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 0x8c8791e15200b452d2e78fbc322808ffb084b6f2a972bbad8fc6364dc8527f6f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74ee13ad-a96d-464c-ac54-e5035872ff53.json and https://artists.proofprofile.net/proofs/artist/74ee13ad-a96d-464c-ac54-e5035872ff53.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 0x0c79da9fca61130a30d944d08f3c961d7bc411b2fbee65f78b3e673528fd9b52. 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/ES5120300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e819bdc32a627123a87a845d3b1212daf8d8a7f0085e164d7ea7b65337af7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESUM72400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf870ec03ec2c6f752f78fd2a8e10ab3621ca9359cd833a525d64f99a690e87. 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/ESUM72400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d85d616e9341da1fadcc8a9320954107a2edec9dc71b07cb3184ad9eb3040e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESUM72400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311a0457160bd24bb33dd954b126a3d463d6ab925688df6550815bd8cc51263e. 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/ESUM72401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f267aca7deaea4781aeb0c5b8506262b9d1d8850e73ffa404449e98f2a6715. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESUM72400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4b1511afea3c156a7815a1557158f3e9ba3d47afac24396737bf866f2ffdc. 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/ESUM72401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb470cb375dfc10493060765b4103fca78a68cd61279a8d295dd3cce3cacb3bbb. 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/ESUM72401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59cfcea36d000c8a9ff4c27c61894034b17a9dee04dc3996809cfa045d787f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d1aa334ad7d560ac340590ee09c32ca67f6e37ab132387d6f5a0d484a0b5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESUM72401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2782d10dc2a5f1275f2b2596e56742d682e6f0b5a93529e6c9e6073b3dfbde9. 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/ESUM72401004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c8d0eb4e9b82ae0fc18d833e890837a2fbce9405e0f591a99198e5cfb96de7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES65A2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94a321adabfba176da1c379e5c06b53b5f03dc9af5d280d00c61712c26a8521. 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/ES65A2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4921eb3ee26a7fed49f39deabb52c30bc7d8a9ff7e405f29e29a20f69fadfed. 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/ES5120800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce130a1c0eac0c74b36d211196b4b7ac5c084d3d09d1e1b27f8a22c452e6a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5120800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ebd5a7df3d39123e766797bf898845817ce08031df7bf737d385f56fa7daa3. 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/ES5120800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31ba999d2a9ca069081f7e004280b9df3d5c7b943b11ecb595b8b8f0c26e14. 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/ES5120800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e492b2d8aa915976d4527b424d515feac8bbc3eafcc2dfedf816ce603dc0fa8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5120800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4f80306f1a8487de1b508e35271f03efbc9f7d86ef4b5b9c8993dc4dbad836. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5120800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21231cfe4003f813388cf9dce6050cac5bac68a00217aaad992a62a04c092bb. 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/ES5301867926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dcccf4402192c7218657b0bcea4e8992da996e67801fa5b7a3cde3dd1dbcef. 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/ES5301867929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b02d81876555b0c58fa7ab82418c47fda7b626f840735f996e120102cae460. 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/ES5301867930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92ed5405469b9459c6891d25b0ccfc7f4822ed4322d0db3da13cf9b096ab4ac. 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/ES5301867931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ee2de796be763e6ccb23e5aad773e12961fff1d2e308011f6395e739cd8a4. 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/ES5301867932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe952395c437d9fff090414a1956e79b427bca0339bb2eab46bdecc274561ceb8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5301867928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aebd5dce2b18136a4022d661d3ceeae1e090dcd2f0c2bcc5ff0e98c47b52e5. 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/ES5301867933.
La Casa de los Rincones (Bulerías de Jerez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3797a178e76a40554003bb47b83d28a17be3e4a65ce48e7971bdbae58bdda15. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5301867934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6007e59ea18980fee60e906dfaca8307ab189cf486d094d77354491e7ce07. 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/ES7731202042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a6c80c1026fc003c411e9fb4e93bd47e79b450e1d75ced4eb7e23691a9fa0a. 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/ES7731202046.
Bulerías para Escuchar. "A la Que Está en el Calvario"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cad67b5fc831a2b354684942acbc9855ebc09475e760cde39c01995d88a75e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES7731202050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18398111da11c341cad9cabb2b68ea8f6ccaf27e753e58290755051d2bb19faa. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ES7731202051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266bc32a17458810a859c3760a93ffcb90df26cece457b28dddb88a1897e81cb. 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/ES7731202052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd7751e96fd05bce2c765e4d6496abcd9a54edf525c7390f39e75e0e2c0c72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7731202053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19043f743d75a3d774c2d11a56871067c3f4fdef4a936271282c5cb08f5bc6d. 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/QZHN91970393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cad82ec7aa2f875ad0f6e58cfab23d8369f35d14707c8c8db26e70e9fe0fc. 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/QZHN91970394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2fc987f81caf87b2221ad642797c0d4d8bc8a2aaa3752a29d09ac9e17e014a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZHN91970396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69c557c6e031354d53323ecd50856e4489831fd88101811d83699d8fe89a611. 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/QZHN91970398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3aad7d49466f75330a576470a681ad3e3dcbb68e13c1d24316cb9db3d19221. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN91970399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52f972b4b38e6194e636bad8bb3f6a1037fe9fa53a10bef7af7494a0f4cc2b6. 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/ES7731214001.
La Puertecita Donde Yo Me Arrimo (Tangos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec695d14d5362d3a60cb689305194860c8007d36e5d6018f1607fb93be2305e. 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/ES7731214003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345664a21cb140e9d7943886049a55b36ba5798113c69522011c6b800dad3810. 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/ES7731214007.
Pasaje en el Tiempo (Colección Paso a los Jóvenes Flamencos Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f868f33b34f555740d28aca400cc8e339070ced655b93766a095816f0dcaee. 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/QM4TX1722106.