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 0x391b49189d55fb081a41ec32daf285563b8ac3edcab3145c2cfa5f597c7ab8eb. 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/ff20b4f9-bc60-47b2-a7f3-3bad8df0abf4.json and https://artists.proofprofile.net/proofs/artist/ff20b4f9-bc60-47b2-a7f3-3bad8df0abf4.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 0x86ef05ce5ef4d76177acaf6249518cd50fa4f1835ad8203ff3523f26d567058c. 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/DEPI82323226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9252e8e64d11c139b9035f3b84b3ee6dce426884a01dfa6f8485b66ff07cfa. 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/DEPI82323318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f02f103a81ad26ec17230f6b23bf1556b5b0c3e426fcf211a31d4b293d0f280. 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/DEPI82323316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4afb9d4b7848c4e0fda96d499382ac99768fc025b46e2a94e1f3f3419bc2da7. 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/DEPI82322938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb48bc926746040cc4d31ab70a46d864b0a20c22e65ff7c81f2b84aaa6709e7d. 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/DEPI82323312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d2b30ec7a7385493ce8a0d3e9b5219af3038482302c232a856dc6430df2f54. 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/QZFP52309922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d82ec57e060b7607ec230cc686e4835745351d35e03740ec18f0816d495c3c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:45Z), 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/DEPI82324844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43abdb4dab37f7c7843918f44028d389f782c911a805b00f0a6a511934172c0. 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/DEPI82401832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb00c9e2b33ce0de73a88eaca819f3e59f32bd4b6ff896be1ed2efb527dcaa37. 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/DEPI82402026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b79324c027e6c07da21f58aca0d502d848f72730c7a16a5f7537feb63b4538f. 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/DEPI82404375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bb4b4329722646a1813eefb22bb8e20c5a1de1ba76f8c591ff12188e6715b9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:57Z), 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/QZMHK2491728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca61fbe16209b65aea2ee63d1b80a9b94eb7071e696b193ccef2082292afc58. 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/DEPI82431149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fb68a8396b10055e3e3650a1c4e9986550a6eb2e204db4254e159040aad6cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEPI82440794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585244948b5a129cd1d182b6d9975c255d25558e46e3a23a7ddf9085c203cec3. 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/DEPI82502225.