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 0x04268dde90eef738e1594fe65d526c763358be1a9727ef82b8aa83401532b6d2. 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/0b66c529-be00-45de-a254-1f603c05677f.json and https://artists.proofprofile.net/proofs/artist/0b66c529-be00-45de-a254-1f603c05677f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lionville (Special Edition) [Bonustracks]
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 0x90f6454f19be773444d542bc524c2714eda5ebad6b7a0fe61490b5fc7d27e3a4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:53Z), 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/ITG271600456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e479d967d60ac194f3e9514d1ccf17dc190413e85f95ab45b0cc1d8e86202d. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ITG271600457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1548d3ecee39115a94167393cd9c08efcdbd5d554e92a2f4f2c7241ecefee. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITG271600458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85776738fd1d38a529aa3c724c55b0c056379b4b6aca291f8f7c86cc4b6ab09. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:54Z), 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/ITG271600459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fcb509687467f840b61780b9453d0aee5934d02dcb78f236d75ca1b40bfe66. 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/ITG272000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb694351ec59855156e30195f079c87e3709449d31a7d091cf9ac38ee4d1b2008. 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/ITG272000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2953a1692b2e92813fddff3dcbd7a25c986bf35b68ee81efe2546936bb8e1db. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITG272000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ad0bca243720353998d14aaff34c3eb33e4f6d985e6b29ed036884f46c9d6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:44:57Z), 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/ITG272000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd312a9b223f4d83d2a0179283193307b070d9c4dfbbfcc5b5ad9c4c70c3db. 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/ITG272000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e32332a09d3845f96b3e3ea9359066aa7371c816174a359ab1b31d77393f84. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ITG272200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e72bb722a3c6d049104fde3dd4f1a5ed529d351282c74288429a2a272d52eb. 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/ITG272200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39803e56789055e61898a3d1ad17aba60066feee7c8b66f0ac1f7fae45b030be. 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/ITG272200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea362451da6b302412e97856f79ca70005f92648818d9ddded817ff5ceaf131b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:05Z), 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/ITG272400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001576ffb5b002b3bc51e57d023ae1bdb9524c8c8028446890778ad93b0af564. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:34Z), 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/ITG272400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48102d72c3f74136c971e69381e45ee07733f81ee6f085d89d7e7d56ecce90c5. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/ITG272400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c0958d34368d980ffe25dc976003b93c7fe346a896b6afa2d21e91166cf2e4. 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/ITG272400616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d84d2f8759c7ad2d46f3d2b00f67ea4222477a4edb7a5aa2ccd9731ab4d213. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:36Z), 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/ITG272400617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495a8a1d35e21527e94fb47baeb0dd345693f9f358d19abba3c191c69bea0dff. 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/ITG272400618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fdba73759e47f2ac673e32dd41e194fd6247c79c59e5e3743331f26562b331. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITG272400621.