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 0x0c5202705e15102454a92ce6de6c1ea72c8f43c82e4c7fa1ddfa391e1bfa9344. 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/ad2a5df8-5ede-4c64-8b03-cad382a7a5eb.json and https://artists.proofprofile.net/proofs/artist/ad2a5df8-5ede-4c64-8b03-cad382a7a5eb.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 0x71f3e3d7f9d31c036ba08e145297c5a28320d7543497cab2aeed7fe9cda83595. 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/QM3DF2164187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65cb481ec135f6665c17a0eff1f73c0e21135316277790b50bc2f4ccf856baa. 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/QM3DF2166767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77c81c7cd24703488ae1f3cfc17e25f58bd60355271bba66eddaa4ad44c3449. 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/QM3DF2166776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8bfb1701fa38f6e85891dbe473a353f54db881294bdc61859e56502b03a202. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2164192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640e2a600835c527db259b3adb84df8e4b6b992b479cf8d0a7814eb8c51bbbdd. 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/QM3DF2166772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe904a8f21fcd3d776965a8c5ed6c3c0df254c1642543b3b6b011a53f922671fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2166781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3b213db94e3d13d82d9a48ce472a64eda6a5d87d7fdf667d3bf718a47dec57. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM3DF2166793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a7c0c0d55a5abd20c036388ecd4d6b2cf73c08fd6b681502e381996a9c3d5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2166783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac877ab053811379b1b432403ad848b8d70ebc061fab9e70785693df658c5c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM3DF2164194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242d3f1f98a714fd708abfa86d96429a848312ce0ebba325c17ecb52726c5086. 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/QM3DF2164189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a222f91427bb2360ea82953795d0d0407f1d302d74885c53f60f734d2fc77. 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/QM3DF2166821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd060ea86c5f7bb35a4a0f80aef3b859ba394556bacaf9d3f1587507dff5b10d3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM3DF2166819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861b393f819edce53056a0aaf01833c8dcb542eef37bdeebde25d4709b155c18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM3DF2164186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9c86b24c9db98760ecca1121a5c57b72284512bf0fda57f09eed962bc2107. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM3DF2166824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86974df675427f6eb30116d7ea7d393c8fcbbc9d6dc1cf7cfdb8a7def0070d14. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMANG2202948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe85157eb9b4eb514909d2dab0d62660b980612a931fc7fb188519be44d64a7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2458197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d0afc822845cfbf0e86d756d521e37b3086643b1b0d8e2c0385c3377434cef. 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/USANG2458199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b569b51f6d2bf9f6b23b9caeac00fa4db48738fa9392872ea63e9701efb938. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USANG2458201.