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 0x9bd4a73b6a352be4aca49f580935a89f2df115608b31ebbf8becd123e3ba2cc3. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fae00a39-87b4-4c08-afa2-7f75fb968a36.json and https://artists.proofprofile.net/proofs/artist/fae00a39-87b4-4c08-afa2-7f75fb968a36.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 0x17257dcdf46cff697c4e04210ce5b313e1a8b3e32dacbb3616e78a4c5e42118b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH6540809466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc6220301f3b3f118b66008cbea62c0040044e8704a55792b2195c634d8e116. 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/CH6540809468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e923399818d459d023e5fccdc9bd4855183db1b66f0582d9a5fe0c4ea6a15d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6540809474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56672f2e9659ce8c793c8d1a01f7faa61c4292df420f70a9a6f4c7a4b616e743. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6540809478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83e4e336b3efc5c4b0cb8bd654fa2bcee075c30876aac398aba6d3da5b66f0b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6540809462.
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 0x8f62d8cf62471cca203e1c6b0fafd40a7e995143c129d6e4db6bb8f68a27c6ad. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH6540809463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2cd2552301df42f16a24e4948cd889d83c9191b5f414e654e63745b470c636. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CH6540809464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b9b1e5e6ae217f144c16b49abe76daac9d991bf41a0d1dad2c660d0b86797a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CH6540809465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe288cab87dda5de0bbef4b82ee92ba97cdd768d3ba4374b1134f15bf841a045. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH6540809470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d5b70b121f8317182a2a76321ece9421882a5cee277082bb31096e18da58c0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CH6540809471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf249efbd127af4223b027836529d81216b1aa9c3870ef2281016806a55126c89. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/CH6540809473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9cd68ac8452cbad326c371ca844f4c761ddacc3b1730277216f6789924a46a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH6540809476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa4b08862e604135c619dda9eb99e9d306abd95795199a0be9bb2362388984. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/CH6540809477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d77dca58319794683cab7362d13277f78c86691d9d50aaa4e36696cfccd8e. 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/CH6540809482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a5bd752ac312ae5a0b32fb9cbbb5b65e0adbdf4c87ec4c6da1194fb72eaf7f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH6540809479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebffb72794faf2d5835edc51f379619aeaf22915da48ce54fc4869711547b38. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6540809458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9623bfb265872dd6ac18d53753e116b65351035ba4a3c33137f23215c06c04d2. 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/CH0350900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaaf2280b67cf72044f40832ae0530f1f12513ebfbcdb49efa24cf87f757e68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0350900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28198259eab72e0b48004417c05c9d37d69811e217028ed5f10df41d883e94e. 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/CH0350900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3a0cd819a66e2bceaae001e0201ce818c19c9fe92ab4bd5408240e18e8eb4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0350900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d2bb1da47316e3b9d8e31494022d67d5e09a25fca4162faf918fe1fa8cf5b. 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/CH0350900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7825e1e317c534a9ce180107058fec258c5b3a21fed32ef81c0e1456364a55. 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/CH0350900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ad00cd6124fbac2d57cf7f17fd72e329d6038632722a568c8252c45b7c2e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH0350900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae756cd3d23a88b4ce98d66174baf63b15bdb48f69b54866bf492ade3bda3f8. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CH0350900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b1267072680dbb8d6d07486bb90f748ddce2b85c451bbb1b91ecaa68b8ed4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH9881800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18072415e516c621a415278426d3546e29d9681d8c8c1ec6252670afc6902f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH9881800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2755ed496871a2965f4648fd178391a903a6417d0b0b7bff7c77dde231ea7efd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH9881800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c89553249e02153b358c460914b6537303106e8d3fc7e9b05b7699d846bff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH9881800023.
Bonx it pon me (feat. Skarra Mucci & Ganglords)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ec52818be51f603b4abfe9b1c84c7bdb3c0d6834737066e1e4c08be9c5e23a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH9881800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5fd872bccf87622f51d7250c7d0c20d161b271aaf6f5c6427cb1a462310bd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH9881800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2544b310566201852dd5d41ea61406d9ba57440e0d59ef35db4611d0ee0f89cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH9881800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a209ff8a512db5c6d63847a4918cad548fd87e5f18a66c344c178ac5b4e920. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/CH7811712787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684b309a64f52f16e8881d56af0f6cd58ab63976504c4fb4942901738cb43ff. 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/CH7811712788.
Hip Hop Kultur (feat. Black Tiger & Skelt!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a9753799aadefe2a92f83392613b06b386179d91ae81da8cb3afc49df295a5. 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/CH7811712790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48dd4958bd3cc7ae2724390c50825917140477816ce1aef0c6fb680504c2617. 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/CH7811712791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c73a0968d72a84256a9726cec4b9cb22d0923ec46aaf443aa2f0a86646c61b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811712793.
From Zee City To Lu Town (feat. Bligg n Lexx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f818ce3c29d49c1ca397e53563caa9c211b5d4f7d59a36956470cff05f5a26. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CH7811712789.