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 0x954f39a056bb5cd5dea89d948d4ac46020c2650e859d62b0029c4029fa09910f. 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/51dbe5cc-afe2-4fe6-855e-533e798cf268.json and https://artists.proofprofile.net/proofs/artist/51dbe5cc-afe2-4fe6-855e-533e798cf268.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 0x69b86962af51de5aa14e9d0fa5918cf4e9973654bc6f15ac7944c4423fa9ebab. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZK6N2343268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a01af7d711198c34fa238784d3c7109ecc02863ccba75d159ecf31d040a89e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6F2362761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0210be8b5cebf8b3f79b524364a1eea1fc5c497e1632b7288a8fb0e09c8f43bf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZMEP2359016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746279ee55f92c33771229686acfccf5921e01009df5bd7007143ba7666ad762. 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/QZNWQ2368309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefa8d4c2c86b1ac434fe6e9ecaa9f180dfad552f9222efbb796139211e05d65. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWW2376616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788d515e2464032f7d74fe8ab5e2d0b5764b602fe25cc46bffff2d7e329b18ac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLS2389259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15071344399637d2ade971a681e0098bdeaf30e8d908bbaf1308cdd57d40e33. 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/QZTBC2355929.
again in the 70s but I don’t love you anymore
everything will be alright, smile, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1343abf4f292ddd17568f315cb09243935bbe48f2c9ddb5872ca4f887862ed. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFK2305968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fe9849ecc51e9b3504d827a58d352622ac101e12016dac585131fc182e99fe. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZWFK2376228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347f94df07c120b6bd45a0651aff14440200862a297d78772a3278c9acf9a995. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZWFN2387366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e81e2237029b0a7a4716355602628a008d395fecf670ba565fdf48d566077. 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/QZFZ32445173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e8c14012948040d46f0772cda51c46659395945394cbf104a0de392180a1c. 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/QZFZ62498076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc904e3f3cc5dc99916d1a58813b245accea21d29d497d7fa6e82e8d078ca52d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA62472219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b7d546111160a42bea18140889e88fa7905b2ec84f47e2e340549a762b3d45. 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/QZHN32462805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967c77dd640f7f1bb9a46291e8369599b9d642a152603d6959c4084333bced42. 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/QZHN92476923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746279ee55f92c33771229686acfccf5921e01009df5bd7007143ba7666ad762. 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/QZNWQ2368309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc0e76f698489dd17ecbf15175436554b9d82403f17a59178b985631ac365a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:29:42Z), 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/QZNWS2370619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9953f994b190e59ba53e3aa772cedc7dea0bb1426fadde2a1975819896e25. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZK6N2463097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5186f8061987e9303f490c8f11a1d22568dddd7e65a06df1f9067e0e0014499. 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/QZK6K2400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b2c7cebc4e7fafa5e1039387226546ed7df4451a7e84e8cc2bbb8cbba9a09. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:12Z), 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/QZMEM2455501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe542e22c152a570856815b2e9e4f0bcd72278128ddf70d39d4989d635c5e295e. 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/QZNWT2405568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb427451ad4baece4f2860926dbfa1cd849df9b746713e1d0466ac497159e5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWT2437466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe312a053f6e3d576f5b81fbc103d3bb1fd403ac97e5beb10580c99e1715b060a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:23Z), 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/QZNWZ2413399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856aa0cd3156e035c004b736cd3c4aecdca6f84dcec1d4d7c1aecda2fe5a6493. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZRP42460523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cafff87388a1a154d34f2bd154d845617324b22f1279695350934ae35dafe95. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAU2448170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1987996e15fcfbf396bcbd9559ef8f1d3c549b9a7581a11e82e8c47f547454. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAY2463683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796829386fce80e048befd5f02a8b367292f938d17e39cdc0147161c26afdc9e. 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/QZTAZ2452291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ebf54179fa1deb58871209423da927e757573a810ce2fc12a0b469968abc12. 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/QZTB82438501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3039b4d4d17a345609f2975c73a17ceabc79eb9494236e39fc2dd5cd07867a1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBC2498457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306ddc3969d3c96abc7f3c2616e980e7c9a7aa664cd28f4860206ec095f1bce. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:12:47Z), 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/QZWFN2484827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34685c95b5a99748c65976229d308d86edca76f77a7cba675f02ff018aae2a83. 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/QZWFM2493819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0444ff66be1b2c029f1555f13c5e51baf10cd0333331f21e4ecb7a411dd28. 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/QZWFS2462244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5330637562756588cdbe3705501b76d6c57f252f90c9f48f1c7ae0c474572804. 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/QZWFU2458180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed626248ba774890c4b290eb8016d5afe334097116127a0458e9a81877c2088b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZWFU2486676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f873561a337dcc8d76c9afdbb599165769cd986c2f0f1b074fd8a26dcd6eca3. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZWFW2480111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907c031915474fac6047cee48e13e5646fb8a4c57d2b7981b84102a64d12ceb5. 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/QZZ792450812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b438a910fb76cde7ba078820eb5465b4135f8a0b9c55e38dd718999df46d57. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:29Z), 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/QZZ7P2475932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aadcc49c3dd377f788c8fb1e3cb062e467faed06ede3460c62b590b8f0a800. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7R2499165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552af4dc12c9befb467a22f20499e5e5e674890aa18e0a2057fbbf869dff4776. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:02Z), 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/QZZ7U2461370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9babf1b488e6269937ed0ebfbc5891d3e8ef2e6e1b44caa8b2b15f1dfc8ba. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT3F22412530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91170778ee2253972a519d28621f237cacf93fba632ea369226b52c700b74dcf. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZFYX2510464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf74bc4719a69101b7680401ec91f800b0468ecfaf373e3503dc42749b8a5fe. 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/QZFZ22524048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b41cb618de56e6c0277f2ef14672efd7be52696f24cf8932230d0df95e3221e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:15:30Z), 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/QZFZ42540360.