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 0xe66136465c638af35535191c64d9e371ed9267f48abc03d85519716a9d37f98c. 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/5f928d73-e761-49aa-b5ae-c0dd16d82683.json and https://artists.proofprofile.net/proofs/artist/5f928d73-e761-49aa-b5ae-c0dd16d82683.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 0xdcf2dcd45613820efc8a1f076e4e1ebd02a466b8494072c53ac7b4bff65ffa7c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA6W2201068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7201fa0a13bbdbedf980bcc1ac1a8531226f6e266ebfd1767a262eadc91b7370. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/INL412405707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519cb1eaaa9c63e5afd65904941e1d60980f7e2b92159651a86d918ebe6be0d. 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/INA6W2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2045a386b2ad5e2ec2cb0d66dad7090607da586c94300f2abf186167501ddc42. 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/INA6W2201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cdf581f6299fe6ff095950952fcac9fdbb5ccc1acbe5fda78097a5eba52b01. 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/ING212498765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3228996682bf528e1e62fb13dc939de333411b384549bb487a45a2cf50282f82. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/INA6W2201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e467863786270b3c06883c959729d029ecac4fc09b71514555129c0855083. 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/INA6W2201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eca14fa8df265848dfd0b33807ea25fa357ba505a72e401f4f248a3feaee9a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/INA6W2201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1f9f6df6d0108cafae9f98971157225177a06c7e1a1ee7423dd197fe4657f8. 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/INA6W2200988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bd084330c0a32573a7a20bf6eb050bb1f1828a20a47b7ae4ebabb1e406d66. 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/INA6W2200986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756858030648ceb8f3fac0028741948416929b85d06402cb4e91128f5fc821f5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ING212498183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde6eee08c47e58bf49008db65c5a3f54457b43c648136781bfdb6761af23f5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/INA6W2200957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4da2b9d2a8178d7c562abc7d03d6a84a0b94080e620809f0b2d44ba5a67c0a. 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/INA6W2200934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40aa2d4dec6b3ae434698393c8d4b69564056bc735000d32ca0a623e5af6169. 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/INA6W2200925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cce05cfa75411941b92094d4b1339d851d793c746ec2706b81bdf35fea7826. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ING212494080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9966e4503efb0ee9428e2110d4cbc877224d97e39201e5f9de6884d573e30a15. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/INA6W2200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d5620a6d5380a0acf867a470e6974ab2a40a6d6ee86a05a4c64e38a44ffe07. 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/INA6W2200878.
Angna Ma Khatli Bhoro Daru Ni Batli Pavo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55539b3ee7e773e7926621ba045a7836090d71ba0ac59b480edf04d2cf8da6. 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/INA6W2200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aeebf72562f0bad2d75018f7e053e036416b2a5ddbde5f70e754eae12a0a59. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/INA6W2200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3387fc907864c3d4d6a2312cfb7717db2be9557e315bc0af5d9255f06b7bc5. 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/INA6W2200736.
Hamu Tata Ruta Khasu Re Kalaliyo Maju Lol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e6e0cbf328c9953da08d5b7c9caafa828cfc05c1bd3e12eaea3af01e36031. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA6W2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1af91ed34a767018ee76ef5b8d6830b009b4562cd3e58191c86240046d32f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/INA6W7220083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d410e5334e7f76cf472a0be9b53fabfd783a97598cfa0e389e1b8afc3ba4249. 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/INA6W2200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9a5da8a15f8b04fc9cfa3c28515b1efb6db263df6ffcc1b472f4bd2976c9a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ING212464245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b2cc7fe20502109f4b2d2c34a0bbfb364da8a6494d61d6a23d996c2bf6d3c2. 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/INA6W2200654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce48e5d6a978d6b643286f1dfa0a4e3ee5a223cb2858f74d80b05ccfb7eb88. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/INA6W2201108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cfc160513d397a806f6c05cc28b8bdf00349f7557c102c7fbdf7778f631060. 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/INA6W2201085.