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 0x6af38fe3782c35d4531decdfbb5403966d13bdc7a76af190899322dc8f211c60. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db87dd17-6402-4b3c-a027-b76bb17821e0.json and https://artists.proofprofile.net/proofs/artist/db87dd17-6402-4b3c-a027-b76bb17821e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Taban Muy Bueno Esa Habichuela Con Dulce
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 0xf8c25e8c2f38add301413b51569ba3781a282376e1a80d0d1b68795edf4fb2eb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:26Z), 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/SGW502456276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f681ce56639e2f19671c603a14482f429beaf9ac3030b2a66d75ea6d5a1e27. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXD7V2530227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b3a77542039f56b9dd3325b10849185782b8b7422565464f8127f5975034fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXD7V2509791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9543c87a9474cd47e6968daaac4fbc52031cad379407a69ea1c20f40f00fe18. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXD7V2536467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d5d1e02fb8e6015e61b54e2c0c685150afa13b16cb12e58b04a1d9f322131. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:28:03Z), 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/GXD7V2587111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7353e60c4434f10d7eeffe4b847af2df817526509d2b1ecd5ac3ca3bb983e22e. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GXD7V2527324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d3f81d48717cc7148f0b19ca9790f553b94930754beb1d95df3c0c89d33c7e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXD7V2539714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b6277592a369583116dc2d4ac028ae8c490610c820ed369ab6ff0ae9fb75dc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:50:30Z), 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/GXD7V2512086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5d84c1f3b691afcdeda9efd30e80a95059e630e2a517fa160a0ef976f5303b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GXD7V2557762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf9dd926b9da81129139c120aa64788ca7fecfffc2f88833293a9ffa0bfc1a0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GXD7V2519006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691482a7a316fa0b617fe6226a356089d49a8dcb1a5de7feb8f5687f974f52f3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:41:37Z), 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/GXD7V2504277.