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 0xd52591c65b27058eb492fe9477b0c7d8a061cd473752432a82e16665700f6b74. 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/61f2ecae-c9c1-4a7f-ae57-33ed885d4ec1.json and https://artists.proofprofile.net/proofs/artist/61f2ecae-c9c1-4a7f-ae57-33ed885d4ec1.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 0x5e2311c8565f0f43201ecbe0b5b9282c2c15b9d5848785eaa57d175eaf2346d6. 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/QZ4JJ1752080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a9afdf9b2e0f6dbe28b38edd2c0cd15802f8f63d0d139f7e3983642ada0f33. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZ4JJ1752082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a40ba83310bd8336710877c53f6f6aaf282da63cd72bfb1114c89f7ddaaaae. 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/QZ4JJ1752083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c6dfb853c061671f9dabee38f6323bc2a1469e8a427a72edfa2059db79c154. 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/QZ4JJ1752085.
Demons With Shotguns (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd69194cc327a215760d682bf47b67b3cb0824bc40e5e0fd6093830f61ea35. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZES51858848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e79f8961b644b2e8ba8a4f7c2597a4ab6b141406073c589e111f9aff790e54. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZHN41937889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7b3f77b7011645db0183a8ce7bda29ebd22c8d58a932e3f1a982405fbb1418. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZES52012706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca5318b77b7a5221c73a1b4a81cde48708fe5619cbaf5f15b8104d8b686d997. 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/QZHNA2511713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32760af8b7589eef65c782372e4a8ba6bbfbf9cb14f8d096f4bb9fb61ec241bf. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZHNA2511714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52b488bc3057ae8b4b87b1a69f7a386ffe9cc760cfedf027deb6356a40a073. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:19Z), 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/QZHNA2511716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90e76a3691191b07790dca35fa82afc7fba5a0fbb11ea1b33a893376848c223. 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/QZHNA2511717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d14fb465108d40f4f0b6f49536408ff846eaded3dabd1ea3570930d079e37. 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/QZWFR2504744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2e975381e31e8e9608cb94e23fc2ffad13c21a93ed153b7f21ea0dee97e9c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFR2504745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5c85453aaf13f4e903d9856176ad47fa085921e03aa7d4ea1910de45f37f5. 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/QZWFR2504746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b91db9e3ed08e7e925e7041125a9d4d4c54e0fe5cd84c07bc7b289cf9b6e5a8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFR2504747.