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 0x629f7f1cb505589f612ed5d90dfc95d71617747b9ed7a8dabcab5b9d3a7d25b9. 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/d8debc5c-77c8-4cfc-8964-e933764402b9.json and https://artists.proofprofile.net/proofs/artist/d8debc5c-77c8-4cfc-8964-e933764402b9.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 0xb71e631eb018260032b3f6f51f1984cae6370ee76d9d2f0b04918794d002e2dd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM24S1908932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75030381337e97e20e2cafe4b95c19a92b0cf7a1b70d26e3fa30384ca41058b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX872024297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c55fa72444757f414fa148d542a8c49a8bf53893a11aec95e67d36bab92b77. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:31Z), 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/FRX202115971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea30fbec3cb9a12152940625777564cffc5f525976dd11e318e5bdd0889abc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX872301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699359d32a80396cc5ead14c0f113b1ca10bda6e98a4f8173f48a7c4603dcfd3. 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/FRX872301748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ca96b4ac7de9f069e8c73136b5c04f9b91ed52f217d1ef837079118f93ad4. 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/DGA052374146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea30fbec3cb9a12152940625777564cffc5f525976dd11e318e5bdd0889abc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX872301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ca96b4ac7de9f069e8c73136b5c04f9b91ed52f217d1ef837079118f93ad4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA052374146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79de4339d8185c30161ad8cc05bb08df2df5494082bc934097fd51269379fd1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062342735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05919ae64b24a5fcc59bf0a595a84c125eb2d88d404b39849eced56a00daa1f9. 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/DGA072320208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b04fa94186bf52ec2e46fbfcdb0ae165caabc392a9bb2e2bbefd84a390fd6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:36:42Z), 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/DGA072383144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751c3c866c078484d5568d31287330356bb2c01dc2c77905d65bdd88a442eb2. 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/DGA092349636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c7517e1b5569595f9c1008df40f4b09c9afc00364d62b84590014874736c68. 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/DGA082374747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751c3c866c078484d5568d31287330356bb2c01dc2c77905d65bdd88a442eb2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA092349636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b114a241af40b3d2ded44c9cf12c557f6c2bedd98fa54e8cb5e5d6ad361feef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0M2361136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1957b361c53fb086b6c174535b05423a2888322e29e1af578dd6ebafda5d1982. 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/DGA0H2366103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ab4889dff26d92b04285a6290f65f840a7e66316c41d6068d4bc8f45a90c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:25Z), 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/DGA0T2429030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea8ce376129bcafe7711b4d077385ea5c817abed730325bd707d806bb45b157. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:54Z), 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/FR10S2548204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d1287b6b319fcd8b69f074f2874960bf7f44d9172a64ec4681077358b1df88. 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/FR2X42584056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e8b1156c7560da85cb35bf8ebd782aac532bf0c8fb18c8cb511f5bae68c5c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3DF2492234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29171770383a3bd49616213ff8b0962e23a00594f64ab7954580560f63ae16. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:58:50Z), 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/QM4TX2420044.