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 0x62bc8e43130cd2de98162100319d9aadf8d4d49a3ff92f58772708c01215c282. 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/ab30a927-8311-4ea2-8416-3c64fc1b6ee4.json and https://artists.proofprofile.net/proofs/artist/ab30a927-8311-4ea2-8416-3c64fc1b6ee4.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 0x0cfab7859ab8bc03391e2d6453f7ea033014bfe16ed921eb2085b799d63e4d53. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCACH1521713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eb0e41b6cd122c3af0864f4e598e33e1049274af4bfb2074646f686aade865. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCACH1521715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863309ea8459c12a3629e550458091f74c4dc30ecbee70f3e676ea2a464b3e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACH1521717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c20b680129e31286753610ad92c02df058009a8405e1b56466360d634eb171a. 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/USUYG1120655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685c49b627bbb93cf97ffb616640d66669a8c7e2919396dcf0c421f5d2b9e9c1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USUYG1164653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef47079ac65e99dcb9ae0b81e412af1e5884e96fdcfcb64f19dccff961427618. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USUYG1167812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50adce8022c4c0afb87f702d1d4d672d1b086b051775f24784fa1ef8f33f3df. 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/USUYG1183514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec8bbcd376ce5f4a59e8fad5a332f12860766f62f924928aa8a336c04cfad42. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUYG1183535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb168cad505ae559d153abc176c4cdf796ca411116f5c2ef733908e5753a4c89b. 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/USUYG1183537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3136456e97c3a99f9a8b5cd1edab5e7c54b019863f3cb72d03c1ae22b349cd5. 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/USUYG1183538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d87c1bd1c5af8135ce1f1bf7c3f8401feaf51edc6d93de8cd6f94137d5092b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USUYG1183543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc555fe0e985e0a938542d54862d38e7fd2c002c7d4ff8fd361646d4b0361b636. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1204250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018533345ecad721359f6540e21bc1677a5d7e2f39d459b55343fd2837d295c0. 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/USUYG1233486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9325385723e1c09f9de76005ad39bb233ca29e58fecda6ad41bfdef201dfa76. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USUYG1237848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2353363ce7444052ba09ca7bd7d4e0f987cc512716bc7650fbfd9139b6f985d4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFYX1931218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20016e298f02dfc8684632f6ea703677e32e0ecade266fff9d8c9f484067434e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZFYZ1911202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640cb247d7ab458951fe3d5575423c72daebf56ad1a873c60938b5569b0dbe95. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZHN51928559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4b8f8902812fb13f364d05a206ffa564eaf48d69ae5c08e4e251dcad547a45. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN51928560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7316ab3278daad97fc6c2edd054ba40e8abe5c63741e9c5cd921292424bfdc1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZHN51928561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c397e1e162c63749c5795f0105f4662b89a36f00dce613451a77b356d789e. 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/QZHN51928563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e1e91f8e0ea60de5512ff0919ec5e4e92f51b700f94fda6cbd43279cca451. 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/QZHN51928567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbf5018ab324946a15705f81583974d257cc74e9f3f8c5763c49240254a11b2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHN51928568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d9fc126cadb7ac57963d0bcd13653cf7ae096d636ab8497894ba2590112bc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN51928569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ad356b5af752d2f5e0ebd09560efe7f0d27ba60a8a75092c9b4b18c238fe00. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN31956513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f0a88a8ac7acc2384ed5fed2f92f0a0e26c5905d4c91b4cce8bb3507b4b54. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZES72091461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08130f0cf6eb5ab950c2675e4e2cc2945c559d9420cf973236c566162d4cbe9d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHN82038558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1f487224a76adaf53459ecc5e2122b56bdb9efbfd937721566065f54590ffa. 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/QZK6F2074777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db71b0019943a6f46da791111ddb5611ce2355c135cb9732d97613619c817f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZK6F2074778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af0d89803c506d85782bb53cd76dde0d4c91b25ecba95e98028f1408c48d5c3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6F2074779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e3043274751395e4bae9db5c9229f06f8ab44ab5d896340ed6e2560061ab23. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHNA2145900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31151770a3f9b2712097667aaf05e998ece7b981ebbc7e341fa1247dfe4cfeed. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZHNA2145904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb1cfb3af0575e946af292db600264806b29a489aee08db249870c65550cac. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZHNA2145917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8328de031ef3fee94027229eadab8bdcbbd7ab4a04b69d83d2cdb02dbad86402. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZES62274215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a322985404115f132fdac003948ce7ea339b9bbcd11884d1dc82d43426cdcd. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6N2260268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e813afb6b1e133341d215c4dab5612c137bbad1a486f998dd7204d82c17c84d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZK6N2216720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d93beca23870a17c3e0c6bd2d986a652ac51d3b040f55ec7abdf87e1d4c15d. 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/QZMEM2208900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7809cbae2f8e988f9011e96d0ac6ec6f604166a1817e860e6e49ec5122ed1b2d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWY2246154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636a80bdcc7892657fcd59795121a0cba2bbcf24d5ccf6ed2faa0ffa244bdac5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFK2329445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d84ec4b49089983e885698f2984e7edb80600836bad7403095b70251012b36a. 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/QZFYX2549786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb239cc6fa0236985d528e5e8e2631f10209c17031337d09e502cc37a360121ab. 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/QZTAS2584846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faf95fe6715a726afee12bd7f24177cb5b9f574ce0c1d07feffc84562d59c90. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTBA2533755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9dde3aa619cbe08d837f782286c69ae1084e536adc761e93a2668f614202a. 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/QZWFT2515756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89166dcb2d8adf40708df06b54acf026bfd6782b13ac5fff2fa4aa9bd4774403. 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/QZZ7M2552718.