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 0x9a0038905d96d600ce53eb5215277320e34ffe4252f1173373ba023e922f541e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e0638e9-f743-464a-b4b0-c9e002bed444.json and https://artists.proofprofile.net/proofs/artist/3e0638e9-f743-464a-b4b0-c9e002bed444.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 0xa78aad0dfc926038ccf5bb9cf4796cdb87045d3894a598815a85b3f9b43391c9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES01100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdc11505f75109b94c231eea2cc76243b6615cfd1cb2655b37df83e579a8a5d. 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/JPES01100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2559d8003051d72dda45d2dd8dadddb0968abdb56bc2383917bbbb584df6c2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES01100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8030c87779b87a4d90d1490f7e09fa923b66d78ddbdbe2aa8774881922b2aa5b. 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/JPES01100365.
朝7:30ちょうどにすれ違ったマドンナに恋をした
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ee35c6bbac5d0a4bcdcaef23e97eebe35100fe6f7e55767e6e0153540b9e63. 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/JPES01100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c628cb6a9cb470216f127dfcf3bba6232b4acb060a9d32c3068272044b0242. 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/JPES01102261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cde0e7d1d88363552b558275cd3a7f3d51f5ba91937d38a8e609652ced92b0e. 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/JPES01003206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a74db6835be24c4a54db4d5a07a541f49caa13a1144d152ba32a3588dcc8aa. 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/JPES01003203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7455bdedaa658a6a112d9475f3331a059aff2d0a934c526d26619acd856e7c7a. 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/JPES01201601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3320dd5d9af686a9c2c593f3cde3c195e63d0bd255c5a4482defa4f5d479d14c. 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/JPES01201941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43573d339d6d24313dd1bb18eeed70c38fae283850cc8817c6b8ab3ff1496efe. 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/JPES01201942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a8fe770ac2b9b39e452e554d562d9056268b95e476eb5ec461fb95837005ad. 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/JPES01201943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587072bdea5b73ab73f155e7e7ac53e78a64445b65e98d78237da6e85a675c8c. 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/JPES01201944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2559d8003051d72dda45d2dd8dadddb0968abdb56bc2383917bbbb584df6c2. 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/JPES01100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf330badc6ae2eb49b82a436340386fbef05a5bbe81395eb2bb7ceff0ebaf9eb8. 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/JPES01003202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180a319e9b485f57a894017e1c42684fe353a2b3c7e6926b093e13b8ae1e465. 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/JPES01201945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbcefe5b0dbd3d643973c7f4ad16baf7c1af5c1c10f613847f088a5869c5b2a. 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/JPES01201946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8030c87779b87a4d90d1490f7e09fa923b66d78ddbdbe2aa8774881922b2aa5b. 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/JPES01100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6083db4e2afaae6018bd298a1db9721ac4633ec40cc86c6473d7be313ef5fe59. 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/JPES01201947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ada1c3c6fe7ff0ec5a8749b2bc1c212b92f936c67df9b00491d514d156b3eef. 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/JPU901602509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291d5525085f182ed20b018324f71d9ee3f049dc390d50f396306b2c47bc9a1f. 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/JPU901503963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7455bdedaa658a6a112d9475f3331a059aff2d0a934c526d26619acd856e7c7a. 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/JPES01201601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c628cb6a9cb470216f127dfcf3bba6232b4acb060a9d32c3068272044b0242. 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/JPES01102261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ee35c6bbac5d0a4bcdcaef23e97eebe35100fe6f7e55767e6e0153540b9e63. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES01100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a22aba114eb989fbbcb16f9e7be2fe7eb665ddf93bb744653a5862964fe8b1. 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/JPU901501093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43573d339d6d24313dd1bb18eeed70c38fae283850cc8817c6b8ab3ff1496efe. 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/JPES01201942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35aaa7b6168f21190f87f1300fae52b78fc8b6ca97bb2b1a79eb6c68d3582df. 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/JPES01102361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876c779c2be6a9cea3dafb4c3868bb9c0ce128c14c7c4e27c78abe896f8fb4a. 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/JPU901602813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb38b8aabd4e5762717fad183c17d065c1f483b5e3362eccd268109466cedb. 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/JPU901502872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2559d8003051d72dda45d2dd8dadddb0968abdb56bc2383917bbbb584df6c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPES01100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a8fe770ac2b9b39e452e554d562d9056268b95e476eb5ec461fb95837005ad. 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/JPES01201943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8030c87779b87a4d90d1490f7e09fa923b66d78ddbdbe2aa8774881922b2aa5b. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/JPES01100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb912c69dafa128dd944ad0483441356861d5c513f9c3f84a8d8a2b5bbc78a09. 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/JPU901501771.