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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f57a8b1b628e8112af5a6848475046c886c68a3229a3ccf0f4903392938abc7. 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/fb5e3f06-89de-4e13-bd85-dc13b5cb29ae.json and https://artists.proofprofile.net/proofs/artist/fb5e3f06-89de-4e13-bd85-dc13b5cb29ae.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6adc12f4fecd6831b6a8def48928b66f4f36a9eb1bf48cfc7f3cbffd910dc21. 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/BXKG22302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b6c76542512d078598e5cd2ef63072d55c93d96caf3721586e979c15e2c0c. 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/BXKG22201279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308f1285311fb35579e671ab692a3ae7b05a1ab858739678fb4bc9a1ce518d3b. 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/BXKG22101548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8396b0a8cdc0c98cb6432d8ad5ce9cf89793f8718e9ca212af52ed07264a024a. 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/BXKG22101516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88d3a670025c255052d9ce86341c4f4d8e5971d165ed35ed2ca07a4ac7c7d3. 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/BXKG22101252.
Set Dj Alle Mark (Maestro do Consciente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758f2402625b98e9088338800d59bccfd28d32153cc8cc70d0214e07896d507a. 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/BXKG22100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c3581012523a78f39188a11a266658425ed41fcc18211c1d582bf6f9e3b418. 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/BXKG22000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b652a5d9e873d8ad7c298a6e1ca664bafb459efa0912c07c3d10ad84c49381. 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/QZGLM2580737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e83f2963d621720203c621ce71094a0270c5eab0d48d1cd811c167eec3650. 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/BXKG22300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d103730f02d89d7fbd02eabd6d3f7f8bf94a31e6fa37ba0778af4c6bd60a435. 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/BXKG22302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464229a02de464e60e513d64db8c49b54a86560e2a26039cd9574265ec3978b. 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/BXKG22100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb797ab9db63831ef2c77ff572be7cc828f0c45e7208cd5d33e0ed42f418210c. 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/BXKG22101478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d28df66991e178a24c22d770f6852b839a2e7c2f60e5b8776c11f7e5fc483f. 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/BCGSB2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44db76f930bc44c53058ea1e14990f0bbcdd1b2800c7cc6d7f3cb4ccee53c61. 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/BXKG22100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597a1f36591026f4e94335349af1cc20922f08a2353429450c31311b1cea8daa. 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/BXKG22100489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977cbb04c8ef57fadcdf4766cd30a6136e5e4c690f3d4fd1681c9460f936ea3. 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/BXKG22101253.