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 0x893457ac0a13bf6319c8ee40b0d6d5f4ccc05b56253624a8cf99691e57e281fe. 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/bbf64c63-5582-4922-8210-abcb767b51f8.json and https://artists.proofprofile.net/proofs/artist/bbf64c63-5582-4922-8210-abcb767b51f8.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 0x2df95b7068ba9b12cc178130469d95f76c8d582de4956c9e57c3453b7d23cc9a. 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/QZHN92455685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e6c5aa102c1df856860213355e3fab3155cc3b6bd9b3934c3805bf7474ace2. 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/QZTAW2483903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b9735a4f140552212a4fa6ca923e7c455dfc1dec1204763232eebe049b8e4. 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/QZTAW2483909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2165c62dbea3f750c5e2dc0b6e4a4b4e401c1598dceb1ec166e7f2b1202299. 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/QZNWQ2562586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca4b25a275ea86cc13a4d3b1e5e8b62a30c54b8c757765f3958842b3cb15ab7. 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/QZHNB2592859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a462b1336ca75d230e531b442c01d4809a348db5fb101e6173be83fe8ac1e3. 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/QZHNB2596956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5052dd56409f798584f2ad1399e4542496f5f53b5e0c0ce168e741aa46b239. 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/QZES62508465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d138370666a9032b0f141e40101d0b4a0611accf6168656bbe5998edd2558. 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/QZFYY2563082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4213cf2081d8f541737f3a471c4dbceaea935531c6896f8281f3862ecd34b052. 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/AUQ9D2400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f8375275c442f993afdc8565ac537bf06033ec7ee3a5fb9450a1b5acb6bfe7. 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/AUGBT2486372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c57f8030e22045f4b42b3e783002c63afece53b4864606a2443ca2ecfb07ba. 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/AUGBT2469418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0470ece71c7196a87a30fbb10bc40741969ad7796d86f7f0eed47e7c0e94c271. 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/QZNWS2483773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09020ca9c2c82808041bd2a9e17f71a8f69238af36a06a0c181039b620202d3. 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/QZK6H2428238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dd066384ef0e29a0655a88625d57912193d111891b1cae529f188ec9a35227. 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/QZES62497112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44869f54d5cf2af86f909ca034f7987c55718a3a9ac53a5c49c9b299cc86b26. 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/QZWFH2343734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14abc1f9fcb6c80968afea43827145d78948624ac57c2b4f8e7f360d29966ca7. 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/QZWFF2379161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d221395c29a7d432b5bc17f90e5c31d9177cf61eca93d4ff78702e32caef5. 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/QZTB92358916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375cec83961e7a9f301aaebe26801af5e0bcc8d3dc070ad0bf0d88776691de33. 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/QZVEM2362348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776338bfc66a47c8fb325518a255e6db8da931e1b39a3601aaa4406aad161d0e. 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/QZVEM2354104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64da1b4290ddf055fa3d228a3c29bf338793a1fd4b8c7a612d9754dffe1fc0b. 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/QZTAS2321526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe377b7b648f64d118e3e06e6c9d49323ab7b7dd3cebd06025c7553951f00b5bb. 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/QZK6M2357303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e849f7bbdf4543355ae2cd01a32c333aac9aa3202fa1e93f13bb3583d28b71. 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/QZHN32365384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8af90f23f3fe7b50227e016729932642449f69f06e2620c35fe14c46e06f480. 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/QZFYX2346100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa711113a2a6b517ada8dfc9e1a1c84d47f7c29995c75d5bae86149f895be68d5. 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/QZTB22250040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344c5ebc88b6ca5c61cd8445c7caa5d9a79cb1de4478d038df8f0d55ba72027e. 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/QZTAY2223804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f672268d73362f03cb28a166c2d6b7f802475ab483ca989a1614a957e14f7b. 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/QZTAZ2232347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf725da295ecf08664b08448e2fefcaac32e83ea1f2f7234ca2301c14a3763461. 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/QZNWW2242950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f1c403790772e6e7dcc82f534416bb39c27f2eef45e54d6245c8e3bea0d53. 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/QZTAW2294052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc0a7ba0b73cc357dd49a7d74622ccd8718ffa5499d8ec0aef2b4ecb3f035c7. 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/QZNWV2207913.