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 0x1c51b78e903c7cc4e0ed10d86abed32875cdb8742c0efa1823adbc5ad2d3ce6e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c76d312-b508-4dff-8e4e-c887661ae5ae.json and https://artists.proofprofile.net/proofs/artist/4c76d312-b508-4dff-8e4e-c887661ae5ae.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 0xb2cf73ef048f8da6d26f63086a57179291b713f24f365de3465887dfa6a7b84f. 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/QZPJ32160642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef23c1e594b0fb84a484bfbf8d9e7bdaede3baf398c414144cedb9e2847beca0. 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/QZPJ32160643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203b74f9d892f4bdcf5c0b704198a17ee33a58bb8e0e224ca095447eabf2f3ea. 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/QZPJ32160645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09bcab2db2dde36012a6008b1e273a0a2bcddf4e0c5885190e24cf5e69b225a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPJ32160647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b6a22edccf555e4d4be9aa76de0e505e2bb438fd518a84a1784fbfc51cad68. 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/QZPJ32161255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c5803d45c85fbc7def5a4533d3992d099ab093a07707ae93fcebdad22f552. 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/QZPJ32161257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b76e5a8ed014d714669166864288a839aafaa94444944f5401cf08c1976e2f. 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/QZPJ32161260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9439d903770bf62e0b16b8d8cb6bec06eeb5843b7f13f01a089e097cd9c7999c. 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/QZPJ32160996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f715153e6272c0c2f1e6a98494d53d4f44ebc1f8b411ee46b7c0d546ae8d08. 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/QZPJ32161001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7a0c34f8f2f88b94fa3ec12e93b07272521b40464a6cb969d809157ed3dfdb. 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/QZPJ32161002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd411569d7dac857675d0d13e8e6304ce638af3dda82eb05ee8d936f08ec25. 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/QZPJ32159208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf317713add77f9d3762c82eff61f41aafd28f85d2aeaebd0e239b2cc556b24a. 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/QZPJ32159210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7380602465082e831544c42a1e10aadc2003ccdcb2d65c34dbc3a6b9d94902b0. 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/QZPJ32159211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959597913e8b4aad38f7998cab66717fbd0cac0ec8f8b539f70662bc16b11300. 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/QZPJ32159212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fcd0f561d0b1b9a0d89d17916cb89b0fbc2ccc1e8e22528771d7786093e4ec. 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/QZPJ32159213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78bc183407fcf3deda42aeeeef1c7edad44b2546478a0a3a1f84f4cf598db6b. 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/QZPJ32159248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24dd1c6a03464e7bbefb998fbc5e98536663117cc88d484811d5b961fd5fc46. 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/QZPJ32159249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f620477041ca06203c4968beeee4002a94b989707c564b29ec507ef5ae6690. 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/QZPJ32159226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c611c783c0d8d16795a8668789bcc0783fdb2a35b56b1604c7281b104e5352. 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/QZPJ32159228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1263e9ad58ece5d27b06cf53387fbf3ccc361ee7fcf9e4df552b093b59db8d3f. 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/QZPJ32159232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167ba5b9cb5d46cbdc67f67eff31b0141b26d6a1394a520a2fb29dc3782dea1. 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/QZPJ32157818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33500c7408013d30783208c9d648ecf77f42a12c02668fcc2a5badaa40988f30. 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/QZPJ32157819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29cb3b2cb1143af9e11451ff3141d1cf85fea542c9285bae22d53fbb57377ed. 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/QZPJ32157820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebcc1bcc053f447ee729cb90317b4b57343600186b8c0e38e20eaf4849a78ac. 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/QZPJ32157822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b802f180abba6543120d43108c8cbe81907fd2976cba0dd8d66c24ffc7e05d6. 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/QZPJ32157824.
Kamado Tanjirou No Uta (From "Demon Slayer: Kimetsu No Yaiba") [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe950640c70e429025b14a68b4755904bb56900df3569ab2e14272e50768a83e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZPJ32159233.
Naruto Main Theme (From "Naruto") [Acoustic Guitar Instrumental]
Naruto Main Theme (From "Naruto") - Acoustic Guitar Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b41eb50003c2d75f000e5f2b00924ae03a1e87d60f63d226497de4456206f5. 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/QZPJ32159236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b41eb50003c2d75f000e5f2b00924ae03a1e87d60f63d226497de4456206f5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZPJ32159236.