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 0x050ee7397691e502c04e16b1a697bcda69c4787622504b9c50fc23dca9604995. 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/93835bd7-0cf4-4c71-9c03-bbb14ea683b4.json and https://artists.proofprofile.net/proofs/artist/93835bd7-0cf4-4c71-9c03-bbb14ea683b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2010 Texas Music Educators Association (TMEA): Bellaire High School Chorale Women & Montgomery High School Varsity Chorale Women
Montgomery High School Varsity Chorale Women
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 0xcb0c79553f96dc9c2c206d820aa16c42c89a8378379d47e1d4e45cf63ff108de. 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/USVZX1220211.
Wishes and Candles: American Christmas Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce2c15aad9a5629a979e232c4016748b46f787d79a5416f2cba55fa33ac7648. 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/USWSB2100103.
Splendid Jewel: Choral Music of Stephen Paulus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c83de489ccab7e8db5e7107e7037f393ea4fb04ee540c57a9f091b0f824ec9. 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/USWSB0700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a73be47effeaada4d6c11551fc3e519e2e00fc4f18c3f1e221744820db7bc9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWSB0700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6817b62a6373c82a44b800955925114908e0625500ffafbd9eae464e2b354bcb. 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/USWSB0700110.
Hymn to the Eternal Flame (From to Be Certain of the Dawn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6b4598c021a2becbc28c046ba580893c54f4482214ca638a9b172ad7ee9de. 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/USWSB0700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b8842aa98575a66df671f1567e5bd4fe1fac4cef76900a12bc605e910c88a. 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/USWSB0700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59591de91e60f09bec34b043a2e51a3c827823ffd61f61aecbf0e0fa1361755. 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/USWSB0700114.
The Choral Scholars of University College Dublin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60e6de28a37eadea6547a36dc3d4bd565d1e1eb731903c3a48594daa8542bab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLLH2064303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60e6de28a37eadea6547a36dc3d4bd565d1e1eb731903c3a48594daa8542bab. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBLLH2064303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa61c24ffb25fec9d82d310c1e6b2a00ea706295874bd7e8259465b0da4fc6f3. 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/GBLLH2064305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f294ab0a6806f6ad74ea30d3e833522f59bba22dbbd6272603cb733a6cf4005. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLLH2064302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491d5e7a46ad12da898fa1119895adb702e9e36554f41d05ab760f9cdbca172d. 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/GBLLH2064306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2e57ae4ae3a95811b4d5ecfe9f3582f907b9bf443a6e06a16a25107ca23dc2. 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/GBLLH2064308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ae29a75a109555e2c36139d2c86e489032e54babe899c1d5f5298529935b2b. 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/GBLLH2064309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efb909c0de7e2eabddd129398928e6a2012013ad90befd16de60dc67d24fa6f. 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/GBLLH2064310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c938ec7d07249cc76db05a4c1c0c1829dde9cdd353333351d8c86bddff64aa. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBLLH2064311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56580ed54caaefe2889b0f205c06ddd7148a6241da8430c571adceaed53df524. 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/GBLLH2064312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9e21118eb6446294f9d7772a7fea36f89d223943e8a5ec7b7172702d14903. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBLLH2064313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa944e522e32130fb31a1f1b51ee3aa2e49203d050a3856e98df1d9fbe489f6a2. 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/GBLLH2064314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa0c7530ee945009f53254c8d8938752ab6f5615dea1106ebf268aa743e1d2. 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/USG3E0725202.
Spaseniye sodelal yesi posrede zemli (Salvation is Created), Op. 25, No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ef7c3998220e35044d880d459fe3f5388d805bb4ce5e1f2c63d80078914895. 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/USG3E0725205.
Lux Aurumque: Lux aurumque (Light of Gold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56baf0660ff197e66bdec6f5558cf22e8598e1cf58e4c1e313a80c85990211e. 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/USG3E0725208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cb7799caef85b50fbb85a5e32813e492aae2268043ab692e5afae22eac0815. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USG3E0725209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1605acd09bbf4f1dcdab8554cbcfc4d8787b2cce75691ed56cd08aa9293723. 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/USG3E0725213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719ec9fe68d25dd80ae512c466bb4bf8589500046b3861979ce387f5e0c289d. 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/QM7AT1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2ea1012bc5748fbffe3ed0af476c181ba8747ea8180b38515640757bd8658. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7AT1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71e588f4aa15e2b031d67824c891d1eca3e447549ef63dfb76e4ad6397f38a. 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/QM7AT1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7368d0f063be9bee295a746a71a495594c0ae7eb65692dd8f66bdd0ce8621e7d. 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/QM7AT1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a2c4f88bab39b3dc32a1cc3b976f088d165d697c88543084f814142b27789. 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/CAPFZ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8663ef15154e03a545e517b87d8642b5a1040df317bf9428ee39571686a7cef6. 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/CAPFZ2000012.
To Bethlehem: Motets & Carols for Christmas
Christmas at Luther 2019: Whom Angels Greet with Anthems Sweet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008a38229c9e3831a2ebe05019456b19e97d23a19ac491a14c32c400bbc6a0c9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USX9P2066458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf79d49a86f422e15007baf60409419dcd20a9dc685500498c2f17d75cd7b02e. 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/QMAAK1999096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe978117cb01e4653091526828521633f7cb609ffc2bce263bf9662ffec9b95b1. 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/QMAAK2251688.
2015 Texas Music Educators Association (TMEA): Cinco Ranch High School Chorale [Live]
A Complete Treasury Of Carols For Christmas