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 0xa6b68565de5d57fbb97cd703f895979e1ba9f29cb95e25b64af78466ba0dec34. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caf4c4f2-d82f-41f5-bf9f-bd32da6a8462.json and https://artists.proofprofile.net/proofs/artist/caf4c4f2-d82f-41f5-bf9f-bd32da6a8462.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 0x8d760e5b9770b7175ebca8c23ec2c05dfb80820ef86387933c9f31eca5271a43. 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/QMFME2320317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3060f464dd92d87432572e01ced631f6154a71ac85819bb234f4e40f41319a60. 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/USUM70504600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595925100ee85e7ec67a5517f9534c084b9c3a6c32c4dd2aabcb0dff6e223af7. 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/USP9K0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2215bc85a64921c833d5f59a8dff021cdd9c3bac024701f4525baba459fb42. 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/USP9K0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ad21e594863efd801e7e9cd1e3c4db6a92a6ad8c6f4baa637c5d0e0659d47b. 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/USP9K0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb7e85395d363142a300ba2743fe369dcceda3e46106440c85999864951a0f. 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/USP9K0900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dd75795c5373545da190a0980754d9d1b74d6cad5af79a413f0cedf8a2008f. 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/QZXLZ2515545.
Cómo Me Duele + Hay Otro En Mi Vida (Acoustic Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846c1a18a54df47264ca32660d2f4f8d6a107cea7ad20aa64ed8bb29256c852. 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/BK4DA2464476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b7380399f2b1b36898c347d00da50d5538c8432a9d711265a44036cd4d65c. 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/BK4DA2464477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cf3a64872cd2ab62371a7d5edd2c0528022047ede54cd220b8f71ba997c943. 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/QZ5AB1888264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbcc37ac2ae80971823a3d2af17a7173c9d54f604d58b164956486491c1e779. 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/QZ5AB1881051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa8456ae07f853a29096ff7a355896e7bae9156a2cd40d6a0faf5e42d5ca722. 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/USUM70615354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b94291fe295d66bd0187b6b94df6a6b028947db3e0531362240253ab414d61. 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/USUM70615351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49553c60ba24b9c676a657bde9229a6e429bdebc5803bf82cfcec889888add8b. 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/USUM70615349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c596b0d66bc3b0d639ab5a93e3301bf93e58cd558081a66cabc95e5d10d70. 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/USP9K0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64deca6c57189325c07bd770d989a702421fcf3c565bd23d9906ef322a3e3a5d. 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/USUM70615348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff0f63fc12a44a2f325cb24da3b3c4a3f91e67a0a2d926a8b38b42e1a9f4e09. 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/ES5051300671.
Hay Otro En Mi Vida - Album Version 2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21632aac5379d46cef69221b3ccceccb16ca62954c3754c36f9709b8f4f4bb76. 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/USP9K0800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76765ecb63c4a03db3e02900c1ffd9e70fde86e1e5ab17e8b19d769bc71b342. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USP9K0800171.