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 0x8634b2f4f5eb3c5ca20dbe02fc90cb8bc4106adb055b98e13dfd28b7e683fcb9. 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/0ccb4202-f965-4bea-8368-c2b2bb6ed9d5.json and https://artists.proofprofile.net/proofs/artist/0ccb4202-f965-4bea-8368-c2b2bb6ed9d5.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 0x50ac6d69d88153cdfe3f60e894500e412448cfcaeb70d969647a1e3eeaba0914. 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/GBWUL1922712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d3eef79d5f22ebc3827401d761ab4cecded91feca5700caa562b101a2a430. 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/GB0491400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2884e3f50f8e557d7c50239631787a16018474eb0e189c2e9c811a6dc932646d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB0491400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1043d8b01d92f1b9c0a27f4d4efb92196bbeaca2de6c0f6061fc701be69d3b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB0491400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54da2f96b5caf0749f5eae6439508b8927bc31f1dbd835303ec36b1de7e9c7a. 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/GB0491400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae5d75a24679dc16c70e7b01974066679f9f171103f921aa52f2d5ac44c3f4a. 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/GB0491400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1fab497c18c4f779e0afd0381c4b6102ceb026b7aff081a9c5174675bc3a1e. 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/GB0491400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6241f3eab15308d9bbd35e2b22cb2ecd57403a6eef3c9c5df2078352586799. 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/GB0491400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e8bc03d7504da12ae1cd0f8a87a962fc1ddc459a67c6fb1c7b6e226f8189bd. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6N21794979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ac197d10f6daa98f8de5006c697c027dc2c248cfe626e8bc66774c824de10e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM6N21794980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4184abd3832759619d0b29746591a4cf459fae1740eb50996ba7b66c6edb4. 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/QM6N21794982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5ec0d0fa5fbb668a1ae3745eedcadcead88eb9b1aa6997f6d9af184f2b3d8. 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/QM4TX1739844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81196fd8acca9abc5b448a1a4488614ff9a949060ecb9132dfec5da88e6ee879. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM4TX1838087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff605893ab7a4ada40ade087846bcf18bad26f286e33d7a56214e3f35cbed4a. 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/QMA5Z1400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8fea8199d701c67c38b2295140c1bfa89cae23a7f16a301d5337cb9f15f0b. 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/QM4TX1739835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89c25f3e70c7fc39fbc05e7fcfddcec7124221a51a8c9efb528888f36778318. 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/QMA5Z1400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa750f9145269bb0a6da11864b2c610d173e54389b47ca02b7924c3a041a806a6. 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/QZGLS1943181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32910ca78670b31d6b1aa934caba880d4ae9c985408c7a3c8e8b1f69025b57e7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZGLS1943182.
Controlando Las Calles (feat. Mr Yosie Locote)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544d8a8bc0b637c637e0ad67e8b5e85d88e226440355071fa8cde1296e77c5c. 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/USUYG1403384.