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 0xd0ac8f9d1f37c83dbbf649498926270c71d3230de0ce89f76260855c5bf962f6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7199c92-1380-4842-93c1-a97390a79a49.json and https://artists.proofprofile.net/proofs/artist/e7199c92-1380-4842-93c1-a97390a79a49.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 0xec26e672192ce2aaa344812b25bbc7271dafeb315463b85ff8f80f40892cb4d7. 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/ARF411900351.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94388001e4e7027c79257818c676aeca21804cc257fa0cbb284dc1351870a3. 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/ARF411401221.
Vintage Café Vol. 3 - Lounge & Jazz Blends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Eyes Without A Face - Ronan Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35f404eadf560d5f45762b806597310db34ce2a3fda3bc0b3ddf88e2c6ea02. 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/ARF412400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a6a8387ca11a95e5d61ba6a3138f465fe9a8a25f44ce27368d5f48946cb4cb. 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/ARF412100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94388001e4e7027c79257818c676aeca21804cc257fa0cbb284dc1351870a3. 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/ARF411401221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f96b9d7dfb60c943ae136dd04b61db29dd4e71f0683a64dc716a1a6f06aacd. 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/ARF412300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5dc24ce1d91a9e9a520f1d7084bbf3974035e9d72c9cf59ff65b892ba5430f. 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/ARF412300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667eaa55b56ae9ccf5044efc3d45c1f6ef595c6df5306037d3a6dd29b03629ee. 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/ARF411001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Concrete Jungle - Krister & Dalbani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7918c9061f6de8c41d32e64e40ca3c9e40dc9093472e06161f130633d737777a. 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/ARF412200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667eaa55b56ae9ccf5044efc3d45c1f6ef595c6df5306037d3a6dd29b03629ee. 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/ARF411001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a2b6edd1e10ddcc84b62bff7cdecf6932be45a56c8c2ee9d6b8f7fd58a69be. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARF411800577.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Vintage Café - Lounge & Jazz Blends (Special Selection), Vol. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec96246d1d997722980b592ff6342103477541536fe38913053670784ae1e43c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARF412000278.