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 0xb0fd36184b99428f885cd5a292a2d17a2b4a1d057162ba04216843942139753d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef756417-814c-4324-b662-1f7ed38a3d31.json and https://artists.proofprofile.net/proofs/artist/ef756417-814c-4324-b662-1f7ed38a3d31.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 0xc005b8e5866bdd6e29ff0121d2a5ed81a988e0bdc22f1e829d9c411c80f41bdc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA51802882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee77c3155af9a4552c7eaf3c29b3f04a73496ec6dad8a6a21a3da2fec67a4fc. 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/QZDA51802883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594feff85af0179ef133188cde4bb6752fdc074813e59bee7b504ff83f342b84. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA51802885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58954b75c055962678f465bdf281aa9ea28573ca69b6ed29cbbb9de3192e1625. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA51802886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e55737265eb5f577283e7be26079ccbbde8739c283af9ddae2c319d63a55f8b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA51802890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a645c7b5aca2c0ee959c3fa8a3f02041fadfb3a8d1c259bbbdbe1427d2ab3c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZ9Y21712079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f07663ab68e9b5ac50d4ad44223a847b04a50dd43fd682f66060f3a2bd5d2. 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/QZB4J1867991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd322a9ff2e8240ad459d7d4f0860ae94af2aa1bc010225408a6185a53aa6978. 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/QM6DC1900767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4dd37bcd081e1836f38856cf45afc0ae0b6684c2420405fe021681bd83a889. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QM6DC1900771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23cc8e6508016e003b2429e1708f54a79132b12060b1c9f9b4fa268a52a4c69. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:34:59Z), 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/QM6DC1900774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ed33dfaca464c7623ef6c89d38709732948a68ae5a0e5866f9da76e2aa6e4a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6DC1900775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd189340279b0d1c6e2af69a024c138bdb0c68c98bbf955fa90099e8f44e31. 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/QM6DC1900777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd16380f209d54e13345bee001d2562c6ac192f11dfa0aa2deaaf04993ed7ce. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QM6DC2072624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb31194b8960df1e8e19764daa2f85dcf00b52c8a054a9c7cd7fb0a7896c9ad. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNFJ2101526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a038b2481bdb65d4f93377df748a3a846962fff5c0cbb5ec117f20bf38ba34a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNFJ2101527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6255e619464b3800148032df688193183363e005f1866514ea6036090fc38c5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNFJ2101528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6065e3520c044bc313f5f25e0e0d0ee8577e9d0c9eb8e9099254c0d959337b16. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:52Z), 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/QZNFJ2202652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2215dbbb8f8279b223c73009386aa084628cace9f0347fb18d80b16e01c81f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNFJ2202653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129efecdbcb93d79587a75a6d1dad3de1e40a9eddaef54d3b9c54fae85ccff6d. 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/QZNFJ2202654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fc396a68e658bfda3b5bb1872741b80bdc197f61332c48973f1b89b32e2dd2. 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/QZNFJ2202656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba79eb90e907e59c82b316b900f7e73713a3117be8b60954e9c807c523b321. 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/QM6P42301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205fc745632b8d6497c339fc5039f9f71be4783e699f3660623e6fd3de45b9f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QM7282330665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ec3b43f634eda59170be91868c951e2227799e6a8ecce5cd6b060b677c467c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:22Z), 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/QM7282330706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205fc745632b8d6497c339fc5039f9f71be4783e699f3660623e6fd3de45b9f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM7282330665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd4217c0907ed198a4fd0449625fe27e60308444c949168f1c34eec27b3f73. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:01Z), 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/QM7282330709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee97ec22d1db50912b20f246be0f2c4e1fcf824e9592ec1dc126048c597e0ebf. 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/QM7282330710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda62386454883d9b69a0ac03bbdedac2964934b0db1bf647150f78cc33f66624. 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/QM7282330711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c818641c6e4fd81b92df53d9111e820817586dd14c068c181e46d8597bef34. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFT2490730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe924822f93906052931a0938eae758c005df3bc16fb57cc51eb53b4b66a7f38. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAZ2527543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555268608aae75c3039ae02b9195660abe89b534c848f86317271ab93fa5f1e5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAZ2531412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c818641c6e4fd81b92df53d9111e820817586dd14c068c181e46d8597bef34. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFT2490730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50084583dbe78068cc497fef52131023bf67dce1a33e92424a3a1efeb74d7c5b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:43Z), 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/QZMEN2582648.