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 0x58a85aff004f79eed097ee36ee6e05f0b399d77e568446247cc21ede237ace47. 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/8bad4a66-0253-42e1-8e2d-debc5b3f3cc7.json and https://artists.proofprofile.net/proofs/artist/8bad4a66-0253-42e1-8e2d-debc5b3f3cc7.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 0x3a61417cbf3686f4fa0fe824bcfeb399e972c49b277f13d4c90feec486d84499. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLUW21900895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eca5986e3f06f3163dc9d5a97ccc086119f9d0070c490b458157acd074b029. 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/USUG12201165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ac690b1402af36be3fd2b4f596a9ddd33aea340c648d51db305f008824fdf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22312778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae92f6b5bd48c2113eb65fa8bca6442389dbc4e875ef0d64e2682f310f0b3c6. 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/USAT22312457.
Gimme Love - Armin van Buuren Remix – Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bf92c231783c7db4cfa9f32bcedc3b16450706a0d672ed025dbcb2ed76109a. 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/USAT22311043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396501434a2fd50ca805558309a96c0f67ff836a00c75231a2db9f101e90a6d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22307798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9144d8d1d9cb8e021b27fa3c9e569c5e074148c428bd0f73febf4bcebd80f7d8. 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/USAT22309628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. 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/DECE72301698.
Words (feat. Zara Larsson) [Sentinel Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d789e03a0708bc37710b6eac98c431ddb6098aa2f7486a08300e8400977f110. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG12205919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a05ff41028b340832e84c04ab5f74a9e071f97bf1be67cc2b3fd9f2a7a25bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM5S2402278.
Tomorrowland Music - The Adscendo Singles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECE72301698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ef26763f2c0d49164a5e1e290d5bd0f9bbd143d2d45f9670227bb1fddbfa3. 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/NLM5S2402367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b74f36fae4a9c3bc155807ce58be783d12f43c2a79dde509d1bd5f68d0e3b1. 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/DECE72301698.