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 0x33e4262da1f5ca21dbadb95058aa2edd92cd6e0978fbbca8c509c3a438483b8e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a0a7f61-6f99-49ce-84ec-5bdc819afb5e.json and https://artists.proofprofile.net/proofs/artist/3a0a7f61-6f99-49ce-84ec-5bdc819afb5e.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 0xa25b6b10a3958d4cc6c16225efc45e1c013c79c698f0353991aa6476e7442dc1. 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/TCAJM2598245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00bf3f1d9634f3a520c18e5f9fc8934407c9179ce113ca99af4102c3ebf9432. 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/TCAJM2598264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95efd793acec2bb65e0c6e12a9c0c86c93c4f04b60aeaf4c66592a57d4e3ae9d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJM2598278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd588358350ab512fb284f952bc04693d5679606d03c047d1c385396514c0c26. 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/TCAJM2598328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c70d67b594541d46cdccb8bc9ff612f072a62b12383b16739054093446a39. 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/TCAJM2598344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7699ea0cd56c3ca994c8169f15f53a5fdc4c15443a9f8d008eff3df1d61f4026. 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/TCAJM2598373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3246215ba83109a108c18257c6fa24bc80d85e23972a291658d5847afab356. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCAJM2598382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13bbe6a5a7c85c11f00c81b784a78811dc923a927e3122894e9b5d6e107d81e. 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/TCAJM2598476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc08af9926825ef1d4fb1be94cb929e43abe962bc267d64d340c2095143ea0c. 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/TCAFO2181118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a11217729c70fb21e6dcdc458448bd7b5e7df8a3484aafd8ec62e8eca7232cc. 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/QZDA62369696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb7fc11b4d3c6e728d7b304e4da9fb3cf399bb173faf9c5becb5c6b55b099c4. 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/QZK6Q2345686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d112b7f4d165f3f9e4543530d16b03dae95cbeaa8b0cb6a78752ab8b27b525. 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/QZHN32388730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4becf6d0bfa380d57b4ac131e7fd6c25a2c84b44d6e02879aef17435578ec2d1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6G2335442.