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 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 0x2a4ab1e90e76921358d2f94525d9cd96a22e51498c7748459b28491e69a2c658. 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/0e47aecf-2b36-4540-be03-ed16495eb16f.json and https://artists.proofprofile.net/proofs/artist/0e47aecf-2b36-4540-be03-ed16495eb16f.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 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 0x185f23076eeac29e28cf62afb1b2a6c5883e8025a88ba2ab5992e2e0fe1acc5f. 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/GBLV62006269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4937151a0c266d2b2c541c664fa5f710f93b01fb37ff89f078347d9dde8e5189. 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/GBLV62006270.
El Baile de las Arañas - Lee Jones Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745457bdb5125bd16db377a39c9aff8dbdae626ddc7182d7961b1136a66685e7. 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/GBLV62006271.
Deep House Hits: Ibiza 2019 – Armada Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cdf642c864ec36b13282baffebd979ec2c530bf6bfd823a502d582e78f4f6b. 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/NLF711900748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6342d76eaf52629fa231f88414ee294a7bd5a250a8c3843a1f2dc17ac9261ac2. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/NLF711806592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77f2c47265b37a285237487adf61902815ac791f85af1b92747886b9d35c074. 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/NLF711900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c65ec72bc5d4eebb629418eee2e0de0f20dfb7696bb448b13b0a810b5282a. 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/US83Z2215178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215711b0ca5613b43c5d593545d56c54782505be7e9c07ad21d5caf42dbc4423. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US83Z2310284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8230f1c7f2ec598361aa639b1b8fad9d801139f07ae23d60000fd255a71d4ce9. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/US83Z2225275.
Eclectic (PAAX (Tulum), Paul Deep Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b64f093d0a8b4f2bc70cb3e4ed73a20e2a0fa88f87c9a85b0473ba74369633. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z2476887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ace2f5297426cae8b0dd6b9c4cf80aa3fc5fdba2be36ebceea6e20820946d10. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEY472082136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaada4f62a8bf493bb5cbc85866f7da85c61ae9285554f28ddc6ccb1a9e273ab. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/DEY472082137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e0b1f156858d2b981f49187fe62d2dd6738d2488beb0ce8acdf13d53ca0452. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/US83Z2242123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c65ec72bc5d4eebb629418eee2e0de0f20dfb7696bb448b13b0a810b5282a. 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/US83Z2215178.
Bar 25 Music Presents: Sounds of Sirin Vol.8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7763cb7bfa8880570b86782664b05e732fbb9fe2e891dcf830d8cbeddefd29e. 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/GBKQU2202635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c816a60293721f89339e6ab2fb6787601f65ff913632de957eb196298c0120. 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/QM6N22427116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f35d344e2f8a76210ba059495def6ef2f89b2bf982e17636d183bd96ecf1b. 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/US83Z2115773.
Lux Aeterna - PAAX (Tulum) Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215711b0ca5613b43c5d593545d56c54782505be7e9c07ad21d5caf42dbc4423. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US83Z2310284.