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 0xfde508f6f31b075a9f2228b6b8207449cc430a24486e87ea904157d457306c69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9be9659-d03f-4598-9b00-ecfd985418e5.json and https://artists.proofprofile.net/proofs/artist/a9be9659-d03f-4598-9b00-ecfd985418e5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06cd863a8a774491e6fcfa2fe8f430cfd8241e8689cd62dcf4795bf886fe3bd. 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/QM6P42366147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d274e26e5c3cf7be20f50206fe56c05404dd1719cac5fe89474986c07dc878c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6P42366137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c2fd4f06e15913bbd1747ebfc50c810c3a532fdb36015c72a0af7c4139a6e9. 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/QM6P42366138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e3cb5b17580a95436ee27974630f02120e92630cdc67d5e52727f61ed2143. 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/QM6P42366142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847bc4a2fbccebdfc987f980cc5c0c14541773e2b39d2fdbed936fef7ea31c55. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM6P42366140.
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 0x67613854953838fa249bfb84f727d4f8c6482697fb2ba444a4a42586b3950b83. 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/QMBZ92158025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8ca4012bf5476da8b7a289043d15bf0d5fed0903efecb9041d0c93646b9106. 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/QMDA72441897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a7d7d5361eff0c56d5fcb7cddb7603c7dfe278db8b94a570a435c2ccbf613c. 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/QMDA72441898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543c29951a6cd2f5273435901c0a96078ca552f57942462d9ffb6feadd2bf83. 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/QMDA72441899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a6036890b6d0f41d7a842f7b2143e06911455d93668ca1adfc2242bf43c2aa. 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/QMDA72441900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76504753f75227a440f2ed8e91ac307e74b2f23e897760ceec12f744791e240. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMDA72441901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e6e3294f1a9ff88d350f7dcbc9b8c85360838580dbb697d0762304655b73fb. 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/QMDA72441902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf133bd9006b07aeb967dd2e5cfaac823a3ef0850980f48f9b1ad5aa6880f43. 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/QMDA72441904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1f06fa25d7cb6ae9ac1c35714704ccb643d9b75c6cd3b84bc52da43faf2132. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMDA72441903.
Se Mira Pero No Se Toca (La Bella Vampi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1ebb8fabb528f9db1a30d2b62a14f4dc67240f80f0a6e2c23ee52a414ceba. 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/QMFMF2436898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a86d3d275a21a4883173e3208273e72d8bc5b1480020fd271e108db884726. 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/QMFMF2436889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e472ad4a31938ed8538efc8cfc75f15516573ecb8c1705f1ec8907c3214a12f. 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/QMFMF2436863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e3df7e91859ec1ce95f2c78c7b697bd87804d721d19013df765c4f19cb7c4c. 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/QMDA62496587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc8ad7d06948f6f7fdc1ac3019f8c6feed1a78703f483e209341353f54d8de7. 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/QMDA62496590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4d8298013d41adb65dda41af37506f8dc66b04098d9b4705c86bb9fc1abfe. 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/QMDA62496586.