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 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 0x37c0b194a4c89f79c88c90d76b5f5b2fbebdbfeaaad64eb4bbc9de7073f2a424. 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/1599acc9-a2a5-496d-a4f3-b59e648dd18d.json and https://artists.proofprofile.net/proofs/artist/1599acc9-a2a5-496d-a4f3-b59e648dd18d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xe4d9e802ac3f5741eab570df037cea55cc68e03eb9b22bf9fdab86460caa93a3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132623 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffec037d5df1b14e5e17586101f1f07ecd620697532af15d50c36a1205c2d49. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132624 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15a5da0feb1af553f04f85516071823870a5620c09e021572d1ad38668db90. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132626 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18178e299ad23f3459fca8141da7f59b5e38e62b57c535b15cfb299711d8c4f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132528 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b3d5966293b496cd69f292538b1ad720cc54870610c7fce11e4ebd99bfe890. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132586 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c9a3c6e7331805cba7e26f357969fde31a2e8f1f49bbc92b5fe12fadef6e7b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0132589 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bf90d1a8fe7c9ec30d0e44957ae46bcf72a4ecbc9e5c3878f7d11ad7a0c5f2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2223965 — a six-check JSON result.
Fairy Fountain (From "The Legend of Zelda") [Lofi Version]
National Park (From "Pokemon HeartGold & SoulSilver") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760679097095f2c2d8f49d7e73546cc88193e0a5333fd3d8f0a722779051ad49. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242563 — a six-check JSON result.
Cianwood City (From "Pokemon HeartGold & SoulSilver") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c131a4f812057f5d85e34b3055dcd69b8f4a4e3aeb612a4b24f3e184c2bd4b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242561 — a six-check JSON result.
Violet City (From "Pokemon HeartGold & SoulSilver") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5565dfe9295ac12fe3ba43d41008bf79e98c81428e7b2d89c37116016c28a37. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242566 — a six-check JSON result.
Eterna Forest (From "Pokemon Diamond & Pearl") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3250aefd0b37a435c87b94888590b8511a95e5257fcdf80021105a1c39c997. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242562 — a six-check JSON result.
Virbank City (From "Pokemon Black 2 & White 2") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c113f940f3790a59a90291e6049d464288cb5dd9a0daabd69fcb6e51250f4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242567 — a six-check JSON result.
Pallet Town (From "Pokemon Red & Blue") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f2b588acab4521b9cb4be0fe7f86b20aee1ac7c7630f1881bb77c96c04e402. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272439 — a six-check JSON result.
Pokemon Center (From "Pokemon Red & Blue") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911164cb99af457cecdacf91409595815f757ba13b4ea64a5c74f574608e8cc2. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272441 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5565dfe9295ac12fe3ba43d41008bf79e98c81428e7b2d89c37116016c28a37. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242566 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c131a4f812057f5d85e34b3055dcd69b8f4a4e3aeb612a4b24f3e184c2bd4b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242561 — a six-check JSON result.
Azalea Town (From "Pokemon HeartGold & SoulSilver") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d245f288da35a2432afa569fb8f039fa6d053778a771dacc357f16dcd14aa. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272436 — a six-check JSON result.
Professor Rowan's Lab (From "Pokemon Ruby & Sapphire") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b96e69d598d8d96dbf38630bfbfa5fe83de31cd95e51a8f0cfe72469deea3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272445 — a six-check JSON result.
Poke Mart (From "Pokemon Ruby & Sapphire") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f84306c776552b93cf697e881021cddbd583be5c30b96e1cbbc2c14fe05700f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272440 — a six-check JSON result.
Route 101 (From "Pokemon Ruby & Sapphire") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f2d22668ace0f6fce70d0002bf4e0ce34a4e51cf14791ee6a7e1a59669f49. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272443 — a six-check JSON result.
Fortree City (From "Pokemon Ruby & Sapphire") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a86d9d6420fe56760d26dac2515b76e6d106665348c43d7c4ef4fc9f47542f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272438 — a six-check JSON result.
Cave of Origin (From "Pokemon Ruby & Sapphire") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf819296c1db96239ef25735d57854e306fd8bcd365bfdffd873c524e64dd5e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272437 — a six-check JSON result.
Route 209 (From "Pokemon Diamond & Pearl") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2769c9a3f6de9f82bb297a0a7732d977cc469ffed3ab88d7f9cebdb07b75235. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272444 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3250aefd0b37a435c87b94888590b8511a95e5257fcdf80021105a1c39c997. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242562 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c113f940f3790a59a90291e6049d464288cb5dd9a0daabd69fcb6e51250f4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242567 — a six-check JSON result.
Unwavering Emotions (From "Pokemon Black & White") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79a1e866d8dc7abb63edeed21d3dd3ff6186d55502004423cb244ec64df95d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242565 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef8e1ce15cfd417e180a0ab51047425c00c3ce8ccb5570a2c21c68031e5c8c4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBDS2300873 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c22fc60b02b54960c48ba59cc0bb164197704ab3e4ce6ecc84544f1df48d4c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXBDS2362536 — a six-check JSON result.
Pokemon Center (From "Pokemon FireRed & LeafGreen") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e740bafccb41a754260ea4eec202dfaa583899662221098f90a8a23a544647. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32242564 — a six-check JSON result.
Pokemon League Night (From "Pokemon Diamond & Pearl") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b5697897f8f98b25565e7abc22f746f0b5c2d43e53d5817d3b626141d8b28. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32272442 — a six-check JSON result.
Bubblegum K.K (From "Animal Crossing: New Leaf") - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906102cc7b69980d5124adfe98a3f956db7945e59276e0f742decfffdcb1a649. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32306131 — a six-check JSON result.