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 0x1e4e698a50b04b8763b62cd37d994ea65e4526ca744bfb7707b9c819cef7148e. 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/b43993e7-3f92-4257-bedf-79e10f6514f4.json and https://artists.proofprofile.net/proofs/artist/b43993e7-3f92-4257-bedf-79e10f6514f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keep Talking (with Zemyu & Aaron Pfeiffer)
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 0x48994f2fd0d66b391a904ed2af3aefdb472afdd222aa9cd8707a281f915373de. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR9W12124535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167dbcbce00be2f585e2c953f3991233a019bcb4cf36d85e57f2a410a3eab55. 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/DEML72400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38d21357f9b2337ba9bd5d550b5970b1fef629c3b8279dcef01d0462f63d35a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEML72200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f852ed416a3d2ebc223384a59d42fc79f60e3f0fb97fbd20844c599a6c682b. 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/DEML72200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e174d627e9583ec1467667bfe27a5fdb2d906cb838ada22d0016ffeece853a6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEML72200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a07fdc7a5ed8bc4077236c872f979d66eedf11af604c650641dfa1b7e054a2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEML72000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd3bdc69aa9bdb15a6a0e73411dfb71b395162539c26f708511a417faf3815. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEML71900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca328946aae50004e9b8411ddb30f02ba7a2a1d70c2212c00f6e453f843ee95. 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/FR10S2529237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3172f1e850864bfd69eed58f0ba831ac26a5ebf857d46f14b9f4408897b504. 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/FR10S2506078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e87820824f5b274fe35ee1b34bf19509f47587d8f21b70d4af811503bc2ce. 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/FR10S2506079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f26a4b0ec686ff4cb52b6f0c1954db0a8c0fb76fb6f84cceb463e1d6969fb3. 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/DGA0S2427047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f45360e29c11046cbc3d7f181f85f24d65665b359c467b4d91752ab431befd. 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/DEML72400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552dcd0ccacf1bf557ee85a8c5664f01efd1409e615ca448cb68f887c675f8c1. 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/DEH742437167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cb11cbc5999c7ca51628c409428da026c5752ac31de736c41a6da3f1e5c854. 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/DGA0P2498832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b6a964bc47048b0347514e5f20b8aa28178095c684b93c90de7716f7b716ed. 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/DGA0P2498833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc5c210f3594b3334007cf3aa72aba4ad18b95156910bc6983e9c5ecdc600d2. 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/DEML72400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18ce1c4b17f3660d1568eaa0167ee444d455dabfef69549efd7041c0979d2a2. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEML72400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb023002a828c3ea241fe99e084797a34104a912a79c644b6c33eece8e2d9686e. 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/DGA052451637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d758c15d4451915b08414105b30617a62a47796c9da0bd1fa5f999d8d7056a9. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DGA052451638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf296d86a487751f90cce0eebc225ccec92d702c2a63d5b1a68229550f86ba754. 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/DEH742415841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ebdd0a85caea2707689af563cfa185b8eca601695b88d3d2dd7bbf5ec45829. 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/DEH742410139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9abd2afef33240b5800e10d4808e94c309e4d68ab96aa3159828c582d6ca6fe. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEH742410140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd337bc8684da067d4993546be35d092c60e514f785f49c9678616a2cf86eb. 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/DEML72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6677aab3d53275282bee3d2350102ff57a00f9e6c7a3eca0ef032db8fda127a7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEML72400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bc03603e2f33807b3d0d4f9b5f9fbde86db3d0d626ddb50fda4e2b71b1decf. 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/DEH742333418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8263c03e28518b8619c3a1c0885e783eb9beffa64489ef826e596769be11e. 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/DEH742329973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd014c46386ac0e2ccbf31148ea1209823ac67693c78dd92103cc19993100ebb3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH742329974.
Dance in the Middle (Martin Eigenberg Remix)
Dance in the Middle - Martin Eigenberg Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb62480ae9c7c42aa8604df919519e66ee926270c8c2be1d69b764a79c77c43. 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/DEML72300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd986a9273adf34fa0b6605e548d8da969a685e9f044b1d11f5c84d1c597701a9. 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/DEML72300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161f1099b38fcfa4bf8e4950c63b2c4fd7dcdfef64c38cb59766d7eba33a9867. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA082331965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7509cd8d2b956f67d80e6f094918002e00439dcd66462b15fdb41c829cd792a4. 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/DGA082331966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca63b3532da8a5cd515fc8e0506bd032f4aec9ea632fa282e73f43678e6ba1d. 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/DGA062374349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5f14da3f1b96cad790fea40045f6d6b30170b9904403700bca8d2a37b21219. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEML72100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b135382fb784ff1535358bf22f1bb17857b9f2c86f020721667afa4fc0fbd93. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEML72100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dd29ea494a7a9be59874d930505da7f8a86274b497abe208a3d6f2803ee949. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEML72000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d55d91b3c7fa065b18573d8064670c44622c5195d65738f91bdb20a341dc8d. 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/DEML72000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a07fdc7a5ed8bc4077236c872f979d66eedf11af604c650641dfa1b7e054a2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEML72000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f60a9c49b0cffcdafd3e1e0808914792aa90c1f420b40a5f9b6377be8fe542a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEML71900132.