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 0xcc13ef736ad360cddb75d94facd0530e49ba0e7e6fb201f480e18901759a1da3. 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/75b7580f-ec1f-4013-8085-007ac5067fc8.json and https://artists.proofprofile.net/proofs/artist/75b7580f-ec1f-4013-8085-007ac5067fc8.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 0xdf8ace76d8be8039fb5fe052925b49c396eeaad7d76420fab27c5381d10cc693. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE6XW2426128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3d13c02a40200f588bd808bac8dfdc6c02111610ec884a69c1d2088946754. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6XW2426129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ff6d627acd5b70f2b559f9bdee5b64222ef72d6010a147c366bd10a23aff7b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE6XW2424296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad157d28f0b594a83e8876e069b896e16bc4d3667070d9a75a2c98faf48df0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SE6XW2424295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b97bb3cebc099e358213b1c4eaecd3750d77d3a0686b2c8cd8cb037ebe0e8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:51:52Z), 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/SE6XY2517421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9174880be38a5323f92c172c6807e2208fe7acd882b3231cce4ae19c5d43e719. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6L2551978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbad7faf6c89b775991ea2a72c1eee7cef1f591b5bf7fd24707f0ad4065a66a4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:51:26Z), 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/QZK6L2551979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0542339c4bf1d70daedc546366abaf53532dd20eb0149eb917580be3b53744. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6L2586504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef76a4097d8341d3777e4c1819f7c58fec9a7c3a94f9ec5dd488c56fc7715ee. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6L2586507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd4a546ca33d57b3508bf845492a69c0e1b89456eee4cf54a7469f90f92ac06. 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/QZK6L2586509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27389fada15f54fa49d037cada08a5bca2628b819ae7a39f9b1be8591c4c27f0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:37Z), 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/SE6XW2421793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b60df9c8aef1d936f1588d98089d80a4c367e0029b6b408be81e4284792a533. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6K2555482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e85fedb813e18016d9402d51ef58a5390a423d1636e0d942d6e3d194f11fce. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6K2555484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ff63b41b807ab8dc7c4d61265938d666a4ed58b9cd78dc00bbe12129e50c50. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6K2555486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ddab3cc8749c73e9d8606aafa90f61fa5e3fa8caef94789aa8a36d34b3e62b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6H2518835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b3a0cba836aeeaaf725a52ececf4bd41ec86e2cbe78c252f290c2c0f363d2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6H2518837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37914cc31246444251bc396abbbca28e4891dc426a405373368a311613e8aa1e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6H2586449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe1f4429bab9c35d118b4aa298a3ee84b4622b3fb97082728398d8ceaf92fa7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6H2586450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aee6dac00163761ea249e0e7206001a0f7ec9a86ccf85a0d507e7b63375aad. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6H2586451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94b3f8b721060147ad50954cfe88e1fd9252b319d7f6a9d782eb98493bbaa6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6H2586452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6142a172afb3322bb80eb4a329496e21212ebb0b40d775eb72c77e3261223149. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6H2586453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae29e37a868d5907a0bcc2cfb103b7996b98e40a647c4b0b5d61c136677cb64. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:45:34Z), 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/QZK6H2586454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b31858535ab059e3306d8255da5e1809469cec360c64a4b284a5bc26a2570d7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6H2586455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa263f71005fe29ab779f173e8b787e53972217c769cd3217660aca26b5d846a8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:17Z), 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/QZK6H2586456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69dccec2e9474ed07dd2ebd2119f7b56fe7278d6ed0d1210d577f03b2b99402. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:18Z), 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/QZK6H2586457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9e744d6ae3356d14e7f333e56be3432bd17f05842306078edb6a8ecc75e26. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZK6H2586458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaebd0c7a2564dce0e93fd50246f7d3cbe1351b02bdbd878709b1af7385dafeb. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:18Z), 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/QZMEN2536722.