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 0xb1e05d6b7d9136e94ec0ebf997db3262f23475ebbfe481fd02c55ade6305880b. 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/f12832e4-b76c-4836-ad35-59bc4363a99f.json and https://artists.proofprofile.net/proofs/artist/f12832e4-b76c-4836-ad35-59bc4363a99f.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 0x4aea1616ac0ad5767e0c603b45c37a785afb6a37bbdb0653f61d2bf189e09553. 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/USHM81507118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d5c0e2028d3ebf17b0394dd60a5ef19c243f9316b005224d0ee4f041ab58a4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM81507122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc33d8634db5790b465bf01fc8b04ec46afea98e6fe6a0d1a97606dcc3ce294f. 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/USHM81507123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996ddf33fe40a0efcc9a73289e84f4addf9c49a79c697a17ef4b08aa3f42f3ae. 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/USHM81507126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15354971218002c9c3334e803a9ff724ff42600c9beabe71b9c293788b271918. 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/GBLFP1632340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808fcfb1470ae23376baa73b2dcce6f083c3e68a9139cb95c6bc27915e628f05. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBLFP1632339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62764d937e82d201526e9b61dd71989e8885be2604ab3c653332268a6755f75d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBLFP1632327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3b4b15c4ca511223ff45b6be8918c4e9ace33bb6784d056836d87ca2ac1c3c. 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/USCGH2010598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9902c620751cf4b0262f8c2b7babdd1292168de74ea964e947d62eb2ea1688ca. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/LBA0B0900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddab2bfd7175e3b2ef844555d7c2c7ee2ec3e84f061cdea183c049ffa377fb0e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:02:31Z), 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/LBA0B0900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc7ccad271b1283c14aba66aaa627536e4f38b54c33b4a20552b4a1230f6be4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/LBA0B0900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec29af8297c77f823b74d62c655bc2b9f73d2399500409fdffbaf76f7adabea6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/LBA0B0900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588465325878b5d1da9707baad5b9d1f30cc6335d5fa9dbb257d3338fb54951d. 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/LBA0B0900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b6649898bab3b2974ea934392fbb257a7373f3811ecf28215ae7f533fea6f. 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/LBA0B0900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57cef1d0f958aad7e1818ef3215328d92c04590747baf27b3537f45414fa485. 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/USL4R2215097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e0c5894324acfd126631d5a529cb659be0ed7f210fe60c17ba6ebbacd88be. 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/USL4R2215099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7d927aa65f8593e46f504ec4a7de6a45e285eb639ee12dba217a27a04a9e7d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:39:45Z), 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/USL4R2215100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51800f092705e0a5201406596c90e7bc5435bd851979371f392dda0f6cbbf0ed. 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/USL4R2215101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea869dc35a4b73623dfbe479cb3df8d2dae9deb13f2959cc03b4c7d408fcf99a. 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/KWA002500280.