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 0x92ee82b0b3bd8bb826b407569f99188508a8e17567689c06d002584711aee4a3. 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/522fd1e3-4e70-4d47-ba9e-7ce211fda269.json and https://artists.proofprofile.net/proofs/artist/522fd1e3-4e70-4d47-ba9e-7ce211fda269.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 0x1d17198df780bb477371646245f32c142118cad6516d576d5f31ada5e690318f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX080200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2353823941a09c5392d8a3b4e678df9bf25e46727a5e61f0463275ff1730268c. 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/FRX089750067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd00b81f6d05a2eb015a085fc4d3399fba21d9cc8a3206256662adaf12456e5. 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/FRX089750322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dcae9ba8cbac727f2f973cc16a73db9b47240640e8d1e2e8315d2f7087dd43. 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/FRX089750370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5317263cd8051d0ce5045355e6837ce456365b10d3bd22f6d88dfab945f55f6e. 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/FRX089750065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796db86b1864cfd684991f85b6fcf84cafbd1972db65460fa070f21c3ea95fe7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRX089750206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26afad41362389f2ede667444ae219b1159ca8c7a23830899c8fd7c45a34588. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX089750339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5f5bf62ae0b9886be833f1f621d3ef278abca76a2c083d4f88af7e51906a03. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FRX089750073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44225db2183df77cc05a4e65ed5997caa8f9bc18a1bcf4614e137fd6ff7d1b74. 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/FRX089850122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e749a38d35af10f735730c8335da33539dfed0a9894628d30964a4bbc3f2e1. 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/FRX089850120.
Lois & Clark - The New Adventures of Superman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57ceeafce6050d547d76edbf68ef70c13c4d46497e80bbb6cc27412f7302c63. 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/FRX089750187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf903ea3529873e536c13156bed755a12e92b3b33b6fee7e1c928cc61484b46fa. 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/FRX089750332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9fca265e5c5a4f943413dc9f95ea365a3177608eb863ceab886fc3bcdd6b28. 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/FRX089750275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258bca2a82a65d3832f9533b1b5a245e42615d2ab12eb96f437d9295d8f57d9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FRX089750341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795006be347f83576023ad1363f8e6764299b7c14f3aaaff69bb226589945dff. 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/FRX080200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953420337b62f688860bff07f9b1b4074bcc97b42d8d50b48296e538a604a53. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX089620133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c81b668eae7c075613bfe1be44c04c67796c7eed79facfc4ad0f78541e9f79. 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/FRX089620155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ff956fdaf2edffdffd93d0de44fd8541145b3e615c0c0d1c470b74277575ce. 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/FRX089590083.
Avoriaz Fantastique: Les thèmes des plus grands films d'Avoriaz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11a2484df1bf595883d7389a1dd66ebe9203d3198840d9a115ad8db361bb2ab. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRX080200288.