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 0xc14b7ed9dff3cf7a6a17bb363589b190a70c3acbc329a4eb2694bd2225d8d224. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b0e27e8-afee-4ebe-ad96-6317c0a6ee76.json and https://artists.proofprofile.net/proofs/artist/7b0e27e8-afee-4ebe-ad96-6317c0a6ee76.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 0x41ae93f49bc50b36b94dbef32af93c7b57ff49fe749caf72f09099866aaaedd9. 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/SEYVD1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39687f286842002154476845698d614d49e6b106fb19d137f3762a30af6f21f1. 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/SEYVD1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400fd994f96441f1dd952676040adb4c8b82d4b4b9078392096876b7cee0119d. 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/SEYVD1000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31093db2967cd83d0d145c6138134bf7bcff08d2dc0545d1de0cc79e821624a. 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/SEYVD1000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876de23bc4869c54887f49dda45e498aed49c88fdb4aa841f76e8a0aaa023cfa. 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/SEYVD1000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7d629c4ad365fa099fb83c6904e6bc4b67eacaf9e1bbc43b202b8eaf5c4326. 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/SEYVD1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874a29bddf384c31ab03a98b18c9124d53f292491968a1994e837615a5da4ef7. 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/SEYVD1000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9634f9229c369a98b2ac33a68fc3b2ea8b81e4123d3a28d5ab92f26eedb7bb52. 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/SEYVD1000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0176a9f16964c9016cc068404c69a25950a90ef313252edb606a75ab44abadb1. 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/SEYVD1000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d9095d2bf75a6388bea1103cfddb9889010972600eb4e916d9fc60f893a3b6. 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/SEUM71201244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e58b58a5a8f8032319b8dc5467e89a43ed7b8fe8e7c444e2be026f9aed9d18f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEUM71201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e58b58a5a8f8032319b8dc5467e89a43ed7b8fe8e7c444e2be026f9aed9d18f. 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/SEUM71201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa253e361f19d1f8a3c19bda2fae8d5e76262b67a326b73512aa548dd519474. 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/SEUM71201647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86546ce5fde0f657346495588039d9749d78e07a5c6c2188f57eb01baaafebce. 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/SEUM71201651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b29d6710ececca0dde8ba9af2149d32cbd6dc383b656ac1156f9a3f8cc26c1. 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/SEUM71201654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f2b9449438505d6d6ede5159ade8d6a90269a76c38ec23e79923778ffd7a99. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEUM71402119.
Welcome 2 San Francisco (feat. San Quinn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e03bb0194b0fc0bdb4fce2a7cbc0c322add2129727fcc38e050b1b2244f1d2. 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/SEUM71402181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5428afb1f52190a893f80597929180fc659927a6dec325fa5df0290599a2b5e9. 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/SEUM71400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e85141efe7cefcf6e8f54d65402190f75a0cc493c4158334ce5b43184a7e73. 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/TCAFH2032873.