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 0x49b13e4f1be4d32905d4c6407b99e32226c1faf8a7ccd24eef42b09775bfe5cb. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3369ea2d-82b9-4aed-ad23-45db13ed2792.json and https://artists.proofprofile.net/proofs/artist/3369ea2d-82b9-4aed-ad23-45db13ed2792.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 0xccbc77f79f7599448360dcded919fbcd56726979e4b7870f636f991827da1930. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5BU1947972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f24f98b4c8045e673c6e3445e3419c77dc7db088d81ea2ca6556a6f6e9fe2c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:35Z), 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/SE5751916480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9b78aab657a212375200747ed79366b5bac3ca70c6a33f8f68bf342b5f6af9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE5751916481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24804e852e2da05d987b30975bbf59bdc9340980127a0a9c2da2aee4a4e14b. 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/SE5751916483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbb7f590857aa44cb498390ce4e5ef3110a255503af9c94f355d6fc06730003. 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/SE5751916490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f17d6286f3a934ba9b8bb054cb84d8a3f5132c391db66758929adf498b6a2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5751916493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97192301d8a9cffe532082f09b15de67e8c7e02d55a3e98c8e27037c42a898fa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5751916495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd36cd5c762b7206c4324feb8e76517099fd6bd96d922ffb30ed26f7684b69. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5751916496.
Hierba Mala Crece en Toda Tierra, Compilado de Skapunk Latino Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57e3005b66e70d5c45f608287b382eaaeeddeb54c09a47c41e5e007125a72ae. 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/QZGLM2201966.