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 0x84ded621ccaaa479319d6b6993a794607ff7457a7e6f8a3a55c6a0d8924fe212. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3494f632-e916-4302-97fd-2cffc85019da.json and https://artists.proofprofile.net/proofs/artist/3494f632-e916-4302-97fd-2cffc85019da.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 0xdf9b0306cfe43313689a8019d744a471821dc0d903e01c1c99b34b6d8536ab11. 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/USA2B2401712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b8fb57b8429190a522bad863e350f7ec0d27abccec44c1cc2a087b992d39b3. 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/USA2B2403814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf616ab1452254e5eee4a9b8a70a3c930ee2167685a3eb57aa84208244f601eae. 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/USA2B2403815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a0294fa186371571868e0861b74b6af8823e65b150317b6b5dfd841a31de3d. 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/USA2B2403816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b92a200d15dd6d893d5662fed2b63f7a73d3f409be129d160e502abb3fb0f. 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/USA2B2403817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed554047b3e22e937671d5ded0a40661670fdf1f321eedec1ab4680e69207f8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA2B2403818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acf961c8170745397edcf58cb53fcdd68d7b094f34d17ebe0ea514e0fea5c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2403819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736f543332cb9d3101b41e879252ee269919f27000cc0526e29a87afbf4dae7. 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/USA2B2403679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108988299e1c126630e4e06f496fb2e017b7abbfca4a492b0236ca0e11a56efa. 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/USA2B2403820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab33f90f3be025b9f830d57da375adf2d3e475a94d2942fc1a0c721e3751254. 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/USA2B2403821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fa584c1320688a305d11c975fec9f0a70866d01c9c594234259e73cf194450. 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/USA2B2403822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8d29d674effcc26b8573db3d39c63fbbe040787b9debd64c3b377775454fcb. 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/USA2B2403823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b5d8c8b9c7e025d35ebec8363645e38d6e817177c345faf1d1bad12250713f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA2B2403824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a684eb237d2d0f1bb6dc42ce6f8b45687b591243da1abc1e99ec201b887cffa. 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/USA2B2403825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782b947a943e2faba08eb565541c384a89cb8887162f186a5362306777c8f66d. 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/USA2B2403826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08740c7cf416230f04abb9bba04468f9d02116ae0b5e7dfcb5eaeb2396bb4765. 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/USA2B2403827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e2be7f76bc82be75fc85d2deb43bd98b6b56c1aaf25dcbcfed805c49aeaea6. 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/USA2B2403828.
Shorty Broke My Heart at An Usher Concert In Winnipeg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15256a266d358e47800d7de71f82fa729ec4673712359ac378277a15912c81b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2B2403829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfb1ebf5f5a25b69e3ed7ccf3c869cb7d5c7b75078dea145cd33b52add3fd4d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USA2B2403830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd630bd47690f81f42e79f37dc84535791b38ab7846201876ca6570d6ea0259b0. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USA2B2403831.