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 0xcd7447e887018f4f95a885ee9ed6674da20501ad1917aa4be1e20647dc635640. 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/1480e0b5-02f2-4e22-8371-2f1b583e4c58.json and https://artists.proofprofile.net/proofs/artist/1480e0b5-02f2-4e22-8371-2f1b583e4c58.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 0xf765e59ed6c632b06520b07f10e5955da1b1d991e9ed3aa1d5e3e8c75afa5c6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE4RG1916101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd199dc09630b8dfba71e8c3acfbfa377739e49b84128a22d266e21b46a0a2904. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE4RG1922301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8cc1522694393c3efee24c055b48da32be7221653ae2f7d4c37bcc81d5ef45. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE4RG1922302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfd32b180a7f3a7bde63bdda23e75215c6cb0e2b2312aa89d8c3131d641741e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE4RG1943801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20db972223b98dd96af808fc32f39feeff195ae4621aff3fe63876a9dd952a02. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE4RG2015202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857605029831a38f13e7f6f9c82328d8346737c891e69f98063551fae0da7474. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/SE4RG2094601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e04415280af9b87f3eaafe79f946c5a5c56ad6ec97aff84d5272c5046587cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE4RG2302314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931919cb4da91ce73543a5e5a3fc5ae964f1ba9b8a38ab058ef3af7479760c77. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE4RG2302315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061355e18e71fe5b48a881ff5116055c808e88dd691ae6f7fca2ffb5854e33bb. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/SE4RG2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b014088f8aee8de69f3a9bae75e78aa6a529f54789da0c71a0ee618e8223c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SE4RG2402061.
Tranquil Evening Vibes: Soft Sounds for Relaxation