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 0xf1a0054924f6d33b27900cc7df13c5a975037c4df55aabc4a3ccfcf1259fd86a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d0ef71b-f5ca-4941-aefb-9f2ea04f7bcb.json and https://artists.proofprofile.net/proofs/artist/0d0ef71b-f5ca-4941-aefb-9f2ea04f7bcb.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 0x46a7c24a1fc96313b84c4845b2878671c6f5f7215f3fc829f4fa2df25537d4cc. 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/FRX872370025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aaa3331d161c1f456b541c36cacea1e34a2f36ab70ea924da78020185b9981. 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/NLCK42227387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb9e6c88771b15762fbe5bdde59c7ec9855c29f9ddee5001ac250405e10c26. 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/NLCK42227389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ec0dce6418832ec18c4c7d9198ae8c45fbf664a0508a5053f11d1a6321302. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLCK42227386.
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 0xa4debb4183364b23b33fc26bec47c188031175ff5ebd2ecee2db8db84722a5c1. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NLCK42227388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed6d4e0420ccb51af6fb37aa855966979cc57987e3eaf4f3914b2f2c494cebc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLCK42227390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaad5915b868e6cf93416010bc979d59899abd6ff816560f20987a0d7f19988. 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/GB8KE2209095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014e638329b4bcd009ecb6652fcd95b5857bbf989492e1e91a9ce6d77a881c50. 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/NLCK42214005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb0899fec9073fa41d9ee9c3961d529932ae76ce0b97d28031014361fa7ab4. 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/NLCK42210456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f19b5bf52f3f8c3a54cc0a5eb9ec3cefb20b3992c7dcd5b7829316c11e218e. 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/NLCK42210458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73880287bcda521a0d344f7b716e03a478f7cabcda8c5fbc9ca9fd5b01a9fb81. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLCK42210455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de3a2bde4426fb52741b77b34e0b4d6e8b844c49ecd04037951d3b771cbc1a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLCK42210457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5abc2f4ae54b8283b20c9ef29bac505d853a0421119fb4478be7f2a386aeeb. 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/GB8KE2151885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9fc41a3234ebb1aaff59175bb23a44d96017ec5b93044bcda6052349f26b2. 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/GB8KE2151886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d128c7b298d2c88307cbe9f4a50f1d7169fc0e44b9b4048511ea2b1c6ab0b8. 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/NLCK41084263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764350cd74c295ba5b1816542653224499977067a6fa4872064047deffec7a3. 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/NLCK41077801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765da870165f26263822bb3ef79d4fbc01138d7f4c513c3b72fc0b1db57025b5. 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/NLCK41077802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe67f418d2192a4b0e163f85f5d2fd0f572b80c0accc519b5e468fcb6c3f6239. 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/GB8KE1959335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff66867decc4c5e16627d5e3cb09856a3f244609f8efb04850c5a034be30ae. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB8KE1959333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680d6567f6023225d01bfe28c67a68aba33ccadf797094908c2281bcd46c2ef. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GB8KE1959334.
Mint Engraver / The Last Melody (Insom Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138d532bbbbf35e08fdb5a4a40e50faae7b393eeb60381239e561414f1048a46. 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/USLZJ1251756.