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 0xc0f65f7150e10bc2817257dc699bc98faa6abc8d62cb0aac98afe577814f27ca. 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/4f508045-2d6b-44dd-ad44-0c5ac67d47a5.json and https://artists.proofprofile.net/proofs/artist/4f508045-2d6b-44dd-ad44-0c5ac67d47a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intro - Eurovision Signet / Prelude aus TD EUM
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 0xb630f148d8e009cdcc76879c8e4571369708a835ae9d6a42c31d829f3c74b2a4. 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/CH0010600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f34c0842b4f332f99233fa3d20fc86ebeadb35d1c2e71c8ea8950ced7b3667. 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/CH0010600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896b3a0e04344fc109c23433855a951cba648d4f22b64adc50a8183195e6eae8. 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/CH0010200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7480eb38107032c275646b21cd90fb79d2444dcf290a28f29707702f1cfd4bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH0010200035.
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 0x3e1ffb7aebdb0ca6f53c9436f15ef5ee3c81aa02c5d9a3b439fa1dab51c394cc. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH0010200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856916f7e41767c87e23321da11a38f06c969865a0e68de94b11863a52ecb17c. 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/ZAE081902760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e573f97c3582836db718343d0a8782fa32c940050fd6a09eafe7d4bb89055. 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/GBJAJ1700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb35423fc83c531a90386370d4951b5829843880f344ffd38c03cb4d224b7aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBJAJ1700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa202a3a9a1097fb8638a9cc3f757945d36b28359f6facff40c83ec5b8bfdf1f9. 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/GBPQS1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea522073503a8056f8feaad0dae801b1b2af3d2858c839af81570839c821de3. 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/GBPQS1200014.
Style Is the Answer - Dominic Martin Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118eb69276b350f259dc67cf84a730e47cf6eecf67dcba23cc1d82b398ea5f7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBPQS1200015.
Style Is the Answer - A Deeper Groove Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c75969a9b2018d4dd2c778c2884266cc4e8fdb288ec5649907127826a5581d1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBPQS1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b0036a955a9d123eaff255c173eb558d7723b5aa8b3b16280afcf6eea95d2. 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/USFHW0600049.
Burnt Deep - A Deep House Mix Series, Vol. 3 (Compiled & Mixed by Lucatwana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa202a3a9a1097fb8638a9cc3f757945d36b28359f6facff40c83ec5b8bfdf1f9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBPQS1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3643270d9caf8a685b4b40953669fb4fba50587dde3f3fe5c19354239f64edeb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR59R2184531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f20b6f36fe7adaf77872f3c0082ead924f36a4f0971071ccbde48fb2a8e0057. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEZY62100098.