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 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 0x3e64281bd682abd10cf4d130873b840dd2a24f3451a4236e6187904eef5e1e13. 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/cd7a4678-1c3c-4a26-828d-5dd06134ff29.json and https://artists.proofprofile.net/proofs/artist/cd7a4678-1c3c-4a26-828d-5dd06134ff29.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 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 0x17260d8f593a283fd909008340628a2d9168a50d09f586bb45cd8af8c84d483f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CAU119311691.
You're the One for Me - Labor of Love Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b267f3b61af935388befcf99b4d58c5ab269d7451739a34f521cedefe89d44. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CAU118200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa651391d70a076d5ae38fee160f8bbb41114d69cec7880d353acd8b4a3a3c5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CAU118200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33e93ff7ed58959faf147a350b95b8c5bc35e4f923deca7d1a6752c49acb597. 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/CAU118300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542002496a100665766bf960ba05103ef8a81dd943b36cfb13931a923cae1c4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/CAU118200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ded604df092aa47a187b8b1441b08c19a8956d6314c5355f36b5862339325a. 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/CAU118200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe569e595e5b5df9379327618f4dc05984cc102cd967e63a0af142b62a9a228ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAU118200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69554142525d2a987abac137ab27969edf51b70afd0c4cde8824cf6fd916011d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CAU118200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca5f0bdf0031f9aba4fb2e1725873358f3c508b55d5b21bec54d6832db9fc56. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CAU118200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eafb856a3222d9252caa680e084a5e4ad3e1bda5802e804d891388ca643b988. 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/CAU118200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21824167901e82c32f5153d6c219d8da19272c4c0dfbf763a2ee3ea370179c7b. 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/CAU118213663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33e93ff7ed58959faf147a350b95b8c5bc35e4f923deca7d1a6752c49acb597. 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/CAU118300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb31c29c63cf2250c1cf67b33f6b5374b489f2dc14659ab4c32540dc9319cfa7. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/CAU118300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0bf7423eea8f23d2e810af06179b1e960b4119ac3b4a1cf7ccec1b6a0af933. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAU118300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1b4214f8ccc30539b5d5ab5556238e6fc9c1d988784a310f20ca6faac66a97. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:34Z), 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/CAU118300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae837843bfb3ea0f8cbaa33441463ae683cebdcf5e74fed8ecdf44971276dea. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/CAU118300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb628d01c70c68160d8df25776e431130ec4ad8a87bfb0b3d3bb7e5077426aa72. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/CAU118300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c4daa6f627b823adf27b2a8bfda72f50baf24bec171eac3749c7d3bd754873. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/CAU118300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163dd4c5d87b2fb7f6f65b27f1daa3c6493a533657d03d86190b7adf93cb9d40. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CAU118400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf740a897bba4e426281a0b7637a3576db39046a288ee2af051d925f72924ceb2. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/CAU118400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42a5eb9bf179cbee21883c412bc764ee9b1bc6f55bdc8144d7dad88d522fd0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/CAU118400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ba9320abd80495089edfbe1e554680473db8e5c2ec3092a290e389ecc6dee0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CAU118400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc367533e5765250cd679b95755eaac4dd916cfa6b2f90fbd164c3b27848263a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAU118511367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006925b36ca50d0748d400d07adeb5f9e399f04f97a341595e98862904b5644d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CAU118411368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319b158dfafc30b1517a323766a2ffa407a162ccabb70bc823ef2dd9f3b3cea. 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/QM6N22436546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319b158dfafc30b1517a323766a2ffa407a162ccabb70bc823ef2dd9f3b3cea. 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/QM6N22436546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a232a524e4fd1c15983e75ea95b46db61f67b8bff6cd3edc89c1d677405b38. 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/QMDA62489749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb630d45b97198c1300d554d2f0555317527c462da2b5f03fe6568982b5ae5669. 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/CAU118107516.
Livin' It Up For The Week End - Main Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860cb6b33eededdbb2b9517dece1a12bef56e71701b455973841fafc9a455c56. 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/GBKQU2260881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72786827e65fd30f3051a3a2b58c41610764a97735b18aafd7fe81f30b95aeaf. 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/CAU118207820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3d8f1b236a7374d9a7c761928e4781e14a5aa5d3f6669a712cc51aa141f6ea. 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/CAU118101380.