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 0xfd2a3060fda3b6ce3988c7e1ba2e63b726d888b31d98ab9700fbd8ffbfca3c68. 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/878fb281-8a8b-491d-8d07-cf6678594142.json and https://artists.proofprofile.net/proofs/artist/878fb281-8a8b-491d-8d07-cf6678594142.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 0xa7929a2de71e8da1387a880958f6b015d5829e32af899f028a9175aba33d922d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLC062413590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa5bfba4ceead9f5c66f7e5d64e1dafafcf2977ab4cf8acc1ee3ae7a9ce051. 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/PLC062413625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ff87da6b29405c5a12957b304a1eea382bec77864348da27becc802f71a9a4. 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/PLC062413366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7bcb2400fd0d6e2a903aa50b8e0a2a5409028fc8eaacfd357fc4ffe97b9e9d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLC062413627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cb8f76d1e7cc7d2c56906e7650ee2825c6201d929daabdc7d58c951713f8f6. 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/PLC062416390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7813325709a0e0ecf5765de34ea32844398cf4978c33a5b8dff689bddc73d3. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/PLC062416748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2fdac0a6214c93adc9e38514e54c336a55a47b4bbf75e7439c0f1372d8153c. 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/PLC062413581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7929a2de71e8da1387a880958f6b015d5829e32af899f028a9175aba33d922d. 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/PLC062413590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f15b867951bb1882d3425d031ede3a9a71e1d3e3c7dd6fe07e20a6f257d700. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC062413591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006b9c1b19c65761eb7d647e8de27fa25a711ffc8dd8366a7bb43a350a311c43. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLC062413592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47889afc0eb362061e1408f78fd642d2c77c2fd442e375bc4983dda973d3e5f8. 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/PLC062413624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa5bfba4ceead9f5c66f7e5d64e1dafafcf2977ab4cf8acc1ee3ae7a9ce051. 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/PLC062413625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ff87da6b29405c5a12957b304a1eea382bec77864348da27becc802f71a9a4. 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/PLC062413366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7813325709a0e0ecf5765de34ea32844398cf4978c33a5b8dff689bddc73d3. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/PLC062416748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7bcb2400fd0d6e2a903aa50b8e0a2a5409028fc8eaacfd357fc4ffe97b9e9d. 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/PLC062413627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cb8f76d1e7cc7d2c56906e7650ee2825c6201d929daabdc7d58c951713f8f6. 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/PLC062416390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313abc77b2f05c149b8c9854ea8db112e2c6f163c81cab975353ea7259623419. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/PLC062418846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8d1e46ba7e48bd0953a37ff46b82c0dae646625e34c39adc1300350fc1dd8c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLC062429973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dad21255477ddb59fec96b356ffbaf9db797b912b866563ced98e656b51e1c. 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/PLC062432205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d67244b028a649bf235edb0fd20258e15e6e1fb8269502993c4c93c3c01282. 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/PLC062433616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ff7ec162150d3224eec4dc95982c474cccfb3e67e96acb4542f54dc7fc3dd9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/PLC062515487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b2fe1b9d3273725621bebbfe945eae39cba2e4d570087dd499e4f469760f3a. 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/PLF242514530.