fb6eb6f4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:03Z), 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/USHM81460706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c88faf371228bfa6149091395291078866a161127ccf9b68b34fadd8104e2d. 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/USHM81460709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7c75627689b65af0bc1b1bfc59f8a75a0412be88e7713d1bc081eb68a79060. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM81460711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926507b1f3c869b61092d04cd200d927a475e1ea6ed483fb80c98f0cbe4a8ba8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81463089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca730dadfc2ed7985e5ac5a6594b6b89340a6fd0c6656575269127a361c3535. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USHM81463092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e83580757a505d96f31a240dd2d52fa45b71588fddc0cc7f59f959d24e2e0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USHM81463093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f39cc87f5e936c20b67c623bc38c56e0da6711f5f80253b3e0b76e9aa7dbe91. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:11Z), 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/USHM81463096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd409551a17622310c2bad0e3e004a6763ee1cb4354d03b24ee7c65dccccd74. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM81463097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab538d4b360723c7f9d8b4859ea7d670eeafc1dc31e24e65c774a532478c17f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM81457322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dccc54f86b51090027cc169663c49ec6871f2970511234fb99928463b6ed75. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM81457324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11400e205cf4d5d479ae5d0abe9b68955ec4b480ed3cb53422fc58b6b5b48ce2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM81457325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef4ace7b4f17ec4a6693871fe7c65b8cdfb848e3435fc96ae4414f52e784047. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:40:30Z), 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/USHM81457326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c02b9264dd7d63ffebb63f104b90e7585295d7786617c1582cfe745ce94f5b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81460697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7d071af35e4861a4c8e1af23cc7a3f8506dfbe76ebe7ae758e48e17395734d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM81460700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4afa49a2c88339c729c0140b9e5db0198633697d5ab2c69de28f15bbe4e934. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USHM81460701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cce0b0bee94d4a70a6c95651f025248410a3fccc058a7dcc9298e98123e0bb. 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/USHM81460702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b8c4d3de150af93c97f8600a83a492238b2edb0ed5a4ab86f61a4edfd68da. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:43Z), 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/USHM81460703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ea7799930c39baf18febd4ec149dc25674daaa11491fd42ce325927bed489b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:56Z), 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/USHM81457333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9b18c7d0a82dea256856c625fed18b22a3110a9e18c8996239e6ac8ed3a277. 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/USHM81457336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3688862b5ffdf70244d010ee391d79784731df2fa80bc854b0919463f6574825. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM81457338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f7e08c21c0276c7af8f3b03db2e7ea74b838469c82849301e3c950de76fb65. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:23Z), 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/USHM81457339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be795fea09b61173d95dda42ba521e235ca1ec807ade3f05acc03bab2dfc56c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USHM81769381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602545c3ad268416e7fac701236f59251bc8c47272492e1e66149e409db71670. 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/USHM81769382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116fec135e7cceda3c86bcb284b7c74826e10d333baa19358cc6a2163ee619c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM81769383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aa246b4866d8ffe7bd1e4ef7f144c507e3effeaac9fbb4f2df6d78141036cf. 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/USHM81769384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9fe4c8e137f0fcdb34eb877a6e19b999cddb75c9989aab35a75b14f4ca5a59. 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/USHM81769385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2d4e4bae36a6f7b65d8b950bbadbb93241dfb3a1b1d37e3a18a9e9e1aaaed2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USHM81769386.