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 0x743b7bb20da540850cdf8b64bc6e12f67c979b9ad83d3d409aaf2837a19236cd. 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/a0adff61-4ad2-4fba-bb91-8f4540f247a3.json and https://artists.proofprofile.net/proofs/artist/a0adff61-4ad2-4fba-bb91-8f4540f247a3.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 0x402e6f068dfc68483089cb9a23c7134e289aa3dee360396d3fd3984d336b5033. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32414550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c8aa13ef3ad1de37d0d384e2e199407ebc9d0ddd95c7197720b36aeabcd1e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32406175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6b1c6d483c6d578d2951f13c1352e1142ba55fc4470ec1329ec7c683a8a5b9. 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/SE5W32406031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e259d0170972dbdb132e105eb92f09078e61c84eb56ceea27005aa0f2ff05d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32405923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde19e5cf2cb63884573d0e681682471151e30874194ea19c2594d8780c6e99ee. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5W32405670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0670bce5e166c0c6b305cdacb802d869453aca57b2b697aa5de2737e8860c13c. 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/SE5W32405295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f85252416f50424f1d834891d10a4cad2cecc88373bf3db5bc4233e8a79594. 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/SE5W32400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8900e4451728e43d6e89261125f086eddf618db2fa0abb1c8325133320b2c. 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/SE5W32400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1385aa5a704040f778f7b5ea2d023cd7a0a68b40cd0aa9bcffe1d7ada3aae7a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32309842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa675672f0d84c7218481599b8964ebce17f16bba4b06248681e5aa1aa63fa1f8. 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/SE5W32307286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2453dc9421da73ab248e389ed6feaad677c5df3cad93fa125843e97d1f3210f. 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/SE5W32306138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d225056f971b4c075c82b84d35f83d4c4820e42c73e86d07f19b1cb0b05d1. 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/SE5W32306139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41459dc1e2e0ee2cca04376bf8857debb2d2bb6648a2c6bb2705d9eeaf24f21. 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/SE5W32305527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0936f36bd0659273f6cb31efeb17433d7c0dc1a793a7d04b110fb8a906747dbe. 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/SE5W32305528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680798fd293d3ba260f45831475e9cdecf1d90e3e0ec3dcbd6d8cdc1f7cffbc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef3eecbcc73c1a2658d60fc88deb5703d19f9b2f24e39ffe966585a6dd3828b. 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/SE5W32204610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6034e6d15483fc8eae75ed238de7c1300995a2ac145c9290382e976bca331827. 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/SE5W32203084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26c0c5a82fec2023fc47327acefcdc934794b55c0e4abfbad4a4e3c9c4022d6. 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/SE5W32468309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c7e38f4674fec576728d632612750e7d6a0eff9e60371be60c09e9e5dc131. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE5W32468024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41d4c0fa24e512045857e75bb1c52be5281852023a485472b16d8c0fb6b5ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32415197.