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 0x9ac909b8e16aaedec9876376609c9d4fa3c53ef0623fb87b663a997620fbcd6a. 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/399362c3-64d4-4350-a40f-2e1525287022.json and https://artists.proofprofile.net/proofs/artist/399362c3-64d4-4350-a40f-2e1525287022.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 0x6dd0683c3492bb17694e4f7b0c3bc8656374c0a43d38660d72a148bb321f54d3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:04Z), 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/QZTL92400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87180a2632f1860174c6d4aa4070b0652e1b60f08b3a4c2e2199e4187108f31f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZS7J2407960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316989c204c318a18cd11d901ad2fc63c73f5fd324d5269554949cbd89194436. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZS7J2414910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e34d947657d409aacb38e6997bffbff6fcff3751e85aa16ae12d4f064663dac. 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/QZSYP2437198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc3490e01e2123458520433a8af06fc690798e817594c68fe0ad4e34f490c31. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:59Z), 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/QZS7J2406381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea79d4389638a8c96719950c153ed6e45564bdce192a2732074a5a29fd73de5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZS7J2472070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a00d7ebc682df94b36cce14dc46753cb7e44da83c5ff720c6db126c48714d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZS7J2473810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d435a19ce0adbf68fa6c5a0e010fd0d99f6c27ca5dd0aa56b318a26a22ab1b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZS7J2479786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed9d07c9c4c2d08debd5e1846c8978a5f3438c7acbdb16b49991ec2c1dd38a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZSYP2453296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa910758c569163b5ab6835711b771fefe1768f668df500ec0c97eaa7a4298664. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZSYP2475471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1f3ee93977c3810ca8e5dddb4d9eda8071eaf3ca89b1efcd27300b58e22d0f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZS7J2461786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a747b734b8f72b264ebf3608427f5817102ce54e13a78fca06451d93c36407. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZSYP2493519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5874eb71d4d663d97bd285ef0bbb75bed9aad2d8e650e8b25d9f60b65a1d13. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZSYP2425501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4e4aeabdbca9033fb206b3862b75e17ba7bcf6f5bbdcb1c7f1bdf80c682cba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDQH2504193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa26b291fe96d52adc22a8eef1392ac4f6bf33e213366220b3e3142fbd859f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:52:49Z), 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/QZDQH2504195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dccbcc117f64413dc438b0f25a3db15460fa5cffc4344bd7af742e83f17d04. 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/QZDQH2504198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d5621a66d95104bcb2c801cb212eaa7bfe72d11fdd1a228b2e6f9698eb64f0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:46Z), 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/QZDQH2508680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9b68247d3bc55ed0b24f9863286bbf1c02b5cb213f8fb9f65d501492588fde. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZDQH2508681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50852e9c36bb9b85fe9925b16ab9c5e86fb7bde8eb15c8fcbbb01b3089105f8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:21Z), 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/QZDQH2508682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229470b54296e1cdea833c1e49f8a53930a7ee5f0413e732f846155df86a7f08. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZDQH2508683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281b205cd0bfcb30c35385a75886227a774d11fee9bfcc093711405617d5b10. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZDQH2508684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe875a66bfc5c5f519299903345c5948e74e0319be69c0c54c421980dd7514a02. 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/QZDQH2508685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a141a6690d4220a4a24a8799ab898ec9f27b27ecfaabfe8932cbcfe20d3ab5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:00Z), 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/QZDQH2508686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41f3328bd7a49188327ce85a21d7bc37cc0695f757ad08e03569a30fa54d798. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:36Z), 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/QZDQH2508687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184c5a2a60cae0596cfaec0d0f2ba60ac5427eaaa1299d0115249538cdfe1fab. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:49Z), 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/QZDQH2508689.