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 0xb95a0ddd99a3eb1333537549382b457f4c6a3ad6279cb7d3d102598cd366b016. 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/e10ef6f1-97f4-4285-bbe5-95cfe61c5f97.json and https://artists.proofprofile.net/proofs/artist/e10ef6f1-97f4-4285-bbe5-95cfe61c5f97.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 0x0a1fccda2218b9f3901d049cb421b5605ad51cec1f88d81d20208e3eb0350633. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:20:47Z), 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/CH0801547001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cefb86b51716ffb0f6694ef130a45d54ef4648ed72067a3b13afbd8731b818. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/CH0801547002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe066d2c9f561d01794db2bc9230c1ae80d66e980c77eea5cbedd8f9021e638e7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/CH0801547809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47834aa7cd84e9b233d65e34a31be1e12ff9cfe9d14ed3bf2925d89dfa452cab. 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/CH0801547810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9246227090782c111a129052dd2b44dee5cf4422139fd10e93d650eecabff5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CH9961800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0912300d2a4bb25fd31c61eba74ff3003dc97b56d7b0c2a60bfbe78b7b69423d. 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/CH9961800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05083814bdbec515b92fd4c2a4e6398c8257ae16b3a5649d2df33565489a0185. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:50Z), 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/CH9961800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bd64e6e636d399be7b4a2b9fc3843c6d7bfa6f36d33c3d7c7570544e589de1. 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/CH9961800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83deaaaf5f94dd4757a7e64a50d88800c13102e8a77ebe851fd3a67c100e04ee. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:38Z), 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/CH9961800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158d74301aef30ea69d2bfceae1d9e1a70ad40a02ca7204338a9d27c19f7ab03. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CH9961800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d64f9d91bb0f1a2c317b5745ea154a1cbc9db5443ae0ebd9cf0fc636371858. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:08:25Z), 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/CH9961800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf480212d75a5f21a6e327fae815882b151cf47a106791b764d3ac138ed8c061a. 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/CH9961700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a175931aed4f4633e43851700afd12cfb8b1219b22e287f3d523db907f01e. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/FRX202006471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a584bba139b026646c5bdbb8827ef7fbcf578eb61627632a9eb6ed0fad321. 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/CH0012100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce713fab10a7dc15831e1ee1f10dd45ee52406c7421be50306eb3d4b59025935. 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/CH0012100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc2de29055b6d4eff214391d1420f635b8956accd3aceacac5f93e8a60ae624. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CH0012100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64b211963792d9003c2a1165a409e45bf278594cf71e8a5aa0634ca20fce27. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CH0012200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9699fde2b31b5f542c4b0ea7ee00ae6da7a0292bf156674e162ae7547ba5ca2. 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/CH0012200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ed594e59585bc00cbb2d6cae3c2e1cf174c0b694326515b8ff8a1680549de. 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/CH7401600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5dd820cc073dc4cb9dedef601d4afa481b27ccdbc6ae70b72ae838db12428f. 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/CH0011900338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5dd820cc073dc4cb9dedef601d4afa481b27ccdbc6ae70b72ae838db12428f. 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/CH0011900338.