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 0xecc7dddd6db70051f3e0f99f704680b34fe07f2a970e90303afce4c7c7d3957d. 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/26ce3369-caec-4a01-b9f3-6b30cd3fab43.json and https://artists.proofprofile.net/proofs/artist/26ce3369-caec-4a01-b9f3-6b30cd3fab43.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 0x01a3548bc89263c43707d193d76cf3dbe98259cce3d83efd83f5107f047d2400. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR96X1914778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6610bf23abeed9482cffff933a1d97819284b3129ee9490e5c03c72dbcf291. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR96X1933768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dcdaa2dffe7f9e214a35d6719aff291677c308ea90b8b25c88563d90e816c3. 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/FR96X1933769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915b4a1be3a6aa268b3918a7217244b5ede69ebe0299f3d56ebe2c6fdc14a4e. 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/FR96X1933770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e560ab4526351fb95616fe17cb433cc95495b1f4f76f39d3fe5f170cea4afd. 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/FR96X1933771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a2407afb375dff8e4cbc38c6a2105f6dba68ad91dee56be22cdee137039df. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FR96X1933772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ccb7c4f9324defac870f54d73a9b4b533dcc56912e190a6e4e4683898eb865. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:41Z), 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/FRX202099736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd4f45c917dd2515c6472af09eced7be48c032a49a2d5f5f01070f0c86589e0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX202099737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7895a82942d53f3691ac4b15e34f0280d958ac97897801233054d886343670fb. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX202099150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9704350ffd035e4666a7f40695959ab81800a8d7c00740054e7ca61b6611ce. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX202099151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2797d9248f3a53d2c4e2f52ac8bd1d2a8be027c13db738d0a4046475e1cff2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX282032767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eaf24e514bf979a1a4e19fdf197fc3e12ae583745603211690b9360bb2acf6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282035931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44b9e1e14c9c7b5e9386e102610bf262527a976fc9a9441cd2d792d8adb2c57. 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/FRX282028720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bafc52f4d80f8b42559395a69f65cfaa07fb1af0107ff6b09a4500ecbf37f9e. 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/FRX282028721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac5c1e65c084c702ce9c4daafabfeed7084979bcc4786d69a18809a914e8c95. 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/FRX202093440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38138fc350ecf2b4d87f1c5491361a37b03dbfdb18a7f59a626cc6de8fc43c07. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX202093441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450e38b6ce7ead3c8cf3c1e7c65472ca69900a7648749e91caa4683ce01cd87f. 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/FRX202093442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc554248c88bf0f199b9be3c0720224a898f765ae768caf915c27d60f1c98cf05. 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/FRX202093443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa4323fb60ce69ffa8bb8a43a46c98661bd69f69bac32f7ac2259a67a389a39. 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/FRX202093444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e208234f1f85e6da4bf317305cb2b48a0d653e31faf0dc6c505f7c4945c617. 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/FRX202093445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a6872662fce7552bc8a851b2da7f2529ee5b8053be643c82a09ec49e0897d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX282085371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746bcb221c99b67158d22c54f47fb2416938632d474a7121dcb9e42259dde8a5. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FRX282085372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f3a9432ff8c6345b027286e9c4c810ccd01d059e328833f2e2f3cef9d2a1e7. 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/FRX282085373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9acd9d3b6a5d6027e86b53fbf052860ea29be944860e11ee1cfd2ff2542d5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282085374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b64c50a6de52d89c504d45c3762b94c17d6c73e7f7e00b84b8a744575aa1c72. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR2X42236001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d8ec906c9ac6e3e4aa3268ac7e07db65197460c905321c5706c90f00016aec. 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/FR2X42236002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848bd95d7a84ae5b9e68fb728e86e3aca30b5bf7f80130132d54681e45eb86f. 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/FRX282089773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd351d8a9a58e445918e17021a8a5623ef3fd47435e314a08ad05c8fcc268185. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FRX282089774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a156f5cfd33a7dad60b7a2fa48f1d4ddbb3e9a263486a6c7dea9708194f08. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR10S2109186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6fca62351a48922aaa6236b23f136516a812e68b76a861f69f90fde644098. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR10S2109187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceaad27792071d995ac9106d70fbc24a73b39e99dbd94611a1bc10c02fc0ec9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:11Z), 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/FR96X2198637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df8f068577e8bbd4393cdbe69b541414e716698e96bfcc5819e41f437e5e0c. 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/FR96X2198638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588418a9938b0f65e4b620faa9eb975f368b849562e2ed84cd2f873404b641f9. 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/FRS182129231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95293c048756522c9122fa1597c981f7adef76f3fe934b70db51c514c82f23a. 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/FRS182129232.