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 0x5b5c1b21f330dd4832b57a4b98872f387c421256c6089d3cbc853d49ba5ca33e. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0404ae8-d7ae-409b-8f86-a424e8d4aa8d.json and https://artists.proofprofile.net/proofs/artist/b0404ae8-d7ae-409b-8f86-a424e8d4aa8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
אחד לנשמה / אחד למסיבה - הופעה חיה בקיסריה (Live)
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 0x571d1f261c029d6c6bb179f19c33e9ddb160a44d8737d26d03bbb4bebbd7f8cf. 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/IL4431300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e30f66ac7fab932dcf84713fc553b5beb54436180f567dd4509f38dcbcb1c04. 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/IL4431300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897097638b1ac061ab58f7d1aba8d03787e32bbd695b643c814281b1bbddd768. 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/IL4431300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d00752ebe58eed10e9b7376e1d5d9b6447e802789eeb5f69b64e0e0f92d50. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IL4431300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9833a15cc5852133d81d5a09ce0c3b7006bc0691b6055b6662b9536969f0394a. 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/IL4431300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4755546e55e69e54a0d1be47d7dd5954806e6c65d24e5d823fda28ef081bff8f. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/IL4431300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a0fbf76b899b8b95c9e26547ca83bf733de265d9908c4a14808d40e286fa5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/IL4431300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c02b76c14c1c6296f0fa0ba0dc751f5c56b633c6369a469f8b8dfa225ba90d3. 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/IL4431300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a244a4b61e7ec39e069f9fb9aeb289bb9ba91bcfd9fe24138d7fcbbfdf0f339. 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/IL4431300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad6669b8e477180942a5fe86b265ee4762e0571bca2112030c06027fddab10. 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/IL4431300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937cf06fb316e869a4617400cc5f032f486efe3b266564a321cc763a22dc55dd. 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/IL4431300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d922152bf61027c6c19a437d214eb725f49fd90bd6f606a6a70f0700e1c96b. 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/IL4431300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725c53d7fe72bfe6a34c3dd7fa82d381c94ab734a7075d63ac7d69f7614de1ab. 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/IL4431300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cbaf50e73409d5dac85dc0ff5d86d4ecfbcf00ca000b15e2eb5b43c27f7bb4. 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/IL4432001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24d9e657973e945d22cc601f6696632e692588680160e6e9880ec2e23d21bd3. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/IL7532213303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235f45a6a024c405d8dd8a52b733be5b678750ae2f0c8bcb1d25458053f56e21. 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/FR59R1681099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b383b970aae0cf9f649201daf7015385f7e6bfce23b49b2512e45ce97da04c. 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/IL4431000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac50fef0999859aeb3e2556ba6f566d03dc9c5021ad3473e67a0358f1b93c60. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/IL4431000161.