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 0xfabd85ed42992d2520ea30606e558fb09184a8e49041971bbe06d4c75e85e7a1. 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/04855c3c-ca18-4af7-8e31-00e1b19ebea5.json and https://artists.proofprofile.net/proofs/artist/04855c3c-ca18-4af7-8e31-00e1b19ebea5.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 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 0x967ae99d166673d683cd8a1d36541c950d9e8cdf49ad3c4aed85321a6dec7258. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2225662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9eabb0e8a2cedb1f59d695efc9bd6789fe51464568c416194b96eda0a08cac. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWW2264990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10c051b7d6b37ced255862af3daba3a56232fe586ab0823db141e9d74a2926. 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/QZWFF2347716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7749ef3701098adf7adf58cdc11be43f6d8dd3007b9dd1c9a4ead19a91d5450d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEP2452812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf519ccce6c76aa95ad889e45e6715091484d804584448aa896bc88c5f8d667c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZYHM2423597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116b93d66a3e9ddeeb160cb428f323e205244ecd347d10181800677d8ea6f8a. 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/QZYHM2501910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e494646409692b52ecbd7f8ba417d190ef71a4a477838885d2ef7cf89567c4. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZYHM2505274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91663af8ccf47499be1b4beb4b9add11ba69e61e1bccd7ad0a46f1d42f090ec7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZYHM2509582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226c13122bd7fb645c03a9609eb4814042dfc9e13aecc724cd42f7e3fa0041a4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYHM2509818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b18ff15b2f982918af15d74ab71fa632b33923267a1b79609f05cbf6408663. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZYHM2408251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd692388363b33db9b472e37d44a6cae13c9217bc7b7faafa6fba4696938412. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZYHM2330515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3915983b4e9c018870fedfc13ca448ff794982f3894b4b9a8dacd2370fc7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWBE2253034.
Tanjiro, Tokito, Mitsuri e Genya VS. Gyokko e Hantengu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b40f640bda578d36c70152efefa81da7a88e17c3af976067cc4d6229a930a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWBE2404920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a4a9343ded2b1049429cbba7ea7827a3c2f0acfcbf9a13eeac5826d2d53e1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBF2311659.
Sukuna vs. Feiticeiros: Ciclo Amaldiçoado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c7e2ee91538f072746028a511503f89ec04530fae8282167c12f2fab03062. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYHM2426256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaad33d390f8014fdffc18f96b5f44dcfce232bad999876589b490067185d33. 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/QZGLM2328091.
Caçadores de Demônios (O Futuro é Pika) - Demon Hunters (Future is Pika)
Caçadores de Demônios (O Futuro é Pika) [Demon Hunters (Future is Pika)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d73cacf783ca260b83785ef58f61b7b1177a298a170466e367b3f314e7ffb. 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/QZWBE2276735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f86614fd7c5268581fcc160f50a0c8a5c0dcee2e5789e14389c4c67da6ca1. 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/BKWAR2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f662c5fe29873093a0383563f35c85c7c2492df100380d5445d237b507477. 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/QZYHM2422845.