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 0x7f9c0ec0a2c64bb4f83904d527a1bf7a6a95dd76adddc3a7f429ef23871d3fb1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4df6a9f5-f1d8-4821-8219-b2dd15c33bba.json and https://artists.proofprofile.net/proofs/artist/4df6a9f5-f1d8-4821-8219-b2dd15c33bba.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 0x40744a5c53382c9d0bef1cbd32e50fe8d0513e92fb4b46c5f2cf50d3878ac498. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR59R2469659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f404fe54a32e7abfabb757d8ebd73ace01c3769323e4f7e28dfb6a0681c2da. 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/FR59R2469661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004d53f5fc099019b49c15ddee7b03b3626552743600b5bca2fa8b687b214c5. 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/FR59R2469663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86affeab6ff6fb4552fbe3328d155e179be33953c04e704d94e03b50e9720118. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2469664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a29d01ecd628e9f2cc262490347a1b140ea869f996b71c56affab73b30b45a. 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/FR59R2469665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af7b2c174bb7e932f29893bc3c62a1f622cf8b4e30076ec9eb04a59df65c8d. 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/FR59R2469666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69b5ee8d33bc6bdce7d7fd8b02693fc1dd0021b95cd1b97e376f61bdd6de5c7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R2469668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0bb89d5ba6310af35d46827d09b0740f570302f22d9bed722e9eb4e4c93003. 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/FR59R2469669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c67d006cafadff57b62154ae28a5d035f7a2a054220de74a9d2a22b33a7e59f. 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/FR59R2469672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22088075367f6fc9bbf71ecebf45e16d95dc32f5b16c45f34c9862e90206ef. 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/FR59R2469674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc4bc0329b077ec42cbdb4f507ebf720711bcef9db08038f581f4321285ebc. 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/FR59R2469676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c226a4fccaefc8a768eeb76b5c48b98f3b8a23c0e528238a150ad8a062e12. 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/FR59R2469677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b96442a9536c373524a10628a5c48f7cb4caa889b909b89460883733fe81f5. 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/FR59R2469827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c883d7d6cef590abc2075d136248aec099b38f894ab50c4ca5818f5a47ada. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR59R2469828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec1c9135bba83a6288cd8960eff74ab65652c51d78ac3587dda62e5234a0804. 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/FR59R2469830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef1708c3f04d76864897454d425b919c6a8ada84bc042a6f122239e0122a860. 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/FR59R2469831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6d3626b206bdbf0803194943babbc1fe67b1919ff1f5a10032258eea122d8. 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/FR59R2469832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe244ad8bcaae09e4e20215d336a9f171f30390819650e3d3b8638bd5fd04289b. 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/FR59R2469833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ed7dc807e0aacfcdc3fc64a679e5bb1917c7ec63c17d4823335d76ce447059. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FR59R2469834.
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 0xcf499a49e37becbbef412db20336ece24346a732f2f84860188fe55ec7147bd8. 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/FR96X2415235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fc56a6101df0163287b16a28a70de782b9c5c8586d490d146c45d3d129e8ad. 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/FR96X2415237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddb5bf4c9948dc70ad2cc687e4eb10ea0d4658c61b4e777b94bb4918dac8cef. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR96X2415238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b491773b4ca98625983ec725f0aa1162f52940d84d5607b7d8f694a7c6b941. 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/FR96X2415240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb42f06b3f6249405ef532f2e39db89321b01dba3e9eb8a1aef426e6f9285d. 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/FR96X2415241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050f1b11c2f65ddca6f3c06af1612d67417ac8a0ac323752ec4b2256b2df97f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR96X2415236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f99091c7762c9c4ae45ca58c14ff3c70f626e185bdec08a4d81390c8391b7d7. 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/DGA072391933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae8411fc594e5a4f0aa54ce507e44189c7e9d17ae4f570edf3e2655cb1d915a. 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/DGA062330080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7e76e0e895bbdee51e2395948845f4706a0f0366e6362bf0848ba7450b957. 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/FR10S2427661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27be80affeff08d4ff2ceb4f510829590daf6fabe5272125b6957f4ba1ab6817. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R2470597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4148c5a1e0c9afb65d5212742076339cd1880a7c831e49a839f9a7fab45ef16. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR59R2470598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc913b1042f45f25ba83f4f83b3702b5d60a078501dd1b15c61e42a816713b4. 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/FR59R2470599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d8f7eb4cd060b376cdd9a991a791c84eff8719ca2f15f7045f592bb81b533. 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/FR59R2470600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccf7c1ba8c1735f94c07b9ff1f30164fed1ff8af60c14536e7d534e8e4601d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2470601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147705a589fa8779f55e9eedb2d27162bd0d57c7860d674a03db90ad92500b54. 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/DGA0T2416632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3574a9a78e3bdb3d19237b1fa129057a63b31f1c0185b92b2a3b20c5dab45946. 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/FRX202525995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997b9842d2a15d422e7d5e53d8a781872a427c2bcf578fcdfd508b8f2cbb1a9b. 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/FRX202525996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2621e4af6aa2387f7679cd6f5c757ed24fc89157e23ad3ad589d1ea2c2cd0ce1. 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/FRX202525997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ba21a40603ebaac41ef861b639a94f61b5f37f359b5b027ad989720c86074f. 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/FRX202525999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea463854474cb7102f9dfbf539cbf101175ddae21917eabe32e9c7cdc0291840. 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/FRX202526001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef3ee44a1055703c13080e7f959e913b4a00fe26adce8ad7560989f77afb37. 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/FRX202526002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539ae280f47145c989a4a82fe64b91e97d92da40dd4ca9dca6628af1f452e3b7. 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/FRX202526003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ad1c74f2aac801b2c43d8e4bcb90f22b05d4ecd89709bc37dcb142b297895. 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/FRX202526004.