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 0xa26807fdec0736d613628b2929e8d3318c53c798ba78279d517a23f1fcf515ac. 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/00b472f6-14c3-4366-bb5b-3c1ad0e7fbdf.json and https://artists.proofprofile.net/proofs/artist/00b472f6-14c3-4366-bb5b-3c1ad0e7fbdf.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 0x04782ee5ca088eb7fdc7b4a11916f3b1f66991e8f9bc14215beb00a402c1dfee. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USBMS1050077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa718a79139b041a19c97112b274cce08cad91b881cb5f6de054c960e67ac69. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:47Z), 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/USBMS1050082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbac4730ff5a2321c8e38d776807392be567a7818977d9e2d2b7f1138bd534f3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USBMS1050126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb095d06ed4b373942432a88a559144d382abdeb640d9e33db9c48ee6f8e74620. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USBMS1050128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5b5fe8fb976f6537610f5c9f0c95c69a3f96b705da012d7dc90f1b5ad37c92. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USBMS1050130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95044c3b4071220e8e92bfe6a4ae8d9fef62a612303c7e8f1efc15583a30672. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USBMS1050132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f686a75c8e635be15c5176b9655d56cc3ced9849ffbcdf5a564cd59ae6119. 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/USBMS1050134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2e30ccd51e2bb4ef75535184cd0effa73dec30651e612bb92a72b2d475df8a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USBMS1050095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b620aaa627d3dc4586856440ae1ccfdf930930fe3a38ba14e61ca43d767c1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USBMS1050096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62640a3379ef2a6ea847c94cfb77c55449845cf10a82ac6a37711c53954c1c1c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USBMS1250032.
Cantor Urbano (Homenaje a Luis "Terror" Dias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6f65da4784f6dd58eddd9afdd3f5f8139f8291cb19124002b0793a156ad103. 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/USBMS1400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7971d5ae729c1f54c70448d0575c4d727b9e2728cdf798d135f17e5b56cf4028. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/USBMS1500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04b099f0310fc3a164ba35423dd8f1191263cbbdec428ee3576f1c8fa33a01. 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/USBMS1500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6f4ddaf9789e3d0776877eda93826c82423bf9c2e92e09b988bcc8201361d5. 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/USBMS1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45b6c6f9cd3a88cc47d2f81710fbe2858dfd9ef453cdce8e614caa49acaa8d0. 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/USBMS1800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2199ea47d92f2bd66f13b7f8ec01f072b7e234c851494f7438275ad0c150230. 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/USBMS1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65598400a2a87b6ff10296479b7f0784da5d618eb256761ab00899218582c21c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USBMS2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdbac40e68137d43532d04595243daad67caf54bd67d46d74ea6950d10f37fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBMS2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3519c2127896b1c8dc5b1886591ae48e9192dcb56b7ee52f4aa9e1e526a0a764. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USBMS2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40c11bee1ced066f904c356f982e15f63383296d578c0ea2e0a29f5b6b1f5d7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:06Z), 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/USBMS2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65afade74a39a03b4b4b5d4766bd393dfbba4b116290e3ae0a6885cf8cc800bb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM4TX2377816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463f357c09e2821156a4a22b79a8cd0c168c3502d936a62df58638400624593f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ2486683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96fd32b2f26ba4a135580d4d0fdb0de31a3bbd2eec9875728f2dbeeb3bf2435. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QM6N22422577.
Pavel Sinfónico: En Vivo Desde El Teatro Nacional de Santo Domingo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741cf9b1405bea66eeaf74e1e588dacf5fa1f4c545c4aceb73462b88024660b5. 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/QM6MZ2500112.
Canción de Cuna Para Mi Abuela (Pavel a Marel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49de398f15e4b6d07a48cd8eb5654292ca7e843d4775be9c6cdb4c61698e2625. 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/USA2P2328589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5da2d73a2a03ef9966c1ca26057e21cb9722c80c520c6043d31abc8a3555b3. 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/QMBZ92387872.