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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9040405c66bdbe6192f8c076b02eda4b747eef99096757d3b7912822f33a30de. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32804738-f8be-4ef0-93ae-165b541f0b3c.json and https://artists.proofprofile.net/proofs/artist/32804738-f8be-4ef0-93ae-165b541f0b3c.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc1e6637d1c89498f34012b4cf7679024f39824965fb280ab14fced445183af. 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/CA5KR2047736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944d733853532fe156d78a9890d6dbf5ee9b5eda01e9cb711d176cac067b381. 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/CA5KR2047737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0f1d5a2fd367b66af4ac20c9e985b681f133808c7f70b6d4eeeb59758cdbf. 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/CA5KR1833759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99a48ec6b0e9cbafa1486917302499fedc3f7f1f822464e70f0ce643cb4396. 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/CA5KR1833760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890060879d63505bea3211481eba1e4d015dc983190fa1871bf7bed5aa95288b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR1845624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a481900b3df29e6dc4eef5a2cd2453e187b11b2a4dfa58e50d4d4b0c4bbb98c. 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/CA5KR1845625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4699d4ada725380f0af6c5e82e4bea1fb548d0d5b7169bed3e270e5e4dadd1. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CA5KR1845626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce2b52098d2e34bd8bf34960b7ac8f57a13a3b22e8d6107e898aeef10cb439. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CA5KR2259753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a1ef34021842def5524b98ce33ace5a261ca187c345c38f7f20edf27186d55. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/CA5KR2259754.
The Girl You Lost to Cocaine - Sander Van Doorn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31873062bfa62c474960e15f49de069ab6c9091afd8e062d8b410ccff13950c. 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/DEW871707759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16f98752150191aeeb8118c340591b04fa73e6b5a5e7c02b29915d4b78ace04. 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/CA5KR1844210.
Last Night A DJ Saved My Life - Cedric Gervais & Second Sun Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0f7e5a5072918be15026d2410df18c4029d04f2653043f59cd02e3417be6b5. 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/GBJRX0500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3106ae8971603e004f1730dbbd0e45d779d7fa5dfd907cee722e2138621ec1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEKB71981872.
FSTVL Madness, Vol. 16 - Pure Festival Sounds
Destination Miami - The Miami Club Sound 2k18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba2d158a2e82212c0156f06b1089c65cae91ce70b8df323eada24605ba98462. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEW871711256.
Smooved - Deep House Collection, Vol. 33
Festival Soundtrack - Best of Big Room & Electro, Vol. 13
Timing Is Everything: Live at the SideBar, March 10, 2020
Ouroboros: Live at Snug Harbor, March 12, 2023