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 0x4cd7d64e7834b9a62924b8300c97a61ae468d0139f231659aa00c8745e35c5f2. 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/efff3507-db72-4c54-9a18-407ec57947c9.json and https://artists.proofprofile.net/proofs/artist/efff3507-db72-4c54-9a18-407ec57947c9.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 0xf00fa3ba286c409b3446afd4650754414f00067bedf409dfd223ba2ba5170d1b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEE1956726.
The Melancholy Chapters V1: Feeling Colors
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c53b51a7b4429215e8eba08478d30ac5ed836b1661945a2807ad4620c452904. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:38Z), 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/TCAER2073847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acf2b094553e647e31c9f15304c6564a1ec7255c880e3eaaf736cec42f9759a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEZ2028333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5a5be15f09a917b2f767ffcd630ba483b5332a6968e771a49157375d7b436d. 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/QZS7J2165727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fb122d83947fa6e6acbf1f0039f3fb214500b60908a7aa12f7dfdaa3be6dd4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTL92119032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e32d157c0733ccc2bd3dfb612edd3883b0d003d57caa95ff10a59ab14ad9c2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTL92158103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088729ee64e2fac65b7481ef2416122ac34fff4ef71061b92d5bc4dc5b4f0876. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTL92195098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c578babb405f0abb160cae0a7f103e7ca1215f18b97fac5fe884c2f316ea2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZQAY2209906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db52641bea0b0b97a79101694bc85e7e1f37caad4c53b9498c1d22f56fdefa. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:27Z), 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/QZQAY2271410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c81a392c9b62a41a1eaecb6d6783ff105a8d837ec3c429fa389e047c3d140be. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZQAY2205005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a7ab2e6a524f21818d513804c445db580baa861a9f79958a6c9c16a7a0aa34. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:22Z), 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/QZTL92197169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0f3b3cd063f12c56b108e103d8a61e07e05985d7a0d072bc25206a7d54dc3e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZQAY2273652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c9cbe3f3a817496f4bcca474fa4d82a38c509c2236791f662f275bf4625ac. 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/QZS7J2289429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4726ad05572034fd68bd76b566e1fd4f3a8ebe49a2a1dece363c3461c4d208. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDA12300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e102a8b847155ba0b82cef73b781b00026d7a4da5530ef25145c473a1bcb0d0. 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/SE6I32377304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5957204781f26a1139b2d8a7b96f875fc982472d0f9af626a4eaece0677c42c8. 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/USLD91747395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad93e2b799a164265e393f6d98d3828e1de483d1b680622630b4f60c56746b9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USLD91750428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a049b17e89673bfc6f5db6bc7e41b767fa554dedc9933d3f85f1e32f2691cc0. 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/QMFMF2347028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2187c0f02af269a2c4b1cb6b81b45d096fd12cabbc2b5321a6a9fbef2d8a006c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2411297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a5c686b9096a80544f6505f8be29887bd5500d9136ecd5c0aa15e66bdf4c71. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:35Z), 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/QM6MZ2408243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92bbd574f975b11bf304d7fd4ee8f23eb928fde6e27a4dfd2797fd02d8c804a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QM6P42433844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f702d7815cceeec7e14d02e5ab2d9248e81fde9f4cfd257a9196f3f4830f3. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QM6P42433845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8c017a07ecb1ca3a7edb6e23685c16e5d76ba1de9a0ed1556bc4f0d0227a06. 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/QM6P42433847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d667916150d7a0aee08d21810467efe8d2d9c72b684af91fd4ad78ce52f2609. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6P42433851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08700d7ebaf9e44e1fb5c054d78aabd00ce0b87c0a7dc84c8f3ae83611bd90d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6P42433979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021eeb265078eaa930f4556d098dbd63a0c0bb976fff1388ed117253d12c9b78. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QM6P42433850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ecdc9218acb8d3edae9e3f5f99badd4925b8485cad63d13170908d7e8c1cbe. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:03Z), 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/QT4RU2500450.