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 0x317526813c062b580812edba86c499fde7ff5b8e7d6abd3a79a70e8884e85232. 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/7c577024-e50b-4e1c-8547-0b9b1491ec2a.json and https://artists.proofprofile.net/proofs/artist/7c577024-e50b-4e1c-8547-0b9b1491ec2a.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 0x3a406f253e93e1e11a760189c8e22124ed3465920275aa11f6d59de0d2e4e9e1. 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/FR59R1645594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063bcf388d10f456feeee7da05771c7b5e9a1616daf493bba3659d2769e40457. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FR59R1645595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc1835e5512966ef97f07da8c88438673621a0a63ac0622e03012ae21ad0106. 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/FR59R1645599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634278d29a2804c80c86dc09f995b92ba1c955b307c17a80f4b6a774130eff07. 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/FR2X41788403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874703728643f36c95e0496f9d2b4059ad75d105777319a127c6f071a1342a5. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/FR2X41788404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838274e74e9c05fdd32da3428914c71f302c2af36c10961b3c2cc9dbfc5d0ca5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR4HD1701301.
Tu Me Donnes Chaud TMDC (feat. Djelissa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf05ee83a0028fb462cd5ceec9ffc8dbed1e8b44f3826e64f879276bffe0ab76. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADD1767030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c1094ff0757c25d1a11756b4681bbb127dfc3759112a1add880e0146c7fbd9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRX282011863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0593cf58641606769a9c992e9da52fa0d504e00a51d8810cad4f4e8afbe35f6b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X42217203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36f88f657583f49bb88e083fedc20a18fef72e2f56cab2895a9100cd9f1c69. 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/FR2X42258336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257f02078c4af5400da59d7c3b73768c98daaf178d49e95c2e134c1cc70069f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/TCAGG2270476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51f9cb9464be84d85021c0402a16553abd4c6fa45b1c8e1287dfa81ae2300b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA52304717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea74601671a64b1184953b1a5e4ec555fb165f70e92f6da9b34f0d679d1d46a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZES92328833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b02595ca3944f3e97bce9f3773a9149937c3eb4e7e2c8ebb556594b295ef3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTBF2322935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e75c6008b1dcc641857218e2d19489e7dad90c43a45f7f855e381632908f39. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872449988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb30fcc93b64d4555276d4cac354188f53f36ad69589ab48ead2d3f02e15d8d. 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/QZTBF2494749.