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 0xdf25529617a34087e8dbce4250f5c6b0d1b256e4452d314d67626467a5b97432. 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/8ad1fe64-8f45-4e6f-b065-9647dc879d65.json and https://artists.proofprofile.net/proofs/artist/8ad1fe64-8f45-4e6f-b065-9647dc879d65.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 0x4b9a041e1fa056e9f42727bf3eeb10c73e152417c6c4fd066f74bd2dcec4fd35. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/IL1012000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd079c34d949dae59e244bbf19dcfa4eb7248eb81ef2470d1ed362e0dc47d627e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IL1012000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b617ad7aaa4938da1f1ea00b77efc47459f7ae9e6c5a49c2a921a922d181cd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/IL1012000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6b6a2ac0ec4cd49899e7ed15888822d227ae1d175a91b63404e38ccf2c324. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/IL1012000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72450ca5648a82d791d6a23e5697fdf8bb535652e4d774b12081ae277e0a8733. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/IL1012000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3ad2d6337f9dc4c1e62460bc2377efb0b51004a8e2dc3226f56587821a0f9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/IL5842031056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f402920a9bbdf0a36d809c11a644936a23eb5274285c970f967d9358f6e1e8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/IL1012201297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa951922018949ce9022ce2f395e6daf77a37361c1fd78cb470ca375ffadb7995. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/IL1012400755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642071f7027ab943721e3186759f4b34ff6a9d885fe0953ecbcaac61f8646569. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/IL1012500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c30b47211df82a371ede4a9faa048a875846d97636f09e6609351d54f2db924. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL1012500684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1541701ad7309ee64cff631eac52b452be350e7238bbcc45ee7f89cbe171fcc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/IL1012500685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fad271d0662ebcd95e475bc3e494eaefaffcfa356554d7c92c9e1d479d2df21. 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/IL1012500686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6bca34f3f33f06bc3417cd5630e1b86796d2be31c9f4038abac7b630b018c4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1012500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9a0b4dab04d4d55bcc78157378456f3bb65fd422a38c2eedb32fd936a879b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL1012500688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb16cfb94a3989eb561f66ea8290e6fac5b3f6b905a234efe83d261a0041b42. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/IL1012501193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d13701537abc3c03979b5925b4c69d03e4c5767baed10379dec9a608d869779. 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/IL1012201005.
מותק של פסטיבל 3 - הרפתקה ביער הקסום (2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9495e3fe38cddc10cca3c4df0e474a6cc964e0d4d3f41ee31ffa8ad60d8a6ad. 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/IL1011900679.
מותק של פסטיבל 1 - הגדולים של הקטנים (2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d105511b04d4f87e1891619e2747841b77e0c6320b23191497723c6f402458. 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/IL1011900626.