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 0x277109849ccd730a2662b5fa810acebac9a473e204f3fcc62e8eb79075881226. 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/e7662008-362e-4ce4-b41a-78f4eab1db69.json and https://artists.proofprofile.net/proofs/artist/e7662008-362e-4ce4-b41a-78f4eab1db69.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 0x041bb13f690245a4fbbced1ff25167bd3c1384edfa404c58e8c07cdd97fefefb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRIDO2110661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887fcf9a4662989a620c6b32870cae28678eef30368fcc19c72720af494e0ce. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FRIDO2110660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa303c60fa04634ffcdddb34fa72b122b9c89546121d47e9ff5d984dc9cbe9d1f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:18Z), 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/UKZ822100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa947f0843df041d0069d906a40007881bfb2d845e0895c8a78c394ed7896154e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:39Z), 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/USANG2219118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a34ef0db52e2595793aca27497bf84ad542b1f8dc4745a5ec849dab916fabaf. 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/UKZ822300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bdc91e16b89b906e4829b6c831d73fbe1d7898a7c929187ce09756bfb65294. 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/UKZ822300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33e58c069ead937926e8bc06a1c018cb25de5748adbb341213db03ff36da068. 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/UKZ822300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846ff4d650d0c9f10a9436619828a6a1c818af3ed7b646a93486422a1c03cdb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:05Z), 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/UKZ822300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500fc8b4c61168de3b74c37912774b3bbe2ede727752362bbedf4d5ca94d00a7. 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/UKZ822300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf20723910010049e5e5d9b7caaea0937b5d92210ac7e156f67db7b5858bbc82. 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/UKZ822300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5526021e551354e15168bc4b5c7b6e901a75037b2079c99fd561fe5db8197a8b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:37Z), 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/UKZ822300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c9ec0ae76b8d41c2628e89fd27bfdf716ba800b7cfdee8c0e3d51dc369af8. 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/UKZ822300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a8fb46fc216a595e7c5d15ba811e503369c9b4f6d9600b4f947c4a1205206. 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/UKZ822300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f850818168d48e21003b2809f34d35ddaa61fdec7f69e357283ffee605aee76. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKZ822300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4295cec3b5b5a5938d0ce93807ec18067939316dfed95faaf3e30ae97d42230. 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/FRIDO2412577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb4add20a49216ee7a706f9285e4f6dd42fb9ed6d0fdfaf1f90b7b2d7a74a8. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:44Z), 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/FRIDO2412580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf4cf482c1802af9bd83352af0cc5db2753fa85e3892b0d6dd27dae4bdc2d36. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRIDO2412581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813f12868733d0a811041f0baa185e01b3785602c5ebd887eadbb225c98aff9c. 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/US3DF2477246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d0894d8c77593263a5afe9301783bb2b311ed6e1d6ea92c77ca0561f1cd91. 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/FRX762430416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813f12868733d0a811041f0baa185e01b3785602c5ebd887eadbb225c98aff9c. 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/US3DF2477246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc36a6c5851aafe8337ecf590ca4e0148232f3bde19e60741644b61f363c47. 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/US3DF2480398.