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 0x1054d8741e3f4de53d609404bb81137d54df59cf959e2127bad432a537feeca4. 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/3756076b-609a-4043-8e9e-ffb44468d06c.json and https://artists.proofprofile.net/proofs/artist/3756076b-609a-4043-8e9e-ffb44468d06c.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 0xb1a02265337ad04d92ad5ce4d265e25073d4b1a8e65589d267d05a1e050e40c0. 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/CH6542086825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b339c74c45c8e65c48b7566904b4454f9a52689481836b8affc49250694fb3. 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/CH6542033935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305abc066bd86ec81cdca902f65fe32f22e54d5b6f9f04e53bfda4866409de07. 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/CH6542033934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c49e29c815f215be07cf758b8754d06e28574801a04ef22aa26e34daae8fc74. 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/CH6542033933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676fbfe98424c61fdd6f831ea9c9961f66d1b73980ec1689f6b9c531d12a3f1a. 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/CH6542033932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2acd33a194358adf994b140f0839c793732b43a56e50545b7bb49e95bd8506. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6542033931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd3ffd8d9fc80ec8251c80ac3dbcef560a15f3755135b6049e090c5f247cc2. 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/CH6542033929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90152e7769cb242cc6285fd7a60ab9566074709642989eef4de35504322cc963. 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/CH6542033927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d6b3400623491359c7e5e07635d8e1af73dd35240ba3a1267c6ba22b8246aa. 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/CH6542033922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10245981eb44ce8f8b762a171c57701c460819e74b185213ee7aaeb6f6b3e810. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6542033921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea2db531c2427c5c81c9ff19f252e0d9b01ce31c164bb80540e628f0670f7d. 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/CH6542033920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a515a1881d2dd77cd677710d83a502c60fae66dee55e6ceca82ee588460e3d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542033918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374e68aeda789baff0dd605968a37abd218a85ef87f6d6628843ce0af550a49. 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/CH6542033916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf674a165cb84c37940c30773236c1b60c5e24825d89b344197685514bc66b55. 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/CH6542033913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab761f0f5922710cd024e4b6d5b16cc9d7da82eaab2a8d42e64dd050a4f42179. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542033912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1637d79695652ef476c8a82d8bf49a1957fd2f1ca815796a3cec6f613a57c5e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542033910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc572d59d0a0ae0d6d7b1979dbc6b4e67efc8db05cc9d127a06213fa483d068. 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/CH6542008254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e8383616fdbcc5241e0c0cb8cb30dfa745a142b2b4d8fc88baf4470e984e4. 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/CH6541972507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79bbc24ce12de7fa90f042f44a891814794ded7f058e07cf2afdff10009b1fb. 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/CH6541972510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc103402fd280ae87c999998d8a0639b3a2c28a810903d741f57b795c329039b7. 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/CH6541972512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94abc6b5c362d08464f54e8b11ac0539860fd8d85dd86b4317ebc1ada2d551d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72549be647701c2bb98dcf3f310e7b4ca85c3d346cf45e209e930e6b8d4a5e77. 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/CH6541972515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891b9a37cd322eae3181a46df87265febf9cd32ea16e5c4717396bd71cedb814. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6541972509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dcc1c0ddbafe60b63f45791e07957942bbd41eb914c107b02e657b709dedea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c4d99e19507a31cc03cc14a291b821e38e016f1154bd90615b821c6ecdc983. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5407f4cce41f898f92b61fe92cfd9f10033594044b9df5bfd38b2ed2891733. 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/CH6541972517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cffc93a876492338df482870d7ae6569a5207e565f1ad1bc0302c6ca3ca2813. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6541972519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88850ed69b2b9082a8e07683ec2c5ae10ef50ba98081697195fa34871f51ac8e. 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/CH6541972520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe84c3ba86a04944b600604983843c63a4253b398c3ba4d23dfcd49d82fea0fe. 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/CH6541972516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e32d203ba957945462d331997db6735b6711590132851ced9d37dda3e96c5c. 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/CH6541972513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ae072c9bc041cb9d1f6dd35dbe7cae944d1c8dc0623560bfecc04ce34accb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6efa97f338240546171fb01317583c6777216c4de8d6656ce8bf7fd455833. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef4a5ec4dba48013b6ce5a41d202a455c42afb321280a6914001a0f4a1b7c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6541972522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf691d0243d260f969b689adb6b6bde6e9eff21221fcb708392a3a5bcc8a00ed8. 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/CH6541972523.