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 0x7fac02ea6d39f25d7e40089147a77b1dd8ff7c9251e7f2356afa29f12ba4e983. 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/42b73ae2-ea76-4172-b8af-32095b0a212f.json and https://artists.proofprofile.net/proofs/artist/42b73ae2-ea76-4172-b8af-32095b0a212f.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 0x3a1d553b081baa7a9668bcaae8d8f3217417e120836327a5a2899021d4298d0b. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QMFMG1579900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c73f3304a0c433661ae0b8aa1cdac7fee952d243e38a6bbf48444fddbb3dc8. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QMFMG1579901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618eec50b28b32f06e7a827e537f884a39d0911efea73d074850c8a7c819f39. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QM4TX1818619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69862d077b4ccadb2ddad30784171e084639fff5184b2e6081fe4f83ab163801. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TW2341472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e6295c1f50ad7292befe602605b86a283f76d6b4b9da13cabac7d667579ce. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QM4TW2341493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78f2287036fae74ee9308e6b317c23b1294cf90b5541fc258d912a3dbc90e8e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM4TW2341501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e6d813e861d77430e9f39226e48b724ade61ce57f26ee91121f8f73155dd10. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM4TW2341505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5aeae106294a58f2f13452ec2d6eb1db0f4101ad67435bf11cefadb32f307. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW2341511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd29da76060beeeec37a8cf6d91d033ebf0dcbbb01d4af9f3886061a8f422c92. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QM4TW2341579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1c5b04d2e63dec7a2de8a49527cff2f6b348d40d204d4379f1f68c0c55ab14. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QM4TW2341518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f67c5550d86a2ac26276148dff713f294ef94f586d4062b7ffb7e4e228e1ee. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZN882444694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6be28c1bd9fa20e2ab5ea28e28f45c92e81189b22418126abe12a5145860df. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZN882444696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf304dcde6b6e28f67978a609052a7fd7cc518eb4d480e2009f96b5f76851ec6a. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZN882444697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffac7d5bbbfb11ed174d1ebb697bfc54bfddea37deb043b254ad1e2bc93d91. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZN882444698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd350bba7a897ac1f9a507ace1d27db01e5a9592f559a2d49097f5c9819d08f5. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZN882444699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0078321f01eb783f0afbf7086e6ba3fcc0e728b8e04dc493b25dffa4bc830771. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZN882444700.
Halleluhu - Psalm 150 - Live in Tel Aviv
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9fe044982f2f8d5709923a3f1f258f8e8ca900989efd1f7595529e39da2363. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZN882444702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f98f5758024d51a78d7baade35d8dcc3ef03d4bf0d8537d31289dfb7cf1d6bd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZN882444703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5739ea111c94eda6c793dbeed0d194353c9acfd058f6d68a96df826d4b1519. 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/QZN882444704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965870f9d0c34968271d58185f0e3c2d2215fc4cbaa3e9b9503fb0bee736d925. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZN882444705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe8e8de53d704e5a179189946db926f4a4920c6db991d06b318f1c414ad5a3. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZN882444706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36939f8c07a0eaa020c8e76adcb167be4d44da0e3891c94522f98cb5b5191ceb. 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/QZN882444707.