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 0xd96fcb988a668f0cd2f84da544aab3e033c5376f961624dc897e97ed48822d0d. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f584a55-52d5-496f-ab0e-73ec517bfaa7.json and https://artists.proofprofile.net/proofs/artist/0f584a55-52d5-496f-ab0e-73ec517bfaa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lamma Bada Yatathanna (When she appeared, with a swing in her step)
Zein Al-Jundi: Traditional Songs From Syria
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 0x5aa65cba7fb40e49e27389fad4caa148defa654a516a9e8575e29238de3504ec. 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/GBCKG0600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d0ee44f89fc7c6681fcc3309204f76e12227a517041309a5565d8daf8cb299. 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/GBCKG0600087.
Qaddukal Mayyas (With a lofty, proud walk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34988d966927e816a012ef86b8f12e3f02756c09110a0a5921ca87477711e4ff. 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/GBCKG0600088.
Subhana Man Sawwar (Praise the one who created you)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b389e0da01899c40089bc9032f6ea3e4cece9e130a0cb1c852f9834d5eb9df. 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/GBCKG0600089.
Qoum Ya Nadim (Get up, drinking companion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37addaa3f9e0edd556013a4c4344cde8b480f220e0d2d33c56c911a1cb9d3b4. 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/GBCKG0600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d6db085adcd2dd66451e46a8508b724c37831794bc274cd66e46c644d1d880. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/GBCKG0600091.
Ya Ein Mulayyetein (A catastrophe happened)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef58b9aba38463a840dc437e1f7f3b3ce19ea63b35a9bdfc6f7304191543033d. 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/GBCKG0600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6741bca9b72c7bcc2c0a9ea17cd22d5300ef3a4357a9d5ca53253ab579e178db. 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/GBCKG0500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d43d328bb3bb898289634449b373a629fa2e60816c73d46eaba4d683fc7cd39. 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/GBCKG0600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484482f29aa9048b67cfa741194a4bc4704cb233e621f8f010712c30841d37b7. 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/GBCKG0600095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d505edd1e92b707ceec9a20b43bba6c3413782dab2b105747b22c4c33df28. 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/GBCKG0600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e7ff510b4359f971465ec5f25bb0727e32079f666a3515613e07a0501dfdcd. 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/GBCKG0600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5856e6768a24d651c2ae56a2221c42252079acc004367550a100b2455f930af3. 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/GBCKG0600093.
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