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 0x43b25535c868c7fb5ede1ee7a962afa7de8501cd178115dfdf56c8faaadeabc8. 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/8b6748cd-8e90-4364-81f2-a24b5fb00d3c.json and https://artists.proofprofile.net/proofs/artist/8b6748cd-8e90-4364-81f2-a24b5fb00d3c.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 0xcf6175d6ddc2ed7e61f3a9e826710b0020f86803a235624e4c55d05ebc621ec6. 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/DEUM72204139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf414fc17556868a1047979c61cc8e2cc17ecf34b75d295134f3659c151e1acf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEUM72300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae502080c76e979f23291a95f8894ce7932bf82ab98b28e5a3b700fd301b995b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:13Z), 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/DEUM72403067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae502080c76e979f23291a95f8894ce7932bf82ab98b28e5a3b700fd301b995b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:32:39Z), 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/DEUM72403067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadababac49ef64cc05ade1a35bfcb21ead867db0f79e787c74f99dd34683a24. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM72303948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf991ea87802623336cb270e2c25edf3c3d0581d78499c47caa509b5a831f588. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEUM72411552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6175d6ddc2ed7e61f3a9e826710b0020f86803a235624e4c55d05ebc621ec6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEUM72204139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9749431e277d863721f62456515105749a7245ed64e4bc57cc89a73dbe52e6. 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/DEUM72411555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702dc9dacfb1c15d8677864fb122708f9b5cc09f9256efd840c47c9e752a4f0b. 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/DEUM72204773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe66c72bd4fb55545f244213240b3fd919b2811e9bf55f87fb19025ac713e25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEUM72200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a75db880aeb7b45bcc5c60573f91a1be7b5b7162ae0b8e4541501f5b1c2916. 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/DEUM72406785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702dc9dacfb1c15d8677864fb122708f9b5cc09f9256efd840c47c9e752a4f0b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEUM72204773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c402a7ab8d0be0ea85a621e959e5ccee38b5ecb28ed32e1fa72d7e7f8e4100. 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/DEUM72410493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16e9bc14ad9b470c2ac2844af020a9357eaf3924629fb26b739290f2e6bd062. 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/DEA812200408.
Ballermann Hits Party 2024 (XXL Fan Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5d11ab6835fcba8986f96d4a31db6e27a22792c574af96e93c1534e1dbde65. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEUM72204774.
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 0x3afe4c833fac41ef88c765bf991487d18130554af259fc519c340c2a03c86b4a. 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/DEUM72117502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6b4253602532d4af2e06b3fbaad942814841f9055f47ca5e6c4959b3b008e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEQS91900424.