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 0xb2e3356134bba85699821f3693ace9d56bf37e2e3f7805e573c4c064a902f3f5. 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/674e1025-89fb-4689-9f7c-1924faf4982c.json and https://artists.proofprofile.net/proofs/artist/674e1025-89fb-4689-9f7c-1924faf4982c.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 0x59da118d49ce33911833cf267f8f2290e9d3732d2d483ff304ec4add12b12208. 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/FR10S1622091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88387b1a6b98fac0fd78963faeddce99e8e780070a870cf273b3a7792b8adb20. 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/FR10S1855841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa397efdc57049736b26e5ce1b2432ba0d45c9f7e7c20ff176ddf81760a8a50a. 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/FR10S1855842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca86d21224a3d8910a516f827fcb5236779421fe81782c26339a27b32ee15f38. 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/FR10S1855843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57fd2cd44ab237c0f14da76369932f050d03b742aec20b77f0f54c071011f5e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR10S1855844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6ffc4472773aae9b932eba8b09ca739220a51bae82000a7e21f21b4ddee932. 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/FR10S1855845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc61a26c1fad2222fdc49d316c578c5c6a9d7f0574483fa31e6ebd2bac23e11. 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/FR10S1855846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9056ecd1041aa3c492032ec671f1a592d11e268ae84842e79bfc174760efb57. 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/FR10S1855847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f4ffa4e96b9d3d52bd9bb20b6c61f547a37f9f4713d53f3bcf74e9201eab07. 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/FR10S1855848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d9c94637f84624b6e6bcda39c39faf217e85b1c5272180f7b569547de46349. 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/FR10S1855849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90b9f09e961cf62469c10f4d38394da3f01f924516fb64b292f70f50c5ba9b2. 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/FR10S1855850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bac555edec3fd279b25d333ba1e83dcd56430748c748ea10bd2621b80a647e. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FR10S1855851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5993a890caf12179efcc8bc7762b9bb73084244a55b587a49cff131ab01c09. 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/FR59R1853787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02141a08e0dcb2cdaa23bdd3c68f2afd85984e993856393b8eaf18d25a798e84. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1855528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421aa63fe678305076d65db6ba6f473eaadf6ac734b05a859260882854c28eed. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR96X1855530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e723fc6ea7ccddac1721f9cd2dce9023c42168aebc68117af1ebdfdfe02b7da. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/RUUM71900501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e0ccf555c72f4dcc8e1d80cee41e98b8b82ca2640ac2194e4c3218adacb1d. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/RUUM71900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd78174278cfdf8f12f0d0a6a9be43d126aadfe6612049b9efe50ced72b95fc. 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/RUUM71900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caa49bed08ac6c0987c3f92743c838c290c1a578cbcb4607149625acacd795e. 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/RUUM71900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5de45a27071614ae92dcf1c315ae0459cd08de88d7001affb17a5824eae7c9. 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/RUUM71900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ca61d7beada2b231d5de449829e1a84f9a1f3f822dfc35dca27a5a9559bbaa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUUM72000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d33e02e15534bd590e2a3bbd09b3aa2b808e48a8b76e7b4aeb8bfe2b30e1f89. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/RUUM72000826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc4b78de57e63a20a92ccd817fb9cbb811a8168078c168f33b52d387766d9f. 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/RUUM72100770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9764348599d0940891a2ff2ec985ec8eb8cb6a65db332ab487dc40b67c2ee2a7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUUM72100772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffdb7c8fd0fdda1ace349b8961c387741a80fb500b8adbbbec189230c2b5bc8. 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/RUA1D2239696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9404d9909b2edff9af024c16c339ba1f4e5f6c3b6c3d4c0069ab25ef102e67d3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1D2343966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50865b37dfe0c227fd3a5f5516f70b5cab3fe254af01af6ff56242cf4a2381e9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:35Z), 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/RUA1D2343967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f8be54f136e3528fce1c0a9076cfe5cff871b105dd7cc92e905c63f0602ec. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/RUA1D2479890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269d5ca51bc1af58a5d351ac1c929c83c5e2ab8005cc89e53739237748609dd. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/RUAGT2424691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb505cbe109cc4b51c2da5e98650b77b473d27e844728970efac3d05288663a53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUUM71901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166044f58a385cc95a13273827e7ac98044053fe3291f1c4fd7069499c997f8. 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/RUB422101174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa918c4c6d1249fa7ac0ec322f5a3eb24df4e090d55707f0eb6eb057453064d39. 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/RUB422101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc743e207faac692c060240c4b6237e9e6c86ff1de36b268189a9aeee90b1ca06. 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/RUB422100725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4ba0ffb4a1e90abcd4db30c99ac22284697937754b98dbe5cec6cb641aef88. 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/QZW9N2259728.