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 0x3080392fff2dbf340144727f2205bc44eb09ccc4c21189d6a3febaef1d1bf83b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ff5a250-fdfb-413e-8ba4-55360ea86c87.json and https://artists.proofprofile.net/proofs/artist/3ff5a250-fdfb-413e-8ba4-55360ea86c87.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 0xfddd1fba55207c50bc24976b250d184906cf4efa217fe5bd86aa9119275a900c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USI4R0611826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e986db7c2184ef38c3063d9d88c5ee6e70ab9aab5a034645f3fb7a492c9ac7. 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/USI4R0611827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c1cdce5ab7d2bdd012b3c767858885c33f0ca37b0b729ce8a1a071eb9f218. 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/USI4R0611828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966631e69420acd9b017722c7a4f8501fbec3693d04bb723fd267c640b6de19c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USI4R0611830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd91938d8cfa8c56b9c0ce04b8d756ccda103e203ad1daa6acee3997a6c2937c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USI4R0611831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa818534033500f3be11fc60f46d614c8229a5bfccb7aa1b9d94fc7f461078966. 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/USI4R0700349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4775ed109319f45d9c1ca42cf4ec1f1a4fddfe2a27b41fccab0222a8dec4fe09. 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/USI4R0700354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9a83188386d70710246daceb0c68864559cee133bbbf8187ba5be01cbff9ca. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USI4R0700356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc7c3a3a2a7310fe2217f86e7cd9503c03dbd2c6f23cd824c3181770a38d64. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USI4R0700341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7546bfad7ac3b1eb1a72421d2b012d5f675dbe83ac12ee558eca2c86ecbc45. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:42Z), 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/USI4R0700342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed9debd655cdfbd11a4e693f039c4b9c3a296d0381b6e91e7ad0b47ad780570. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USI4R0700330.
Gothic Vampires from Hell & Covered in Goth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80559e0f7537d849f683c7e9cb6406ec656685adb7561b3b0f9411800471de5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA370962957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03fcd5e7b4ecf91deb788419d108260895ea5d8f62a984cf6fabab4e4050410. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA560783568.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9207ddcaa2fab966222c2fb2d3f4f53eef4b4bf42e7dd56837c2f08e1a7c3b01. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA370578191.
The Passion of Covers - a Tribute to Bauhaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5e716c32fd250ce99ae27780e8404407f1a519ef28cb658ad27ae34bab1c50. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USA560897727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce6b72d86eeb6155e9f35ba2f036af09e8e11897744e1e127bd49e9302202b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA371024919.