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 0xc08f2a8a781b44c47bde013d1a77ac6158d40b111ac89c2a5b9cf8b5c00b8591. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd8a5e79-7290-4466-9073-4788c036ba79.json and https://artists.proofprofile.net/proofs/artist/fd8a5e79-7290-4466-9073-4788c036ba79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
GTA Cali Cartel (feat. ElMalaFama, Maicol La M, Robin Rouse, Elniko Arias, FineSound Music & Mauro Dembow)
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 0x1a861307a868721e31d9a194a012ae5e78973bc63e7227c1a2ab0ec6bffdfc5d. 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/BK4DA2319103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3697a9eb60089dda1d2e5282aeb4b09afd4e0364bde775834ea13dd0bc804e4. 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/BK4DA2325072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5691435e52c6b922aa640a942a24757a60cfe30f1df7583db5725ee2e3e93. 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/USWL12401797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911bae44c2299ffcb9616b746f436b34f836c415ad4bab88098a66de83a0b51b. 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/COAF42391926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726f0deec2ce9e9cd05bdc37b5bc4384f67238e1c6985edef06ef18e1acc40bd. 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/USWL12201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7eb5c2376917b23fd10433de234bbced54d1ec834f1c16f530e8f1a37dcdd9. 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/TCAGC2258621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5331fecc7a3cc5a6f07e24ccc53fc904d6b85aabff2dde1e35f2f31e5880062f. 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/MXF152401624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bcc3d7a7a26a5c2465f4510b751a1de40d30264400646663f59f0be74d75e. 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/USWL12500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd15b48903966698b3c5eea7f6b6dba6147855a57497f0ad9e6e0282a0af3132. 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/USWL12404121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6d4b9a9d02e4b08be34dfa54c8cfddd911b0b7646e6757dd8084962a33b1eb. 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/USWL12403783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c50e6d6696e39bfbc41611094f7307fd186e091b608fa57fcb2f83113c5fb. 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/MXF152401636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71be3c8fbd1c323696467898c300d652691cfe7d86ee11b42d0f6a7c1de4f004. 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/COAF42391013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c470205b9bae1f8f12a4816072b83bb10ac5e1d3a1069fdfca4fe63354fd593. 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/USWL12501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee9e6a706a983af02e9e9f71a6ef34ebe96a01817bee4125af9141a118cfa95. 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/USWL12501092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97412ff7c184c9fe8f1dd8bdaa9cee5d080e6a993074efbd938963675e752ecb. 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/ARIXB2500722.