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 0xc5cdac44d6c6932b9576abdb564c6611a07f37f3b665177a03a90204fbc0fb8b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bc6e619-456b-48ee-b75b-dbc7956a3f28.json and https://artists.proofprofile.net/proofs/artist/6bc6e619-456b-48ee-b75b-dbc7956a3f28.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 0xecf774b8c44b1b321d53141144e791c3ab2a0b77077ebaceee27a4f4776a943a. 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/GBJX32232007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc77c6047a446be7933c669c4a15f3b57f223084818dd2604fa6519ae36370. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ021906347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96434ce892889c7bef4a0644ba8028d85451ef081673c7b7337ed42543114abf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ021906348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200ec007db307bee9feb9aa81d037f28c025a13e426abd8769a7b198e859a70c. 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/DEQ021906349.
Wasted Love (feat. Dougy) - AN21 & Sebjak Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef0ae0caaed5781126fbf1252c32270dd0ef4d16fcca17e4a5e1105673acf23. 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/USYBL1401619.
Schneeweiss 11: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc77c6047a446be7933c669c4a15f3b57f223084818dd2604fa6519ae36370. 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/DEQ021906347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ae163a5832203ec352e8a4035658eaac54f75ee7b7551fcf577fd7acba482. 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/USA2P1701935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63976703cad3d993a0f0a41e967b960327d51308d147e05b831acd248d0d1d1e. 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/USUS11202865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9370f43677a7760c6bd0f6b9a4c13f0b993a169349cc2829206ee0e41320068. 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/USYBL1402017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7abdfcb8c95bd9a4a09bc75399170ceac1b4f333c3bd7f36927b5d135a35195. 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/USYBL1400952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc77c6047a446be7933c669c4a15f3b57f223084818dd2604fa6519ae36370. 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/DEQ021906347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8d2bcca37f294276cd662340dea1955e2203292438fd2b1a806c1a20c5fec. 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/ITFGO2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4fc1264b8efb080db9bd5ed6a5db83393cd38bb5e09d3a93718a0aa8efb45f. 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/GB3CE2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa918e2cf8886a0a270e284e8e43610905e7fdf345bf45d500d70203e64abf39. 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/GB3CE2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f488437357276fe505ae7ecffdbb2028c9959a3a0b378992d2d5e7aaf618ebf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:23Z), 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/ES8742024105.
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