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 0xb46382265b39049c303922222eb4fe90485f4aa132aedd67e86fe206c486c70b. 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/cfffc243-b6e7-49e5-b6c2-baa7ac6b4ec3.json and https://artists.proofprofile.net/proofs/artist/cfffc243-b6e7-49e5-b6c2-baa7ac6b4ec3.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 0x916ca02f9e0bd0a74d3d6152139b25e5168c586123a811b940e401975f7172b3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GB8KE2201064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d634eee8ed42b063efd218dda70e2083998a36ae245fb1a26ef882b5f697e87. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GB8KE2310840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2beb6c42bb53bd91d6dce0516010b6c2775bfa31b0fa61d65677c34c47bfe2. 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/GB8KE2316206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3286c750bdd3653d3a0b5492bc586aae95f0f38c9f4dd2f1e478b5620263f486. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GB8KE2320254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a87928737a7c40cc5f6621c790c718339d7632a29bfb4551e398d397864ae4d. 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/GB8KE2326407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dad30418d90f13159c84d1853b8f6a1cc41dd19d0ac3b555d55bdb3ff7d36c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2402349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1734a40117a9ebc69b31051bd8ef7846873db62c13516fc70e803538b97cad. 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/GB8KE2406560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd694230a8e18117c213cf103dcef3aba0ad9e86796914829e89498794f870cde. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GB8KE2417670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479989ec450beef6de0b88605057cbe4f90ffc23d30c4b264291403a6d256b3e. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GB8KE2417673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b80ece0f226a479cb981fa064df1f79ee3d656dc6d8cc0493504afb04c106. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GB8KE2424756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeeab21d99c750dbd3e8beaea710e637f8534a4bacc2190b977a362b5ff3934. 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/GB8KE2428836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5ee26da3fed89ae45107c78f291b06dc4bb36087f45d8da3d835ff9e5dff6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB8KE2504674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3815327b1e9b628bc975dff40369be86d1210260fedacb669773eb00ab902d9b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GB8KE2509993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad44ec6d8447cf9b7ada68cded0d3b65a3e86ed9a3b70ca143eecbdf3f1273. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:45Z), 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/GB8KE2515969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dce5526a966d952189f8e4af413cec5cb28c7067868e2c4f24a7c083a84ec6. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GB8KE2523811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe435068c8ce8a1bedb4c31c2814c7c1748bea3cd41c18099b0f728a6e1431c94. 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/SE6SA2464029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680a54b75fab922f52c16575c9cfb83f98d66c1670496c38d0b35d315fb78af. 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/UKXN22351838.