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 0x1232bdcf89a9dd4843f2b6ca99ec3eaa1d7ca11ca2a17f3d4097696028106522. 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/b2927aa9-bb06-4c60-871f-a1b0ce9e25d1.json and https://artists.proofprofile.net/proofs/artist/b2927aa9-bb06-4c60-871f-a1b0ce9e25d1.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 0x06874cf148f620bf9ec52636f37d731f6f447dc0a411988b9537c480984be37f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRUM71700806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c3088374cb3b1e3763312521ea0d42f807b7f7f1fff863bb9c25370f97535. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRUM71900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6331179c70e938025dc25f3f86e81ceb8a772d7f3f8c82f8f416e11482068ca. 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/FRUM71901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6331179c70e938025dc25f3f86e81ceb8a772d7f3f8c82f8f416e11482068ca. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRUM71901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c1f8fcbd0b9382b01f4d0b2839d14634de59efca55750a3debe49578c0610d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:48Z), 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/FRUM71901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c418d7c303f6dfeae4c0695c6b51b4db8be866f85aa967e16d39f00031fff49. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRUM71901415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c1f8fcbd0b9382b01f4d0b2839d14634de59efca55750a3debe49578c0610d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:18:03Z), 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/FRUM71901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0150ac7deb933db9339ad7c1664c0500cc80ab13cc93a1b539c72ae52be7f988. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRUM71901409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf931d5a0bcadb6ef86e2b1d25d7ba71f6ea0c94549ad0543056fc28ad588f3f1. 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/FRUM71901410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790d86a78a19687692574545d7877b8bf824c7722f32ea8c289652446250a3fe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRUM71901411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e40ea03f901177afada509f7058bc4d0e6483d67fb38be9fef97978c3a19d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRUM71901326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a6f0403ce6e2306064a8583c1c3897bf423a51249131c0bd834e47b3c36e6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRUM71802314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e398f430e779245c360c168df9b8c6b755f1ce68c913142ba582adf61e76c72. 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/FRUM71901412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc10c04c3e1d6c8be6494562f0fd37a95764755c6f3432fae6afc8a537943de. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/FRUM71901413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9d8252cc461de6c1998b11207bb5146ce72281b595e9f3ba9e3729d7466a8e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:16:27Z), 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/FRUM71901414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c418d7c303f6dfeae4c0695c6b51b4db8be866f85aa967e16d39f00031fff49. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRUM71901415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0af85ed94e527fabff2109ddde49884ab449173f4e742781324194b2fcbf3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRUM71901417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd09878289d8718da9c25d796a09e5bf7c8b64d356da597b9af4dffbc6226dfe. 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/FRUM71901418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f98cd1691e9b52963d3ae497fecd1b8edc81a4fa09020ab3c6c8ba95a587e85. 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/FRUM71901419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c3088374cb3b1e3763312521ea0d42f807b7f7f1fff863bb9c25370f97535. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FRUM71900562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ae6be76961e3b2119f5722b6434db41d7dd348a1ce282b76ce259b1dc3d868. 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/FR9W11614399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ee53d3285556dcd1c6cefa76968f2343f67ce18e96e61c451410499cbbda3. 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/FR6031500550.