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 0x534082eeb8bdef5dfe54ec319fde62649957f5fc6ac89cd54b95ddc4c39ee96a. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ecc7a30-7ca1-4a6a-8b45-7c4059dda43b.json and https://artists.proofprofile.net/proofs/artist/1ecc7a30-7ca1-4a6a-8b45-7c4059dda43b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Isgqebhezana (feat. Professor & DJ Temlaz)
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 0x8760c465ae87e6f68332ffc362639d0322c90c80db839d831201c436ccdd054c. 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/ZA2BO1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eca1c5dff1cc8064ad39b3caff108ceac69425422ac24bf040cd0024d8ff11. 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/ZAY362200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef715c3a7003a604924e96ccb0511e0ff56296cbd3a6652ae251f4fea66485c. 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/ZAY362200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86432f53e53017e9dc0bdbedc1ec39b446d81ad5e3a77402835a2b52605e9ba4. 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/ZAY362200822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dd7d6587f5936161b7f15bffc2c3a4f4cf4455efe380a635d9553a1ca38b2. 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/ZAY362200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17727229f279db06f547db05b24b19bd19eb008552386e937ba56a33a3ffbe. 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/ZAY362200826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e015c027a85f96e1a61a707127b891701f136f813836486d6a1a542e14ac3d. 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/ZAY362200827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d01f5e7a7931690d6bd53aaf4648595c4af322a730ac544888eb23ea08d8b8. 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/ZAY362200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34df5b938005577bf3105332a22787b92bbe9a444ee904e31a76202a0e18189. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/ZAY362200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c01297575262f93b719dc96d28632318ecf776d199ed01218432a6783d889. 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/ZAY362200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7f04fa21b5257ba9f0e14801f89c0fcd6aeb379036c23cd71d31909dea712. 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/ZAY362200831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f35bdb64e0f7c6733c80c3f8ffc60efdc084b0ef141560b508f8a26be2c3650. 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/ZAY362200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30811043da1c6c6d4543015e9edc148a60b1eaaacbdc3239d8068f566af84370. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZAY362200833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0a5f925546fce6c9b1f3c07a42a99037ae53526acba14d1ebd220a32bb415. 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/ZAY362200834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5668d7501cd6f5f5bfe8f7e7dbd83bdce12fa7642def3edb542394a304ed0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ZAY362200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08562ca744894f5e6b68c72ed657276fcc6351fd6eb9975886ac656300887bd6. 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/ZAY362200836.
Nguwe (feat. Ndoni, Fey M, CHARLOTTE LYF, Upfront)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c73156610a991ee6d79ff3899a014b38996dbaab05f6e059bbad36e35d2c1ad. 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/ZA56E2303306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7562705cf9d8ff1d9af3fe3d0dd2143745950afefee401454f6f9cb1bcbfe46. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZAU1P1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904843cc5f6a365f63f331c820861a700923f4bb2048f9752c16d5663f7c469. 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/ZAI5W2000003.