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 0xaea96639c17f8a4d01be2f7ef9c1f69d67899c1fe7b215ac945d0ecf30aa40ce. 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/8909400f-d2d6-49fb-b321-76c499795c54.json and https://artists.proofprofile.net/proofs/artist/8909400f-d2d6-49fb-b321-76c499795c54.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 0x83b5000bdda90dbe671653c1fb7d7df4c4c41a6b9de0b035255d2ed94bf3f728. 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/IL1042101021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdee4f4d996911e981acfa46e53fb7f554ab7c3cacd1605e501cbf93350b0a68. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL1042101022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5198ee0e7f41e0809aaab9d7f45779f52ad4efe5f9f46c5a7d7beaf6919c6799. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL1042101023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462906076bdb3f3744001853786a8056340943ac755c9c21cee4e0f72a73b9a. 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/IL1042101024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582a33e525cc53cc19492cb8c731ca43af485368c979e3199185457d49d87573. 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/IL1042101025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cca862a10597e6bda3607a7778d2a960c72368cbd758e25aa00caba1e61d56d. 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/IL1042101027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1be8c18e7dd6917bc4cdf92429154578dae870fb34155a660864dc8b73d10f. 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/IL1042101028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce16cca4affcd76d04b76efaccef88e5b5d2bec92fe53d6de007169f8a5767. 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/IL1042101029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046a05c6817b801bd437e195513e8ace5e3dfd7405cd311c66f2aefdfb6b6f8. 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/IL1042101031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4197af8a01e114155b931bb6a8de36fc7ad7edaa5648856f73d3931e7f7326ac. 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/IL1042101033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930d28a00ed8cb865d4289247ac016959a68c1fda36d40adb41124d101fc72a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:53:01Z), 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/IL1042101026.
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 0x7555978493708bd9865b1e8e6ce46e36e5293b21914354fb5cc434410cad17b5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/IL1042101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5d62aec1ed9130e59249bbb737fb0af26862da633975e426ed50cc1742c927. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/IL1042101032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e004b18c1f60e784a51ae8e087eccb6e15332979c590d57b530c45e08ee4179. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM81252310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0416e3a1f1685c6671b020c20e391b3854e3f3b6c8780dcc509601acba15a49. 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/USHM81252312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee630176e0c4032aded7c1a228d6914796dfd7a9a153557536d82562d1dac9f5. 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/USHM81252314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22854f1d00eb318a0daae5afd1148ab3915144ad1dc5023f9c647829386f0753. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:03Z), 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/USHM81252311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efdab901f57ace4b83a1a025cef76d63923956fb43211666343a31436318b93. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USHM81252313.
Niggun L'shabbos V'yom Tov II (Meditating)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd256f64ba40846a4954d1d1873afb4689228ee98330f3ed324fb0d3c45b5cabe. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USHM81252315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec71966c7692da3813d559d795f184ace49166f1cf228becde311fe8f3167bd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM81252316.