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 0xd3afda5b2f1528dc4114139fd325a74565450e47ef5650ffd4c9a3f2a38fc990. 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/eb6ff5cc-4d5b-4336-a9e6-b7b086586640.json and https://artists.proofprofile.net/proofs/artist/eb6ff5cc-4d5b-4336-a9e6-b7b086586640.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 0x934c0c6bf3575df7d544960c17b470a31b398e293dac9527d03a56f0d33785d9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNMZ2316740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d536da20b678ed172277030902d4e5135171a01d56d9d52b0a6a7d6ec4ffd0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNB82407115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b1824ad266e93eb440574914546705302a4bc7ac0bbd6de672342b58d7b097. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNMU2481195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe577678476c1987ce3c5dd1e46af15a61e127d777108cbcddca946ccfb9bc0fb. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZNMW2442379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b00aebdb68781307ec976f45834c7260aa03e7731711d91b1b504b87aef63. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNMX2495216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13274da0fee8655f114758f5737dc4f9b0e79b9b09078ef1ac7afcfddf810bab. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZJG52550698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb114f104dd0e090082ae75ca96e83663b17c57273061f95dcf0c837c701d01a1. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZJG52550700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a63f8a245d827e404de305b4396293551e18d317dcc130fc8d9561509f13d5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZJG52550703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4cae1eef4eb84b67737f908af7f770bca73f76c5560b92df8a80bee580ab08. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZJG52550706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e133c8ce46cf6edb158838d46253a5d2070b9c0a40f67b8aaa2edcc213aef4b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZJG52550707.
Late Nights/Early Mornings X Hurricane Wisdom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fd540ffd460a60f13324e798b4e1551e7ab25ae1cbc64bdae1969769e23d72. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZJG52550708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f77a4ebd707722aac81b79fdedb35c868672c61b1bddce97675664e611532b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZJG52550709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dc47615be423a6ffbe974d17c5ff25aa5576bfe73ab893aa28f864a144076d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZJG52550710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61af65ffc8a414afb197da56da8e3715005e1133f8d65a31e2bbddd8e070b7c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMWW2566046.
Signed to the Streets (feat. Jay Burna & Hotthead Yungin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d2e7fe44a1ded584e06de472e5e63abd4f212fb4df2ca4de0f800963f12ae. 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/USUYG1567052.