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 0x8995cf70c530b50d88cf2e37f6afb33bbb64f694cd33e81f63c60484e5f5474a. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a3968f5-6ee4-4a76-9106-5d2bee5f3c19.json and https://artists.proofprofile.net/proofs/artist/3a3968f5-6ee4-4a76-9106-5d2bee5f3c19.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 0x30b12af658f450ba1c77717ad63616cb730b5ed3789b9e014354480d24b65521. 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/CAE561712401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698bd2611300c064af190ac956503fd1a60024a08309480aa4bf70d08e478eb. 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/CAE561712415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f991b53b74ec4c7ae90de745f3d6904ec477bc1a898b9a5f2d6dc44fcfc2fe. 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/FR5MU2414701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb470fc84d51ceca36db4b6c62cffcee3f96f6df1f80423fcf012e2b192371d98. 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/FR5MU2313501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0ba5df3765f157fafc79b43e0ef431067ea7daa3c7dc2e31ecf7044a3b3bb1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR5MU2313503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462e283332eaa82027b085e3d1142c32dec18286ef9a39f6c5f2e0302fd1d69f. 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/FR5MU2313507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6788465fad354bb487b7aa42ccbd16272d1c8c5404a6c47e721ac2739e4624cd. 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/FR5MU2313509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f0556431e5e8f74fb309111406e52e503ed1bd3a00cdc34ec18ad66015e3aa. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR5MU2313502.
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 0x9c9475140b922375d97e2191a899b1b3e2175a99cefa64e514fe493006ba6d92. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR5MU2313504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1067542eb97e113b395aeb456cdc6dcb3507d339f3c2bd6dd2c6122e26c5b10. 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/FR5MU2313505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeeb49c995ef69ef97ec26cdd6a096d1a3e2467d365908df556b4ee669f331f. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/FR5MU2313508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7499871762fb27d83f3cfcd18588cc38bbfed30a4bd283b254337288ef9d31e. 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/DEFS41801791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f7ec674d0c6f4fce8a12f0a1d9052e9f77abc0cc021bc307271a5bae3c31dc. 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/DEFS41801792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48af21244f3509e47273360196367646a7823f9b7a264100ccd427304aabd8e. 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/DEFS41801796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4680c003cc7e0d505744d31a44bb4f194179949810199020019e0290bbed4f2. 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/DEFS41801798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07867e79170e11e41e98c5c42e7df14de41f015e6b0c4f446c65abe03542c87. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEFS41801790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440c3fad364dce91c6a848772f62cec857fc50f8e9e0f729da94acaa0127d44. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEFS41801793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabf5dffec21420f92a12033bd729489b92f90b067d8416afa168449b0a9a4c7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEFS41801794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bda753bf45d8ca71feb35e412447afbade302f16b897833574d718630adf98. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEFS41801795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce62bf22889dfe182376ab70162353817616b3c7663fd887237371ce3a2d84. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEFS41801797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfa6edf95f731a0f320aea6d6929e372d9c7dc08b27ed23f7d77bb3d5a83d9c. 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/FR5MU1608303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eadbd9c387faccadbfbd8ddd84361301876206ccc93c7202006f897f60cc23. 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/FR5MU1608304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb50fbeff3f5ec8d040def4935d1fcbdb539d2dcaa3981419cd7af36c48a67. 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/FR5MU1608305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edd88615e5ac2eb56223b339a688cc35ad8a1a8238228dbbb7fd31f2e89ed99. 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/FR5MU1608306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a01360456fdc1dcceffa32fa0dd615ee5938efddaa5094f8973945cb8f7143. 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/FR5MU1608307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8d46f155d80bbd4ffa691e5e99736e00f08d232dee68fa65ebd3ee1c4f83b. 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/FR5MU1608308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece76923c8bfeeac8615e563c48ca47fbe83f52a9f712899756cbab08650f6f2. 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/FR5MU1608310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5b6e368734e27989f0c8fd382ab5e69d9a98afeddaf6863f04a99ba7191434. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR5MU1608301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b26f1ebafb0116ff316647fed6be0a6d737edb05d08a39602cee39217b7b1d7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR5MU1608302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673bbc483ddfe5ea3d3d13b637c29a7f8850a398449e5ca64e792e63ff07aeb1. 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/FR5MU1608309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1372ddfbe2bcb9c5e2c2a5f231d26deb1ec91776ecd20799d391f3c81af0dad. 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/FR5MU1474003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa8b590c7e4d696a0dbd4422ceead04fd0b00f147d39a78e239d90d648edba. 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/FR5MU1474009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6534614b7dce41c59b9c79024de94d6a1e097b31f43b6bdf7506829750574822. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR5MU1474001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16378b7d6980e44922bf439b08b5a23829e170c21ecd666cb24b8a509fcfbcc5. 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/FR5MU1474002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83aec24f06d3f849bed6340b7ab56668e63cf275322947560f1cfc1a56fe274. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR5MU1474004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ecf391b85852e19fcb871a05c9d4c1733f5a39dd487ffc04bd9ee22dee1c93. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR5MU1474005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee678fd2ccac54c829172e501403564f751f4edc64d5b8f6df72a7cf280e76. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR5MU1474006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3b57ebb6bf5880bf22c828e4658954038b9dbc4ec9ad6df65b60962773bbd. 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/FR5MU1474007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0b3b206851ca7ee3d1fc1e958360f4ae1df8f286716739be836d0375375ec3. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FR5MU1474008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fbef2c031f08b0dd19bea335a1036472fe811a237ca4a6958a890f7705674c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR5MU1474010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51b7586af9de479327f680dac11a2886cd35bef5a322aa2f356dd627f32ca82. 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/FR5MU1474011.