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 0x750dcc98db5e195c622a6e90a2911b941ac4bf4663325ae28a8e9dc065a50695. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76866c8f-67e0-4b06-ba52-8bfcec5fbfc2.json and https://artists.proofprofile.net/proofs/artist/76866c8f-67e0-4b06-ba52-8bfcec5fbfc2.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 0xddf6be29387b1fc302b5858fbc267cb426532eb5a26cc3a9d0524f3c0a1329c2. 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/BCLF32500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424edcdc5b3a8eff83391c5671b7d9c5461a4fd00f8b012bc92927a2f246840. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BCLF32500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3e2b3d931194b8df13dea47a1ac0f0ef7566ffc9741648a637587c8995b30. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BCLF32500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276af8c0358e9f1619dda1cf61296b84d178c3c4211916a4bdf29ed7fbadc6f8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:54Z), 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/BCLF32500577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ceead2941f2f2bcb6892d533ec130bc6d1facee9a9804fe7b0bda41adc090. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:07Z), 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/BCLF32500578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd610573ca55a28301fdb3704808fd40c3606388ce4a2cd66e2632d1c4908b980. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BCLF32500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e2404e4821c92c21d2ca4ed41c2433ce7b647a1f3492f45a1cbafc34cedbea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BCLF32500623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac40fe31028521cdd1a6cadcccc0fd23d5107128b199f551623f6d0f9b43823. 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/BCLF32500624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af5ca2a82b9d277e0a39ae7e9af3d4c5d62d47867252aae066e8ba13c507d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCLF32500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc86f52c8464fa7ce7e658e35e41b1795414f902762dcd42c3854178c73699. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BCLF32500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f16720e74f8452c48bf28741904f53d0723ad0a2709782cdd191d992827a9f2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCLF32500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca840cb5691dd4b1e65ba0a93bf2c280a9dace5443efcd06c2c9ebe46ee5241. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BCLF32500684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52048322988569846a4f7516525cebf5377918d6104d43b6b60dd5fce96c2cbd. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BCLF32500693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207b3b8de590d04a8408d12e9cdac8c195a9dcd803b6137ff0bb34c2853d7804. 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/BCLF32500694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e92c56e447cf84ae78d7e72296076877901b15f5e47510e4e66528b8aeea37. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BCLF32500698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0925d8f692f3261b9db5d88d62ffef098614d7152773fe5e4b16ff6e476c9810. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:04Z), 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/BCLF32500712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224d050789fa10b8c7877a61e02579d61489fe6a7699322d5dfd65a4108f33b1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BCLF32500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd1a4a403b6fff6e35fce8d4d2f08c0add50cb57b5f02161b814fa8a69113fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCLF32500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9221edefab1f482e15a34fef81805ddd70a670421a5784d5a6d1e71664d502. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:22Z), 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/BCLF32500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12c84123294f2282383045c2f669c47ad02beb6c063d20c8c14bfa5d41f61f1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:50Z), 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/BCLF32500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a39cdc69f2e9a2f72c1098ee6b6b994084c0fdc0d1cc8a5daca33ae45e4d2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:52:25Z), 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/BCLF32500740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5122f2be757e64e6299e2dbf1b7d3ba3101f080e652583ffed9c043f45a6251. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BCLF32500739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d9803f38a839fca190ed51afec9d621ab130d3236ce38275e681558a5ab7fa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:06Z), 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/BCLF32500743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0cc0d29e9af0b12408a113600d05ba08fce623e896e52fd4fa1ed1cd50b253. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:54Z), 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/BCLF32500765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28530e2b5dcfdda082ad384dbf431433c5c8787b0b9c9835d299baddb736eba1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:52Z), 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/BCLF32500767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdf2234fc6e0b2ebe66467d0ee187478dc3777f369cfa37703edc6c5dcfee2d. 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/BCLF32500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3431171ec5e76d332f940dd03788c9a6dbaec4b4325ae79b9969f1b472723aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCLF32500769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dab7fd45af5a8a04ffc3f875dc47a0102e03ed5669a51e8dccb9a587bb4050. 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/BCLF32500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93dc6293a54138e9328b92dbbdbe5cf16a12666818243687abe4950f897177f. 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/BCLF32500778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83abb682700b0af3447327d1f9659a4fc100e5d8f9c7d849fa13610358b1f563. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BCLF32500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b9dc65f0a4af00c47d740405b010fe32e15219601bacd7d9a7b32a12cfd19. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BCLF32500779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff030abda7e42b17d788138d3998bc08997b3d0f2e59f98c6e5cdb3fee1da470. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:09Z), 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/BCLF32500775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e700926a48facebc4c3c9a32eaf80fcb4937a12dc33ec48d3e045371f89c08. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BCLF32500776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf582022dce4eb73a3c7ee8e67e1e928179c4c079a4dc3c5e151bd1b24f8ac976. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BCLF32500818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe18006eb39d9fbd7b89a2e3176a26197f8c89070ead2c5ecd84b38f1cbca9e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BCLF32500819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec921527a270af398e4a4a44b5f9e649273760f106052c948e77791ea187a5af. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BCLF32500817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe967ac26a6137443a2461f836f172d0136377739d5522a55a92dd8df06b7cc73. 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/BCLF32500816.