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 0x709e447f4249ba02460f83b46b8a9dd7e3e9a6c193a2f9561afc72994a7e287e. 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/9ff3a04d-b7ec-48c0-8a0f-eb3ee4c3a4bb.json and https://artists.proofprofile.net/proofs/artist/9ff3a04d-b7ec-48c0-8a0f-eb3ee4c3a4bb.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 0x9947bdfc2b653a4606a9990f0d129b3b8b3348b602a03189d552fbf053b75a62. 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/SE3OH1512231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96263e092c21cb5cd8b510ed4c11c51dd481f297b2ed673830e7fbf9ac97dcc5. 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/SE3OH1728843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5899f414087cfbe00cf20a5477961406b9e055a47af99ca1de52abb0e04a3edf. 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/SE3OH1622055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe5b545a3afb29f00bc9e1bc88628d9b572f04e207e4cf0be282301eb062da3. 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/SE3OH1616030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b8fe9591621deb139e5acac96fc104120591b29e0b0242a6f202850c5aceb7. 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/PTBM11400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05834ecb393bb54fca79afe1417d532212a75454ed771bd852f16ae6ec74190. 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/PTBM11400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f99896d491ce6d3bb06ebe304e6dc196a323cb87640c974fa238cfbb09756. 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/PTBM11400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616ffa298a155eb490299b89f910725e926a462d5579d824d311554d18cbc0dc. 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/PTBM11400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed26807c0aacfbc3b1645633b32000ee53794ac61e4d47d61d41fa2196fa8a0. 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/PTBM11400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0fb141f649ae00bc0675da0cab9cdd0f4767d03957aa619d4411cff3f2f224. 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/PTBM11400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50afbc0ca9c56cc0280686a3d91cfd15b42f6f133680e1c83caadc0b424ceed. 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/PTBM11400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ac42d903cb2a940a6ca865dcc78e231929b6dce28e9ba3322fb1ddb6a7c25. 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/PTBM11400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd42c861b2d320eae2344216f882589ba8614fefdabcc6a2913fbd4e3c53be6. 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/PTBM11400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7953a559d0175f8200c1248d5da5fc8c25cbe7f79a21171c19838bdb759df. 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/PTBM11400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f52ddcd55e62f88b4c6a2b1392159a2698fa9ba3290968cad57f2856b176d3. 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/PTBM11400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf898b2f4ab59deb721f9c0153e4f46199c9a6f424785b857f97c161ea62c3f62. 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/PTBM11400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018227f409922c9fdf9f080772f1cb5968da7d192f50c786b4c75e3e2e721482. 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/PTBM11400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb7f89a0d83fc6fc2a0b1dbb1856be1883b32d3e967f36d8ea6240e4d012be3. 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/PTBM11400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80c81b5e02c55fc6058fea03bdc8040652477a9503a8dc4b83893d73ccafb5c. 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/PTBM11400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e3806c03006851a3e6d14a32c4e1bb52fbca3f93776acf95d1cb8efd4b3065. 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/PTBM11400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91be08df6e32b1f7c935fcae0395013283bda34fd981b7d4e1d4043aacad412d. 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/SE3OH1610509.