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 0x7b7780db0d9594b73d169cbbde712139e24e0df40093c489ceff0cc34a607d6f. 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/41828a8f-cacd-4297-8f85-fe23a6fecfff.json and https://artists.proofprofile.net/proofs/artist/41828a8f-cacd-4297-8f85-fe23a6fecfff.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 0x5b84286ff606841bdfd00b36df6fd083999aca330c3803b803f89c43c6a7afd2. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/UYM121805204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c371bc286d7640b5cc48585810f455cd802f308cfa573813e7178855a28544. 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/UYM122105026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfb5ab047868090e6d17f476f8c0ecae200d6a0cc6157b6888ae9dbc37e622a. 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/ARF862400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2781e7f58019e880408f1a992d57439361945095bdbc17f1d5008c5474e4fe08. 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/ARF862300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87a65834fdbcce99557901c0fcaadc99c1cde63a713ec7264cfce130eb9a88. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF862300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7768980e659709fd7a9af3854ca7f090a1cc631282b7411ac69876034e59ff8. 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/ARF862100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc977366a1301565b3e502d8d5a18e50e63ec2949df975d9a1cdba3338e36d73e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH2068392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd3287ef8f50c4b1a108886011988d5740f8afd5d25ef2d709a594f337146d. 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/USHM91954366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb40532bc1e6e9bed48f5b2d456dc4f82e9c50fa395ff06b3cbfbd997b026aeb. 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/USCGH1924252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0c69f25083ac455f4699444f10e8cdf9c5668d2392603903140d53dcb4ca2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USCGH1853182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d42e1eaa67e8de901483a0aa7d35c42ad646681bef427af6662288569f42711. 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/USL4Q1777679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8302145752f886f0b9b15ea6d09dca494c5aced516ab04728deb11b0b8a5a2d0. 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/USHM91775117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a33de98d011a0ab7ff7717bfb50c86588c4e651249f211c57ccdb3d80ba82e. 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/USDY41777021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02b45c6caa1fc6009729f4ec7e73926e610c17d85df8472237476798caae922. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDY41736809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc8cc4329b1362def1b0c0de68d65a2e97add954fa444ca4c2c6ad3aef3557. 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/USHM81698156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447214cd63ae8e33980b375d87826ecfe1fba31bc4691554a869dc1a77e65a6b. 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/USCGH1632135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcc3cd626ec4c2d46db02dc162709b35f4e8c984a08482c67b39cd00ae6adcd. 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/USHM21524340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87a65834fdbcce99557901c0fcaadc99c1cde63a713ec7264cfce130eb9a88. 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/ARF862300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95708a4ce9f4e8c39a87ae66b701e71d18e1cf9e373e92c28e06810e0384523e. 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/ARF862300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6d78fa229f7ce9aa73a82fc5c6c734f493686e2ea3356fa4b0e9507fd4e142. 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/ARF862300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c704a45cd1a1434a3ad47e97e4195507b80209b02dc3d4394458ad63bacd855. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF862200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fb3722dacd2c900a31aefbc10806b7419c96dc73011b8019365bf3befaf53b. 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/ARF862300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc3d05b16440ece771a77a41e17d8f1720f216766971633f6ba4cf9885012b4. 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/ARF862300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf446ae27bf5d7503b3505099b761b365786ff73f07be4a3acb9adac0a47dc09. 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/SEYOK1776810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7674787d1cf29c79ebccc024245628863a03da3552439208d124644460d171ab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF101800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f299f511001bf04cde111d4af40b83aa87b90ef7ca895acfb6e3458720c616. 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/ARF862400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aaf99e202229db381ff01ef17df7a94d495c19ea802ffe3b8a6c54eee29605. 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/ARF862400148.