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 0xe45a7a0801739dddcb0080c370cee606468551a5c386329447c858a4b875cae6. 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/deda09bf-baeb-401a-8a8d-313e117591af.json and https://artists.proofprofile.net/proofs/artist/deda09bf-baeb-401a-8a8d-313e117591af.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 0xb8741e886133b0ea0174303281570738f8960e0c2c873544eca118bb33675c85. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZGWW2040004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cffc89299bbacf0edfa69633bda63cd71955b7e851fbeef6e7b8a7655bc6984. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZGWW2037316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7dd23a287a8935ccdc049dbd28400976f332f19979c1e75dd6c576266a7b9e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGWW2040007.
Temple of Time (From "The Legend of Zelda Breath of the Wild")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed02225dc916f43972195011c1c0b6ff70cd6170e11698485497c2c1ad15463. 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/QZGWW2119701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a41ef10973531e48f1d4471ef1384bfaa342be9d58f4f7d66498f3fcab68d77. 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/QZGWW2126856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699bdb5198a95da1bab0ad10d8c65ff3af615e6b95fb9a32dd70e34f6ffed874. 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/QZGWW2107237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8145209ed88a50dc275ac49b91e86114aecb4bdda6bed7c0ab0184bbedd088d6. 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/QZGWW2107235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b9d0bdc46676c89b31cd1e644f650bc2d7c08b169b821309d7e81b47778b5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:39:38Z), 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/QZGWW2107236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc85ff29ec1ace4b28086a563ebcc10982e73d6c7aad46d80bb1634ca0453c3. 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/QZGWX2019401.
Zelda's Lullaby (From "The Legend of Zelda Ocarina of Time") [Acoustic Guitar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e499908e01294140ee8ff78a861a20fc61d52214a97e45b43a754980adddc. 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/QZGWX2070205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8087d73b1985af083b7ee875a61f7085cfadefe2161e0c9c8f0ec96f34ae4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:21:54Z), 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/QZGWX2156595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e499908e01294140ee8ff78a861a20fc61d52214a97e45b43a754980adddc. 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/QZGWX2070205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247bff85dd1bbafebff2c38eb494b671b558e72d5a84e32439f40c283f945993. 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/QZGWX2019398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a41ef10973531e48f1d4471ef1384bfaa342be9d58f4f7d66498f3fcab68d77. 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/QZGWW2126856.
Hoist the Colours (from "Pirates of the Caribbean At the World's End") [Guitar Lullaby]
All Is Found (from "Frozen 2") [Guitar Lullaby]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3a673f6128e783bde0ab2a5c49f092f07a1005f1bf0480e9341a7e6b36cabe. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZGWX2247564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb6e1211cfe246a8594d3a409a9371c62500f936acb1b1f131e2d7415f697c9. 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/QZPJ32105279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b98319b4a1a9cc9817eb39d629c176f8294671fea953a84f6e920f523ba832. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPJ32105278.
The Legend of Ashitaka (from "Princess Mononoke") [Acoustic Guitar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637a3722af539efcf50727c04156f604abf7afa91f6d5b65f4dddb84ca1ac61e. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZPJ32113004.
Happy Xmas (War Is Over) [Acoustic Guitar]
The Little Drummer Boy (Acoustic Guitar)
The Rumbling (Opening from "Attack on Titan Season 4 Part 2") [Acoustic Guitar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9c8c39aedb5be9e6d7500058419b6cf57e3e2695f8c283b5b818e8bd524b7f. 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/QZ5FN2247494.
We Don't Talk About Bruno (From "Encanto") [Acoustic Guitar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bf89ce23f07efb48d038d280e25c949b99784f3dde4df16a26733f2bbc3781. 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/QZPJ32148599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549490b26242f93d92edc1a6749d08e985672b1ad9b4b51096e4877676226727. 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/QZPJ32148064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3bbe1f25b701a70b7b9ac201254a8fa4530d560021aff723e3495a828e061. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBRKQ2202178.
Rengoku Theme (from "Demon Slayer Kimetsu No Yaiba")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd652bf4522a7d18a7bfd629d3955f17f92ea091fc2b2a0d4ad17ff6d55acd0a6. 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/GBWUL2259643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed124ab532200616737877d92c92d8c77277634ca1dc48d614aaa11c2e80f1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBWUL2259644.
Floating Dead Leaves (from Naruto Shippuden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870199577427025b3b6d9d8119035e4b29051ec658fa98edfec81c0eec05b3fd. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/AUMEV2287066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b98319b4a1a9cc9817eb39d629c176f8294671fea953a84f6e920f523ba832. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:37Z), 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/QZPJ32105278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bf89ce23f07efb48d038d280e25c949b99784f3dde4df16a26733f2bbc3781. 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/QZPJ32148599.
The Legend of Ashitaka (from "Princess Mononoke") - Acoustic Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf529d1ac83046b162cbab92b328c4572e4ad78f46506668abea2a9bc5f8e39de. 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/QZPJ32105802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed02225dc916f43972195011c1c0b6ff70cd6170e11698485497c2c1ad15463. 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/QZGWW2119701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ade3e44f691d5720a207b42c12dcbaf725e16f232192c9735de525af5deefb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZGWW2119703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291f2f76f91441193e4b1f0ab7c67800e7fbb0ce5f599d59fdfa06d4c6d5584. 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/QZGWW2119702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02d64ce2bbc6d28b2aa217fa50c9d2424b0ab5bb22c050e0593045e47c0709a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:41Z), 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/AUMEV2287067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923fe8a6bb8919dd15b6aa1994b9c129b4ce3eb70b3624ee75fa3f39d705cf40. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/AUGBT2221845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749b2be0d2b430edc493f69ae658b9b29d7671fa82002be0836a3ebb0f627fa3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/AUGBT2221846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f4e9d80832dc652f7c71039cd37baa037eca9106f2550e88e88ca0e1478ac. 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/QZGWX2143576.
Tears of the Kingdom Main Theme (Zelda acoustic guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f8292fba598e7bcf0d9309b23a967a745442cc1b31528262d2bcf55247d37f. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:47Z), 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/AUGBT2344129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36163e8fd26fbf0920d28f1a9c65aa14e461c2962a4d1b6e41cb3513800ac9e. 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/AUGBT2344128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc979afbadf8dde24568262a63d72aca268333be337ee91d95f0cfe9cae8d287d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:00Z), 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/AUGBT2361213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2588b62befb8f1dbf0f9436791bff2143a232df253eb1a69f49d180be837e613. 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/AUGBT2361216.