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 0x131de0b79e945d53b6ce65735997c3d712f8ef58d6684e8cdecbadd131119f7c. 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/f827cc88-4848-4e70-beb8-211233276b87.json and https://artists.proofprofile.net/proofs/artist/f827cc88-4848-4e70-beb8-211233276b87.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 0x54c48c6dcb8074efeef5a1b2a437d8751eb2c18645e33bf934d8d7c48a333fb6. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USY282004995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53abbf75aca893ce400a84a15844e753a51b930a8e38e0bd7c633817d855d330. 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/USY282004996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46656b4bc26bac34af0636cc3fd3fd4187c4817304224aa573ac8717bd5821c0. 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/USY282005008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb224ab5c31f87f08ccc3b1c038c8d12c3690920d8fee34a3b50e7eb377aa2eae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82141310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc923978988142bf104e728876efea7915d275d7a098ce24a327c14aca6d0025. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDY42219501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52434c1b740fa7f44cd5bbec83003218c2070adc1dfdf391400273f75708790d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM82241954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5fc5545b6311c57d56a86d9d8eb302fdf2d6eeafa2f396abf59a5f7ee4a220. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USHM82237537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62814f6236a4f2eba4e2d56840a3de42e69f8a15cab09bd6f1110ad7b2e9e56. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZLBC2335072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba161af46d388e99c783a42841c5b1a0d6f6d6e9efff6a191468d85bb83655d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZLBC2425674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ceec9c8a5f62e6852fbeca412e69a88abc1430b1869d47f83518c70fbca584. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZLBC2425675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52406f54ee0f76f0bd9a962d601b0ac24f3bba046866f110a350fe72a6f3b0c. 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/QZLBC2425676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484de3ec9d974f71e740c6e164d45bee265fe4881b2393bc8ab9099db9eff669. 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/QZLBC2425677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f4a2005bbdb30d5ce73a97f8c12d730f03e19c380c6e88e1b9de25fd175f92. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZLBC2425678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42a2f5df9c2ac119ed4c5d6c8a95b46db7cbf32a7236da48daca62693dbda91. 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/QZLBC2425679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f1e080d3830dfe65d818ee6f3dff8bdf28d9f22602d55e9e7393f0da34598c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZLBC2425680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf84a772799c58613011bbf91daba6e5576c7a8cbf85074ddb365cfb9aad11a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZLBC2425681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a18608c3414c93498adaec54f8cd7dab54adab2607979104484833594a25fb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZLBC2425682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cf3e9f3e98cd71711eb237f05104d706fb7c3bb3c8f11fdbb6886ca4e801b6. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/QZLBC2425686.
Crew (feat. Brent Faiyaz) - New Impressionz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9126d238ca2b91838ddd7f1e278adff58a4f152ce9707629f62d5a3f531c26. 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/USRC11702034.