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 0x119c048baa0876603c0f454b96de05a4197d7eda11520fcfc49fda158130d88b. 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/2a0dd625-d8f9-42ba-aa57-73058acc5bb6.json and https://artists.proofprofile.net/proofs/artist/2a0dd625-d8f9-42ba-aa57-73058acc5bb6.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 0x1150ff631e657a5ea89e080188ac95b77ff10bc0104f483a4299ec800dd60be9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:23Z), 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/DKK1C2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08372859357592b9115a1ddaeb1b3b877fdc648b64335d1406738d26e88adc3. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DKK1C2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81052f253f0d8f9e0cb371f0fc36a218afbaf39ad7ee20591e3c9c92f23601. 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/DKK1C2400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129af31cd5da24f351e997001444725b48fa2ef4213217861642aa2f0dad725. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:08:42Z), 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/DKK1C2400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ece925cde73e957a95e3cde3255c7f17eee1e2f4b8c7f738b841468277e30. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DKK1C2400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47069e2ad3835b22306b958c2a299442ec4de3c19b70247e0f06554bd6f89ab. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:41Z), 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/DKK1C2400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbdcddc4c44e6bdfda7ca6e021e267d916a93f40c3f31faa0f9b64c1d2d430d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:05Z), 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/DKK1C2400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a13f02c965b5d16cc18ac9f8d8083d3cd60d88e0f82e5b105dcadaa81145a4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DKK1C2400344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead3e1b76f25ecf65132420cb165ff601491a8e68746fa36dcc65f02315b49e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DKK1C2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9a33ce11c2dc9730929e45b4e229a9f0e1aec82fd22c2e17cdf8da953a2eb. 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/DKK1C2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817ed11976fe7594205c4fd2a6977fa7c3611b4c45d51abc03c3d49e67288c60. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:29Z), 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/DKK1C2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f7746b07183e63953134cd602815757bbf791e02a4a13ebd452cb9c908b22d. 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/DKK1C2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf780c048575c2a2604cd2acfcac34677454164bd401d891ba4b8f8fc4363118e. 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/DKK1C2500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a66a41aabb4361131d6e246ce5564839928b14b84bc1725a1cd9f28ffcb20f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:33Z), 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/DKK1C2500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35827aa53d1073be8fa164d62736c9005181c3d8c682bf8d41c841b73a11ad5c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DKK1C2500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b288746ab4349f6f904f0449aacc5d3be8b22e480eb7cd4bf44ce7c6aa324. 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/DKK1C2500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c3857c94b83ae68afbcc84b02eadae6bda53c317b8d9cc9a360ed70f4d2ea. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DKK1C2500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee5efc51cf53e412a7557a656b46b3872f7143d4bcc459b51dd9e823d6e866e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DKK1C2500176.