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 0xdbca4b3cd36fcf78090ed853e2c65121224d3c0722706916e1e01f63fc294da4. 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/320783d7-24cd-498a-af76-76bbab72afaa.json and https://artists.proofprofile.net/proofs/artist/320783d7-24cd-498a-af76-76bbab72afaa.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 0xae69fcc781d0cde597e1339fc1e4479b0f0748ad666eff2250e7294efbec284e. 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/FR2X41979525.
מי מחפש אותי (Sharon Yosefov Official Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe259384b2f841f0feadcf9d8e4305d43837246a53968a55267a5289a10ff95b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL4641900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf5476793e4f44967e186382a454305e6240e59b3850677e09f7fef1eeec3b9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR59R1992869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3a7136915a75b96f3d8b3c2173efc3a4fcf7cd55aca697702ae2460a614ff1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX452083217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0544602df614cf1d9916d88b39f0f886382c8227e22363246ae7f06e38a67. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR59R2027044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853326d2d428745f236af1b079bf29c56b6a77a3b7716f456837462d6c0f14a1. 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/FRX202018824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6ccccae71d64263e92f50f3ae872b8739e7b1336af860aedf4f28d56b9a1aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX202018825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a263f6124fd32732bf7ad6c6092feb06f2806674c5c00b267885378a69842c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRS182008771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea3c0bc2e89b46ac2afd1839423af166d5866616f6b0eb4147a94f085ea432. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/IL7192000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91b3def00355a0e96d50d8bc850cc2f00d5f7fc5018ea76aefedca4271fba4f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:17Z), 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/IL4642100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5833049f41d2fed7b6c8d4c68e2ae591110b920075b419cfebf7188556910b3. 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/IL4642200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61918ee03d611ace4af722cdd1c47633b5bfed54e568b14b841949cf1bd828. 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/IL4642200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61976b564458dd024e6c634ba1c35e96370b75fd9892f0a9af595f8db0ba0f4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL1012200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994a416fe62e8a2ec642d683e1c033d268fcd38a6c0bc683f0cd985cf417dd34. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:43Z), 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/IL4642200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a3191320b264fffe1ed30df57434c9ba4d6ca38bbb384055c919b85f47f456. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:58Z), 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/IL1012201721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16718d1f1e1b1067618884e96a0cfcbbb79cda33170fe822eb53ec5582cf7fe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL4642300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba14b33f3884065654b00afe8a87772d5f6b982c720cd027f3d060ce4fa9e94. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IL6432200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aec841295baadb1f9a43dd42ed0228a0115e27904d936787b8d6df6f4c6a17. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL1012301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57823abb504dbddee91167327c3033da3c30640e3fe06bb728e9a0e449e8f28d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/IL1012400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b928d9f13f3b95f3a674de358b43ef8499403618039f3f046ade04b1e197e62. 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/IL1042006409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3224b25ab97befdf6ef4405d6ee3edde8bd511718fd67c61502e1bc8b77130c. 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/IL7532413278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128019d7fd7d38c5a226e6ef144938de64c0a005f62b3ae49afabc6078498bf. 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/IL4642100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af4ed1dcd5eefa03c05ff56960a1e63e8e2c3ad7a4e916b9c41f3ec3bd7f61e. 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/IL2022309004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba14b33f3884065654b00afe8a87772d5f6b982c720cd027f3d060ce4fa9e94. 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/IL6432200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1cc5c0eac219b597fca84bf63b0a9e3158148977a90c6294ca9dcd8cf2b9f. 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/IL1012402244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6cc75bc0f544bd9f949289f182f32c5974fdb5d81a6f4020622f3a6ba01f96. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/IL6432200740.
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