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 0x29279afcf1e3913149fdf805c2b3ccd86e354d860da89da213b560d8f79777ac. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cf85993-152e-4db1-bf9b-070636d55e18.json and https://artists.proofprofile.net/proofs/artist/4cf85993-152e-4db1-bf9b-070636d55e18.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 0xc6edeb548a19829695007e91f284f1adfc0f62584b0cd156f86e831217481034. 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/QZES81932256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be8a213b5ec1ad8f43c8755bfaf2eee584c45ff272937d3f31223a65dcc7ece. 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/QZES81932257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271329ea2148f9fef3db748034075e5d0a538db50d97d6efae0afa186f10493. 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/QZES81932259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d3f2732e15e752be6a55ebe6adbfa632e10891789b7b48d7c832a3423fd233. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES81932261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2e6008e3957a6a59f5a3a6d3d7c502b2213698de17e19c92ff2a03235e572d. 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/QZES81932263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbde334fde09bfabea6c99c405931e78cc42d9692438c9fc7d14ebb3ba86686. 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/QZES81932264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44848c0157935770a67ba7ee9fca7503b8c29fcb3ae2c107d5a19e0e3dbd4f46. 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/QZES81930701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b25d536052b32215a3b06903102d5242b4b512217db569b5c5ab63c8b9a3f88. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZES81930702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78b7f994f6c80311d69c8eb646dc37bb61e31b21a302db8ca7085bdcf50456a. 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/QZES81930704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48f8ad0f7f15da0210a8c97c9474a90b319290ae696c15725c2f745adc5b641. 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/QZES81930705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480fb8109bd89c4a437945e5cd8f2216b4746f1165517771cbd396a2ec3f82fa. 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/QZES81930706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafdf2cc8381fe7a1a798dd5fa25b8812d61bf740401a938856c4d65e66c9a5. 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/QZES81930707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4a58755eaa3c4e70c2eb15ab5ba460583bcced4fbbd0bbc60ac070eec04bf3. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QZES81930708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd69d47fce9a5d7ad8b773cd15f326b98d306fb4cadf1657d175f257a8d0b4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZES81930709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522ca40596cd71d1d3b8958f4c89ee62336676114b9bf1129a07472ccadb00f5. 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/QZES81930710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b952d1ba17c5b624b6b52e6854d575e15e82d8355aa0bb556dbd799d5e0e1f9. 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/QZES81930711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160d2db95c396b430c92e38e307db2c8e7cf8a4f9de8fdb55102b832bf54a10. 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/QZES81930712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd49e334a4ff78d54ed4e38755b87fe70c2f87fecd9513b4d54f03db60fec50. 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/QZES71990363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8f884a406ebdba17729fb8b36f18b0e2a6536bde2f9f8fabaf58d719824fb. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZES71990368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9e34bd454f5cf6f69b169f0c8d5c0a639c142a2de4f2aaae67366a45908c6. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZES71990369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8933a0e3675b3cc8f77d309a57d42975feace96ce47f79d2ba153a8bb91a58. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZES71990371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080b915185036cba2d75a6fee763c6b36a24fd1a1efc3676013c0b04cd693e6e. 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/QZHZ32284278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41885c9935628a52a508cee0c2e3833f350778240cc78a34e951e716e2425822. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHZ32284282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ff08f3ca55cb95932a78e49207252b7e9a5193db51df65dc7595d9f245bf3. 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/USCGJ2128468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b80a8317a7b70689c4362a23193f8c985c9a90e685e595e0b39d841fe3de44. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USL4R2008345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec0f97d38c879a393a26200f7456d6165d2a7fbd5a8811e772cf4537f421b4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZDA51880741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11971566fe19d20a8ab520f1e1eb54adeb34fcee5c7eb94ff32a8fa516456a52. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZDA51880742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904ea4fdaf8908d48bcfe8664651fafd9861b7b9aa8dbe9424508184dfab467c. 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/QZDA51880743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccad5e596256711fee51f1cdf8ba182b95d2cad60296c69d1ac32c642ffa801c. 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/QZDA51880744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3801ae9528e595425b06dc89e17518772810c705dc9c05b7614228bbd2c95e8. 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/QZES81931675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d0580091fa65ce1e52d35ec6871394bbcb5b345082b0fc9eeefcd7e16711a. 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/QZES81931676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60704977bb708f9ca07b3260870c25f859d954e606aebff32078698536e15d06. 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/QZES81931677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b598781fe7361059f3ab136843218983164075b9aeef43be8817af9a3d983. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZES81931678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc713539cced9e65d3897f073b336b2b6e5f93888ce51db56323484b4a1daf1d. 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/QZES81931679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc88ab295f0641d92fd7fafc369bcf53fda72883a31519b331d4ffcbc1919f9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZES81931680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffbdc43e3cd47eeee4c156f5566e5e1d01a669f08d1fff50af00092ce634b28. 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/QZES81931681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e57e7746fd71c9a0a07e845ddd971a50129d3cce29229d278f161b3b21b3ee5. 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/QZES81931683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58f9367df15548e1fc5baea8209d54037ae989e5ccab773e86f236e0104260. 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/QZES81931684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365fd9cca7d950f1457a1cdb924716b91f8fcebe3670379cea5345d4a00de02b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZES81931686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da1b33fba6263e42cc1e39ef9a9f33c3bac1e8b4684c3ac49f8e88800cf5ed. 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/QZES81931687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c70c9ed65f7557ac4be5b2fd24594d5b86753fc63d06ea6a1197acd4c7c4e2. 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/USHM82027674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffafb5ccc283201d221359050f634d0a53bba2e7bab60afc1d6e90d0aca927. 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/QZES81931689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ff3486e43fdf945b0ceef05cb53e77aa24f03fc134f91791367457e624c39f. 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/QZES91958005.