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 0xc0147633d2607492a113e239d33b97b56b92c475c14914c7e966bad565eece99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac3c297c-dbd9-4ec6-8bc8-16592dc62192.json and https://artists.proofprofile.net/proofs/artist/ac3c297c-dbd9-4ec6-8bc8-16592dc62192.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Winter Nocturne - Easy Listening Music for Cold Nights
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 0xf39e5af3e5a3e8eb7b5e4b9e42a41235aa189c33a9a2ee2456ec8ab3b4f38b42. 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/NLHR52138002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aea44dd78707048db49dea096af2b65caea36493b31ba711bc23b352c68a724. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/NLHR52137999.
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 0xd62858e4fe5a35016b79a49f93506373e9dbca7c06cee7ec5653ee28622c197b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLHR52138003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0afac46d65ccc1b36384555533161777f036e16d926491d4b2c75ba6beacf8a. 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/NLHR52138004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3ff804875f83cd46363625f8ff9c03ebbde4b7e6afbbe197991f1cc9e1b8b9. 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/NLHR52138005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31144217adf83296866734dcc454c50052f711ad632abb40277144a58991c76c. 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/NLHR52103453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652165f58278099fd53803bed31e479469ba406a74e76ecce0dab92b984544d7. 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/NLHR52171486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf808bf7c54d351821c64eb978c33eda2c2d3c7de230fc6c023ccfd33993abed6. 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/NLHR52171487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9103ffc36fd8d6d96d8d312e360676566a5435342e3e3c0171de6f3e0fc533f. 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/GBLPF0289113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1d5f025a0daf54c424fc8561ee4293443c81bb55322be7cb7e665949f74616. 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/GBLPF0289116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce772db08912acfe09a0274fe3fad64d83964cd18b80f7b684ae6878e54a35c4. 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/GBLPF0289119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e73aedb32a8a6f337de6984f164d32f0434633e30abf1691d0e546a73f12b. 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/GBLPF0289120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b4734be7b33b6d24132c067d519461295f15b2a072dd018878958aec853f1c. 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/GBLPF0289121.
Czardas - From the Operetta ''The Fortune Teller''
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775601ef9c370c52ac9da1914553e16c705a575cb29503c18a2a4d5734ded3ea. 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/GBLPF0289125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c48872020d5d097cbffe5c412ce84a09967e113d03e0b1192cfefed1944031. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBLPF0289112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c97cb11597e421592d6a4a7d92cf24061d77c31b69ee43b7cdf4f717c2efe8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLPF0289114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28c4161b49b5573d714d1b888d64c64967a6e9a71ccf8dc11e9985faada51b1. 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/GBLPF0289115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00136e33d6c5fd2db43f5cd66f322e69d72e57c0256a0bae207237006a9de97. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLPF0289117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35fa6dc2c457bc0f5fbda206eaa6107f8d4544c7199bfa4aaa6e62c261eb070. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBLPF0289118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e6a1a6cf373a7e0265e51bd1e5c7f2afbb6a8f5d1c9f20d63caa47bac73d76. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLPF0289122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565de2db82e79c9010872eb30687d6b4cf93758b416690f2f66b87ad91fd5f3c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBLPF0289123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ca23b8ba3ec06625cf7369d768627cfbea7f385c87f50dbf37b9da86f43933. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLPF0289124.
Kostelanetz & Previn Play Rhapsody in Blue & Concerto in F
On The Beautiful Blue Danube : Famous Strauss Waltzes
The Best Collection: The Magic of Andre Kostelanetz and His Orchestra
Tchaikovsky: The Sleeping Beauty Ballet, Op. 66
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5030f57fe6b94715e8a54eec4435267b9f89496185f5b549273d441a64f5bd5. 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/DEBL60673116.
The Columbia Album of Richard Rodgers, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e874dfa1e65c3fa43bbdd295fd3ca51468aed4842df895b2ff79b1d2429087c. 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/USA561036760.
Carnival Tropicana (1948) & Lure of the Tropics (1954)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c9b194fe20b0d6b0230d653ff9c0becac46379b73cc7d9882690dd1dfd0b9. 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/GRHR10954305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d5e5eb50bcc0ee200d879f9a957797112b53a23db47d2cabb4de1b953b2c5. 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/GRHR10954310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc981b9392b3fd7d8e02cca6f62a8b638bfd96f78f79288f98314495d3bfb5a87. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GRHR10954301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad760375255bcba3c188ff03c54800a5fe45bea0dcd1c24ed573f0e14dd6c26c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GRHR10954302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8dbf7955ba5a5807dbcd5eae72f718d2ff99d02f2e43298dc81e3063f1d380. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GRHR10954303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a87a63582ab56ce91e8a70b2870556e046ead0180fb40160156812ff934ff. 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/GRHR10954304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973b3ab6a9477340010f5710f66ab411058f57aecc3696cbfd3e5a9e3d23fd01. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GRHR10954309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbf0bbb5feb851396293fe0f3f99b4e5b1b8b9ae3db8bf7b96208f6c2931682. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GRHR10954311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c02d479608a4518310f01a6dfb300f74fc3eae76e221821db8683eb1ad28db3. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GRHR10954313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e549624b1cb0ae54e08a22a65cc3c6b06c0bd06216ea94bf1829f85485065db. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GRHR10954315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d88e26273c3e3dacaf5ff87e07136935109c032021d1f33b991975d6edbf27. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/GRHR10954316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a4a747d5c28b3cfc1fea48abaaa9566a295d576eaa3ff47717c1d482767d48. 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/USSM10112603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7837e05c82f95de40d57c11926e2adaf76e4fb2b19c32e54a0d4cc67e34d39. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSM10112602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16e5becc2b312012f739fb922b14def074d042bbaa5ae39194b92c08f47614. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USSM10112605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf832e6dcef353e2290e741810779b2194d1947b4432cd144675fc41c8f584. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USSM10112611.
Les contes d'Hoffmann: Les oiseaux dans la charmille
Soprano Arias: The Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a7506b90575e5c548c5ab24e9ee9f0f968380011fcaa77fdc5595acca38490. 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/USSM14700080.
The Golden Age of Light Music: The 1930s Revisited - Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8112a43829503fb0da2b5bf16b0957b6146409e1723ef75a9b01b81539e836. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH6630956313.