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 0x85291626b6dc34f57d661f1dcf2fa39a1645621dd19263aa6b6fb1ce8dcaf618. 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/77237f4b-55d0-4c32-ac59-c27a3e930adf.json and https://artists.proofprofile.net/proofs/artist/77237f4b-55d0-4c32-ac59-c27a3e930adf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5decccd8f596c1e29d99efd6fce6023bcf360d07ec74c1ce9f5cbd492189675b. 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/GBLFP2050422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1edfad16e8e45ed7838baa3cf342cf246010d6ab16b6abb8c998e34c1b1c757. 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/UKXN22044654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9189e5252d0109fa51d87cc4cdb26190e153a4265c3456dd033df322bfcd8e72. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBJX32363502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc15e72c9f1d63c69ed0843e6244610eb07115967cfcca2e65ca82e051b3f0. 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/QMBZ92303345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1390eb24461b4d32731016716e1055d2a35623ce5928f82d3ae4013fd0f71470. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBJAJ2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c313ff7b1d68136f0177db3c393cbb135d0a45d231796b381bc22ac8b120de. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBK6Y2411401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f6428b3633bf194d8c9af9fb96b3870e15847d861d8645af9e8282715ef703. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBK6Y2411402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe662772a82c136975e5d31307476d132519f776de22145ce020d677983b2f961. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:49:00Z), 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/GBLV62413565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c34ede83f530021637e78aedd8017a0afd5ae7a4f55717a5319176ae776f8a6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBLV62413566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e755ab5f1a00376a7b744aa56559c38221f3591c91561eef517fc849500942. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBLV62413567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff9d1bbeee5bce881b5e345fb90a5df839e007c868580fa982130a81ca62995. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:36:00Z), 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/GBKQU2501666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe390e651af7e072a26075333f50a3ad39d9b6542618ce9667ffbf058a70a4add. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBKQU2501667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3f3c8f758a2434898dba1133004d0a59b6768c60ed3c08cd1aaa6473f1a9c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBK6Y2526201.