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 0x3a211a2b1ced082175f0f7d11fced7718c6b41786e7623a102bbb3ba1cd96e0a. 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/fda17bd5-079d-4bf4-a0a4-4eed89960152.json and https://artists.proofprofile.net/proofs/artist/fda17bd5-079d-4bf4-a0a4-4eed89960152.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 0x48e3b926f06f529c6a16b258f9623252644d807530d0f30837220a68c44fe560. 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/JPP302400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6800a6d139a5a1adc5bf9280f7c824cd6344eb9e44cefb7fe4075ae07716a. 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/JPTF02433901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e0990be296b2a811ddcf12ea16be6354396e56214e2f48d0a280b3f414e63. 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/JPTF02433902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ca4bfcc224b84124f1fa2f00567c0e1532ca972dcf78318a8f3af215c383bc. 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/JPTF02433903.
愛の言霊(ことだま)～Spiritual Message～（feat. Night Tempo）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f0735fabe9057a02554d2d3bfff453b252ce0cebb8e7c1c057276807cc652c. 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/JPTF02433904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ef0fcb0d8c42a996007c4d7ba366fdd828e0815718efa78c93793a2c59b90. 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/JPTF02433905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709566bf0c33b378fcbfa0fd02c7a879430e8bf4ece3d4c08ffee6465e70713f. 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/JPTF02433906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337cdefc86e41c8f11ecb2400f67a3423640b175ca356ae89ea1ea20584e7011. 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/JPTF02433907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42302576784959914e13969b3b7b1f79a7296db59d8b97bb7ed369f48b9eb26b. 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/JPTF02433908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175166342dac67486a7b66ad829d013eec81a3736be7077ec2209733be147d3a. 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/JPTF02433909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7877328d1812b46db0a9e888209d08cdf85c6c515173f55ffb07e47420811e72. 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/JPTF02433910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaecc82d79870d76cfa1269611df02e0124186eb2030ed379d7b082585d33289. 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/JPTF02433911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92fd12cfe66378613fc2ffbd8f967596e3d5f250e8ed451e59f581d9b927509. 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/TCJPF2567581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679c92af3f73212dee13ef6357443bc20469ce150cd906fb492168a9f4fb2c90. 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/TCJPE2588076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e6140820ec306812bb2538a1d01f0150a3b6c196c2f5943835cf4c6a212d9. 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/TCJPE2548844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaba164fdb1b94ca0c7a89311e29b06e04aa8c4afb316a3482af74a6074f5411. 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/TCJPE2502118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73fdbc75aa4e6c88618c86965204afb77a54a9753e0a8c47f2cdcae047dfbc. 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/TCJPD2564745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964fccf568448389ee3d94b0e6172c0dd06635330f90d1a051db38c94a7250d1. 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/TCJPD2565222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9728aea2113ca897592aaa42b22649e4dbbbbfd63c4277f098450acaf1e7a72. 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/TCJPD2565228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2365b5ad6d98206de1c04f552877d3ff96479cad11d66470b2fe8b6caa660a6e. 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/TCJPD2535794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c39f8422d0951233b614fd83f6add5a7ea5412233804d744c48284892502607. 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/TCJPC2450103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adc79a99fc409eae04f487ba20ddef3fcb5290b6b6733aff36256575e1ebfce. 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/TCJPC2429407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab9cc7fbd831c39384e3f70f245c158cfa9f448a360e593d208973acfc27a0. 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/TCJPB2472916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde89f3faee992d56232985aeced1c0d54cd32b5b015bfe85b78f5bfc760d5a9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCJPA2489663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85145723daf733a5515fd1bf837094b195ba9588cae3e02c1f6216be0fe54f59. 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/TCJPA2404165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264eefaecee64755c9ac50ecf638edc82cfaf1f8edf482c46e57dd0542c38fa. 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/TCJPZ2456938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba9849dbfa0de03298e6a5ab2b337caff159b81ed7773ece5ecfd9ae0ab852. 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/TCJPZ2421651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14678cc4e74918bc3d6fe76cae16dc02be795ace05840cf05de3b7559a80de5c. 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/TCJPY2368711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e4c97546e892b545b1a9f5f1dbc37f3444935e4910a595a18b6331bf1300e8. 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/TCJPY2317244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb60839761efa531b3282df7182386879c1dbc79afaf883bb68cd43a5953522. 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/TCJPX2377152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741cb17b9abfab604d47a1d877f9dd3539ac03496e65dfc2d0638e6a5cb9f05d. 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/TCJPX2336345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136f53fbabcf455d3cdaf02ba562fde25cbb0e2d2a7e52141a81b9f383cec9c. 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/TCJPX2311110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dfd25372167ae549c8f967423f0b5b4300ab954fb095a97fc84a5d4d34c97c. 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/JPB602303095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493db7776202cbd139f0ea3abf58f4049807520c186b1b6f2fbf511bb2f8cbc8. 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/TCJPW2361844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e62887bdb866464f2798eb8831619d39ce6d9261456c5976237321575e6bb6. 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/TCJPW2329994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b410eeeb842b7468602a9115e1b659ab268d27b25760065b44b240cb0371e0d. 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/TCJPV2374328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f24a1e0b8174353a99fb778d53fa86819dbfec8b48fc01beb8ac5977c42a9a. 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/TCJPV2374621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afe81facb5eb665008b39c8a8bfdcdab19541d7c27312848e8f13f9f4cad828. 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/TCJPV2374596.
cOncrete & wHiskey Act II Part 1: A Bourbon 30 Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6582c9b02d0529d0dace061816a174e05666f305ba6d49dd378630ebf57458c. 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/QZTLA2413658.