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 0x8720ef5183ab2a5a25de621b84189d3e96b9f699c99506c9433e5fcee2195a52. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9626d35b-d3b2-4db2-84ad-4e8c292826e4.json and https://artists.proofprofile.net/proofs/artist/9626d35b-d3b2-4db2-84ad-4e8c292826e4.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 0x20b6a88496764bc6102782d7d2979117ce131f53b705ae80d41a803d92f372fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G1644887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ebfc1391052bc82e009ce99a70624695e587c6586e08ad6f9e0b3c8290ab8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ES71G1644893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9556a093e6ca3bef05a047d381f7ace315ce09fe5e6291459a018e4ab6848f68. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G1644895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83466bb4c4656566b277772f558e8c95b57545f23fc2918bef7dc47b84149dbe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES71G1644896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ede8563a2627e0d7300bbfc5dcab3995026c81c7e17fb271dfde82f6b57c843. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES71G1644898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdad2ca94b8f00a7c1a3f7db9369b8e0722e3096b763769efdc3d7cc828769f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:39:30Z), 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/ES71G1644897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092e935c27e51cce455838c80c6cf0020b757704cdad954b9ad4ac8e3d8200ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES09S1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3047b98847a3a4abc70994e17867aaf5e851a7e11a18af847bd0ff16dcf518b4. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES09S1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d5ecc84d48bde7a48b05f4e5ba04b333383032806cccd077caf853e82a2cbb. 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/ES09S2100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3462bb7f9ca214377545c9936d15d64c2a3697889df95dd2339ceb6114cd515c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/ES09S2100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98615938cc88e81897a0e80be2d5c7e0bb82ec71d8a0a4662fb2588672cd9b74. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES09S2100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4802de9d7e4c8060779a76097a18b7a94684b053d7ff16f73e0f01c02d3cc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:43Z), 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/ES09S2100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded6dceef76e228fe4efdc635db7e63a88c182cec4fd8e62f48a6eb14afd05e9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES09S2100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7305ccc2a13bed14cb6fbfdcca1fb7cec399cf7c825338f11d85e54961dadae1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES09S2100288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8faac7e4808641e338beb1d299f2be38f8489267f92c08ac38784118a96d373. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES09S2100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca56b1293c3916b133d6ad9f23b3ec4232caca333a6e83f6315efd6afd2195c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES09S2100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe2134e637ed5198ddaa5914a5789de1d4f1ff30754b89aa50077584070dda0. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ES09S2100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b071250a250e7b6f57c746a83f9ec107160270860a85cb0406245ac3b2d6ba. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES09S2100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d5ae4581a7796501d1f5efd8fef101d614bd2c09d5fa21840c3a8c1f3f8dbb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES09S2100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd0487828196adf21de5917f3cff1216e4cd6481cf2eafaf42dead007d6c744. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA72283959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7181e78b6a5d660fceabea6c176b4fd0c503ec1f3b1bc9403269ac5c8f0064c9. 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/QM6P42458507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dcd1ab0fd4d4d7ffbf278b8b439c76a908ef6a2c47759c636ee2421d81a2fa. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMBZ92474828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd812b85819ca5173c9c0e86767973c6d844331ea05c6f01e83e2e06e9ae9aaef. 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/QMDA62400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd90dadc5a8c42867d212041e72d86a623f6fca1a5d1b69feeb54d909193ffa. 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/QM6MZ2489062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb448df81439e96ea8787c9a404135f0f46a11100547a75e59fdfb2e6ed12a7. 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/QMDA62400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd40496790c0fcc588a5f2ae8dc33cdf41160a025b838de58c827c8b73bc09c. 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/QMDA62400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cc9bdb0a2330c0ada27d1bc79c8363f9caf48a385dd337ee6bf4a645e2a206. 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/QMDA62400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd0140a687f878d2a568aeb385a4a6938c2edd2fdbc7b727893efa89b597b7. 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/QMDA62400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc58ed1b11060ea47adb7f4b3e4b17011290ce7e90cec0a4f9f978bc8badbcfe. 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/QMDA62400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe32b770035e46df03242ecde6fa9e92955e504d2974b93b7c4cbe57587abebb. 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/QMDA62400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480855263af80e4faf5e7f92da34e895aa1f5c4ba55a14ed50c9cf127d931038. 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/QMDA62400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf552212e7705b23410c392b520d9a06a3bb74e91155939429b0bfb9f429217a. 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/QMDA62400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa645097376dc88392dc03b51fca9d39893b75f48e93138097c3534b98297a7. 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/QMDA62400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4186e24f8ef662f4f3a6aa298904698037abfcb757acf2b64ae2b6b36b0695e2. 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/QMDA62400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dcd1ab0fd4d4d7ffbf278b8b439c76a908ef6a2c47759c636ee2421d81a2fa. 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/QMBZ92474828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7181e78b6a5d660fceabea6c176b4fd0c503ec1f3b1bc9403269ac5c8f0064c9. 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/QM6P42458507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa870046fcc7fda6659079562d06242077ae59bce38212105242b9b7e4ec74. 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/QMDA62400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dddc2a1953647361a7b94c352bdc08722938b2e7b4e2fff8bcb4e3dbf6e284. 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/QMDA62400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e4d99757e1d08997f820148950a889b509ac98a2020947e1bb7d54df39a10. 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/QMDA62400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d0efb57931cb17fa8f7f21ff1735f6cb7d236d56764c926da05d019666bfcd. 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/QMDA62400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9d50a9c4ef3ea99af3d691d0d8be0a21ae2953679777bcabcfac89fac1e36. 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/QM4TX2546262.