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 0x70145132bc71ae0434de912d8ad5ee2823c03fdf7cf55ffc448b962a310912ce. 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/9e90560a-ab1a-4dec-9193-d6a37719755d.json and https://artists.proofprofile.net/proofs/artist/9e90560a-ab1a-4dec-9193-d6a37719755d.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 0x90a6d60534a52f327d505c2146dc81f68de0af08d2a029e71e6d813af30244f5. 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/SE6TI2069620.
Batallas del Ragnarock Shuumatsu no Valkyrie
Jack el Destripador Shuumatsu no Valkyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a24e7df0bb2b45c524cb6bf853e2a1b12a8ef24da5bcdb5e960e9499c9dd0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE6TI2056715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9895933f66ed2a5d3a6c15ab7471385524a65163bca92ca3ee3397ff72cc23cc. 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/SE5752140850.
Nos volveremos a encontrar Despedidas en Animes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0231de25a7c61646e44343aaaf1d313a5acec1871431f931632f94fe6e56c32. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5752140880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aefb309fd85329b07b88f2aa8c8e3249a3d8c9eb43e26a74ee016c39372f71b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE6A92120427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769e3147654d1e3bd00256627d7ee27a1e291eafa5c1a5c4132682ae87c982b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32116996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b8e3a16fa6d94c0fe5f24cb35f5a6de80ae3301805acc4255eddd7c933dc26. 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/SE6SA2126585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da5304558099c582943ba19bf4be58a3a831c5270d9709be93d33b43ef43751. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/SE6TI2135158.
Batallas del Ragnarok 2 Shuumatsu no Valkyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b188ddaea4d0d1cced4a4cb8b0b9dc9a71a9b94367c4d5d64bbd28fa33f3067. 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/SE62M2125398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29caf2220f8dbd0c4ba6194e8de2c6dcb01ec80ce36dbe6885ee8a7a34f983f. 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/SE5BU2206317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc20b89d9df9b6bcf1b1ec3782f3c653c61bd458700eb37fe536e8ba4e993027. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5752249016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58a5cdeeaf214e7336e7b07a49956e995a2f28323b82be82d0972fb9eab11a3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/SE6HN2223608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bab80def3c07054fa0ed827b9fe695ab6cf893eb06ed2818ec813fe306f6d0. 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/SE6SA2210542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dbe088f791415f466c9dcca937880eef40d270ff9c3724245144baac8f73ea. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/SE6I32316281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad7252d3df75e450909ee280644abe45d5eef9976ce212d97c7796df4fcf35. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/SE6SA2326406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188d55fb1e1fc00f0876a7885de5879c9897ddb046608d9be24524e8cd4745df. 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/SE6QE2421019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf79bd5a4b257f591282c520ce4fcf65b1e0cb19e55e86f00637ddf612af1d29. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/SE5752480880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8f02571e4aaf4200912db33a9f9ec67140f9015b8339ba84031dd717a7210. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/SE6HN2415345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989b7546375c373ecf6517bd129f72d33bf6ade76b8eff788365142663769c23. 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/SE6HN2481926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde8a4b1de6fa0b4ff49a26eb9f21c5861c2aa0cd23ab611af385c35b41b913e. 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/SE6QE2434376.
El Monarca de las Sombras (Sung Jin Woo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0068934856d7df4d66d94efa587f4c7b631ee9af7eff0691afecde41f4493a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SE6QE2489222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fab63348c63e18ffb1e4d06fc0dece0acc41f870864b0ef56dda541894a5f1. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2474433.
El Silencio de mi Culpa (James Sunderland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf168b2117f24a4ad11a35f2b7fe8224b400e97f34d7401843ac4cc44b4c17815. 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/SE6XW2422577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e52f6d87167d0bd44d914b7010f4db6836b46473ac0d35c16c4eeb296b52513. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5BU2540948.
Un Mundo Perfecto (Madara, Aizen y Geto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b3214ee5ff53bd3ec2806819b305a0fb2013a7361c74cab19879009849f27f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2500688.
Despedidas en Animes 3 (Si es por ti, no voy a dudar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a9f84e80a12acff91f5519b22d7cca4277391b7ab64b97b7ee9d37722e3830. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/SE6SA2546026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54c6afcea6c4f3b2dc167b7ca6a8a988ba0c12163fbbf6d6f5aa98c48fdede. 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/SE6I32567767.