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 0x90891decbf2d83c26246bf0f3f5744a93f3ff389ff92360cfce825d93f59b378. 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/e8e827f0-d96d-4969-a0f9-6c183372ece7.json and https://artists.proofprofile.net/proofs/artist/e8e827f0-d96d-4969-a0f9-6c183372ece7.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 0xb49d5524550fd94de1a1d3229acd5c09f54334c25e1279439eb9da3f31b8db96. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NOXYO2004070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1db5d6a8bec4e9e898027ed6c46d992eab5f7f1890ebdd6984b0b761f4b13c. 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/QZLBC2200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dfa396ae4c87a80fe3ebe82b6d20f3b1bc4a35430d5a44ee453848866f0302. 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/QZLBC2200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246e5fdcb3f49ded560bde3deba82b3e94c50d19e67bfa835ef8ed5b69172e65. 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/QZLBC2200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf44c3197e7aa7d0e0d4662c2c70aae6232ae943fdb77c68ea4a541493335cb. 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/QZLBC2200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a73ac45ad9f77be0e37ed281b6d5069472d62b57cd6bfe818dcc4ea6232894. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:19:00Z), 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/QZLBC2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50815a00491ba791477c96d1b35bce89629b8ecbb047786f9ed99bdf09111a4b. 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/QZLBC2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cadd24e4ef35b0791349e61743f74869a3ea3a38bc95c17e6d64410d00df61. 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/QZLBC2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786bbfd645f4c94431f81036407ba1fb0ed47920db0ea338cf20856cea2d9d45. 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/QZLBC2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36012a16a1654bb38d46c8f989c0073ddacc16c14a67b053bd5629794201aec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:10:00Z), 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/QZLBC2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd1945cba88a88d3c89aed80923c0c040406dc435ed5e53602f3e004e7ead08. 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/TCAEK1931410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe043d9c5ee8a905cab6692baf683ca07eb437a3ffd454182c40020bfdbf5bf1c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA062031287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a3c9cfd3de93d473fab4eb42696dca89d2161a43408057eaf5551763d15371. 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/DGA072184034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c16a9cb702fbd893326d7fbef2c315bc110b89b256a7acbedcaf6aeef5254. 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/DGA072184035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2923c13147942608ec5a9ec4abe7c6026a4d8634c0b53c1035522210c71419. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6N2226499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7dd65e7ae3f22587f09c710e0caf999abd71c19ffbb30cc1be1ddf01eee38. 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/QZLBC2424342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8123f587143e161841fc4fce728302eb139c6d564b13c6a5eb102797eed5794. 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/QZLBC2424343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056330ad49c182549b7922445b456e1bb7420e5140750657f824363753af38c1. 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/USGC61600542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de14af6b3b64c0153ea89e0b23a2058ec4b4c5603b66fdaf88093f03067ee6f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZK6N1983502.
Nick & Astro's Instrumentals, Remixes & B-Sides
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58914ababbd1fec60e92d2d95786e921e4d433498fe306e4db4d0d1cc5ea8a9. 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/USGC61600790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69001a30cfd1c80034d33054476ebbcf9087adec485a040f13e38820acdfe8e9. 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/USGC61600793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09558fc0a541ab15bfe5c1e9107688153dfe3d906bee0a1158c70607fcc55e3e. 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/USGC61600830.