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 0xd8a0761490c99919e27dbbb7b9904d3c135adee3ef12afbce382557c116644cb. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b47c207-dc08-484b-91ce-c7a77cb1ab5d.json and https://artists.proofprofile.net/proofs/artist/6b47c207-dc08-484b-91ce-c7a77cb1ab5d.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 0x0a0ef940d63c79b4b565c43e895807af18152569d8e26827b96400616b563e4e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAENV2538326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff9897cd4d5fa80877dd1c25aa5a8680f871a592a0dfdd4e0a93d20d1192140. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAENV2538344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43524ae73d5aad28098b2cf5985675419c9cec6ae819bb8604968e84badf7855. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:04Z), 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/CAENV2538383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6a1e771cfb4cfe7a5a06b96401f060679c424a0c3a22f77f76b779a881d2e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:09:02Z), 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/CAENV2538346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e9f6bc04e291bfa2523d2e67722ba446a3ad338eb40760f2e4629e21f778a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:08:08Z), 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/CAENV2540290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d4e4a5191308ad9ae874b14bec440b776dfa1e285827158daa97fce22e28a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAENV2540200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc023f3ceace7bd9a8a9296ccb7221aef2d5649bdd30f77cbd56c03f863747b. 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/CAENV2540163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef707644e76b05094d8e6e5a4832e487e08f5641b3e5c07a36b2b493f3860fcb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAENV2538322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa111afa6efd56a522c7f38fe7dab8915511b79ae6ce16b7761c938ce31cd52. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAENV2540207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f791809d95e6c887fc3ceb7b0516ddb8fa305d5fa402bd00c4c2ae0b09049a3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2540151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17d5fec223862e648336924416a087b198ebe6aa7af27fdda7ec03a7decefff. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAENV2538342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc407a0e95002b66dfc50873012874c5615060769d70398a890524acd29951e0e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:31Z), 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/CAENV2538330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9183dcf68c09b9808c7e688d984c6bd941ea9ea2fa071dd070a4487370bd4c43. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2540268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b5602f292fb0be7d3cf86686007a2fc42423237b13fec8494e16bccec2133. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2538335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609b5217603d4d33d293ea0dac6f247e5c743cc08bc3aa586d501e2e104b4897. 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/CAENV2540231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f14b0f9d948af37afa9388588ba318f564ebc3587c7240373951570fe211a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:05:26Z), 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/CAENV2540217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9cf22e30e1b6d61b465d5a47478f2433fd6a8095d323b8a1af934a2aebd01f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CAENV2538384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d38e75f322bd1ddb7704c1c29716a1897ff92beb42a86d6ddccca7d66ca2ad3. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CAENV2538336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e262d68424fdd85a631518b9f97dafb1840ce1acb6faee72ca661561210b866. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAENV2540241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9638b4191468cc422cca3649a39d2ffaed7aa299b43a7595c78fac93be7b02. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2540149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931887e8447f60cca0259c0991f35be61b847f5767225246875344462fb56c7f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2540156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c4e7de25143c27ec3f614b421815e8dfd7110bcb011ee40fabcca1ebb0513b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CAENV2540292.