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 0x6562261ae77f62677018951c75d3254579338ca7a7e2b696b5b3b756bd68f30f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dbfe75f-8056-4b60-9596-04ee94c088d2.json and https://artists.proofprofile.net/proofs/artist/9dbfe75f-8056-4b60-9596-04ee94c088d2.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 0xb5e647b861f611a4cce06838ea30c5fa44e369399bcf8aa42c61b171054047d0. 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/QZYZ32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c304f02335df34b5c9918389e9aa2aae227899326c61808c3c4dadf8d9e803. 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/QZWV82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ed3142e09f9570a6656e33311c736a02b6edb699809d117bee0654259218b1. 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/QZYZ32300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa57e97abe9daac08e9365feb72f9c88a871ef664d0a16540999be5e0c9c5a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZYZ32300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f3946c569053467c2b480cd783e10ff161e7f6d425cca6fd92f642a6f17258. 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/QZWV82200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe942ccf5c671636aeee6e918f04825a47e91567ab48d29b4864e2cd93684e898. 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/COC012439779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f3946c569053467c2b480cd783e10ff161e7f6d425cca6fd92f642a6f17258. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWV82200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c304f02335df34b5c9918389e9aa2aae227899326c61808c3c4dadf8d9e803. 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/QZWV82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5116366a4494422288dcecffb093b7c6d6e7e524c36ee92c9adf939b93edeb. 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/COA6W2000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826f950827bff21dee84ed5f2a6f2cb08059414471b6a2cf4d67be95e024941c. 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/COA6W2000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e33a816422aa088959c9f4c4c945105422d1bc38bae7d8a7fcdf8f47569178. 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/QZGLS2327606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44f792538170128159fed2c1c015798ed294ac4dc3222411b76b8f5c3ceb5ef. 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/QZNJV2319082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c268015e6ef689b85f86309de410b0deea8716d55e44969909cf3cf768bf7a. 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/QZNJX2314635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4af9ed2ed3294ccaa6e5c3fdc3333e5daa6b8444692d177cbe40cda7176d0e. 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/COC012338687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56789b7eab7cc23461f831a212bbbc02d1e68d20d511e0a3cef5e936cf54823a. 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/COC012338904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd476690d361694a8e28385e87f7b900205b55decba1f73e5500a7a08ffb322f3. 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/COC012338995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff97960cee3bc05dbcb7787af1420381c505f7ddf5e837e0bf5cdf2d792a2cb. 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/COC012339239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d50f5b9921eb0478ee508b65d8011c1ce6b0f3b4e42b204d87fa7f0c3506430. 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/COC012439358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe942ccf5c671636aeee6e918f04825a47e91567ab48d29b4864e2cd93684e898. 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/COC012439779.