1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4f92fae2fbfaa34db780ab1ef01bd1e230e6359cd6310ad1528ad74050a84d8d. 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/c2cc75c3-8286-4b49-a14c-9ebd89ddd792.json and https://artists.proofprofile.net/proofs/artist/c2cc75c3-8286-4b49-a14c-9ebd89ddd792.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 → block OTSBitcoinBlock must exist at that height 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 0xfd4526aa5526548656d24d8b01f272f8282c24d14c2eed1646daa20bbd4edcc9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMPU51249967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e750f79ed236c7b42d7722935d6584bc4f3ac855f626965647a42d3bed384. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SMRUS0050536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b341ac870549bdd9550d0d4b9232b2eaca0155bb5e8795e0ca20668c304a6. 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/SMRUS0050537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a6b2e4f8aa4ff4363223e121c358d5140a89779d003248f9f9853bb2ad751. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SMRUS0055879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4740ca36b7b90e453c70267b54a7a8a8732f321df7203aca1557ba9aa1a55a1a. 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/SMRUS0057636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a1f01713bafeee98fa618180b330577aae7a9cc075a212fec5090e6ba73683. 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/SMRUS0057645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8897d6c262ba105c4fa55d297190beac6cc0e50777d2b40609ea06f0809745. 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/SMRUS0057643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89b1463c9352287df5fa3e26e5403db3b0f97a6c2ce116308dd18716cfe751. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:06Z), 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/SMRUS0070691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d684f99c0570e7ef4018f9adb83c7977d743e362e91921c3ab54f9fc53267. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SMRUS0070693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0eeac522d08eafbd907d40a63ef735a0fc9926b4399670b4944afb61caeb7. 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/SMRUS0070699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1b65e304c22477b00b338e216682f0a73cc69572dc1d7f4ddbdd2f1d21e755. 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/SMRUS0072698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b95a7b1dfddf796e33fcead38e742e86466f8402f9f5bae447baaa15c8fcb32. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1D2383715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453c321667baeb242bd3d0a8b5393fcb57cf279bfa74eb9f6b69def9cf39d4fd. 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/RUA1D2383722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29fbdbb73c3d3f68237585c8ffae97a161352e1959a212bd8f3912ec27c5ed9. 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/SMRUS0077680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac900ab3cf963267bd236adc5cb00ec4c5283f8c5722bdd656e36dfe0662df. 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/RUA1D2524663.