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 0xae46730392c3f88c79acd1049bd37fde1b1d2a0550e9df898bbd5e36878b6d3c. 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/9f9de199-77d5-4cf9-a4bf-7d9349d0d49d.json and https://artists.proofprofile.net/proofs/artist/9f9de199-77d5-4cf9-a4bf-7d9349d0d49d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff9c6a4bc71901786b3eb011f378af56231e30c0cabe5e00559bd43e5cd92f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:48Z), 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/JPN000900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3713b7b9c4bd32b0570327ac9dca41bc6a2f81e9ab7616b946358ebbea49e5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN000900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427fa373e387ecf94a95d720e98870c2b35d5cac23b6c87d6578112a52ed6d2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:05Z), 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/JPN000900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151d78fd9573b783792522b1a17a9eb7eefc6b300ba5ee4ff2e4d915e3b04b8c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:21Z), 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/JPN001000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31150bda5bb5f416fab5e0a91ba1c725e70db6ea6de8b8e4ff4e7e5a62154a32. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:44Z), 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/JPN001000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c547a436a1285066da02eb2cd79780396daac78bfe19a287a22d26640171b5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPN001000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf19c44fd7ddc2acfad0dd0f47fa826eeafa2c0047047632fe7c31ee470fef35. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPN001000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c4d9c3a37670953c50c30fd2b19148fc1c752ebbe576a9179f733941f5713b. 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/JPN001200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3fbfbdbd4ace10579557d5d61ea9e070e64de26924e7b8672dbdb73b5d90b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPN001200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eda6e14bd38d1947195a3ee7c273b15e2c5fcc08729e0c9af94360dab64e6a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPN001200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2b4107a27591ec1efbd35b7ce5390a641f7e7e14074ee43fb001908955185d. 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/JPN001200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fd87bdb0fd7f3c0c1615bfb64473d0e43b93aff1c51a2d577da4046d358864. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN001200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db7801ba56c05180bd994336b694326238cfd611c4e2a20c28e9a6ee7a358b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPN001200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66913bf2a4f79e59a0157bd9254fc13a813bec425ef7f2080a8f531dc467e318. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:09Z), 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/JPN001300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b08f0d823a48b00478a8800eb8c79e0efcfc8d78532e7710c7e4ef75ce995. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:12Z), 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/JPN001500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ce45e886ad10e43484692b830ad37fb11c27928ef4a036b548ead772ec051. 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/JPN001500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66256c74745d296daa968f2c9199632b77b9e88aa36bddea2305fc25bcc70106. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPN001500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc189f62c6e269d5048285095febba6db27659d0726849ab6d91fa512be99342. 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/JPN001800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67dfa619b523c52a684f0e6630d38076308b22faa876603b4cc3fa9acc1192. 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/JPN001600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168585a8903927343d6ac19049717040e4f76344710b2d44a41fe81dcb30c8c1. 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/JPPO01000680.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276af1e80a2a36f0c6115e68c6f611a627ef7c7e4deaf7034dbdafc0039654b4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPPO01147840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465efe7ec992156177ff01d4d500c99ca1e2dfeee737f050b7f993ca27704457. 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/JPPO01615597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168585a8903927343d6ac19049717040e4f76344710b2d44a41fe81dcb30c8c1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPPO01000680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168585a8903927343d6ac19049717040e4f76344710b2d44a41fe81dcb30c8c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPPO01000680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099337830632565137ab2b1227de01dd0a5234e302cfe8b3b560a654b0695ca4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPPO01072120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d478511ef46055a36859aa50671bed757523e60d1e979b5fa135e7bca90f5. 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/JPPO01092490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d478511ef46055a36859aa50671bed757523e60d1e979b5fa135e7bca90f5. 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/JPPO01092490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276af1e80a2a36f0c6115e68c6f611a627ef7c7e4deaf7034dbdafc0039654b4. 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/JPPO01147840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465efe7ec992156177ff01d4d500c99ca1e2dfeee737f050b7f993ca27704457. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01615597.