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 0x85c943a1b3eee5ff5cf1a091f6dd414437ee61e801c1e4de89f831a3e4a5f41c. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c377469-a71f-4efb-9105-c3982d5fec56.json and https://artists.proofprofile.net/proofs/artist/7c377469-a71f-4efb-9105-c3982d5fec56.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 0x8003c8a4f83e6a66a638dd87fef18353047d65bada375cda0c77f43b56b88976. 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/USDY41834064.
Buena Vibra (feat. Ale Puga, Yessie, Sunday Funday, Pedro Cuevas, Hancer, Stephanie Zelaya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f9afd683478f36281841d7a85b63cc24841283f7b1ab324625fe7d26c86d9. 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/QZ7R41951855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c02f78dd6fa2042153e2aad15074b7fa8a3ed5e7bdd277186871ad6a4f81ce3. 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/USHM91770924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c901edc443bd6264fa85c18081912765a2c375ca9cdc4a74add96679eb5f42. 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/GX4R52349471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246134a039e02d334ff62bca56bbd87c9f01caf6868f49a0e7fc91b79d438b58. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGJ2243834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9de95d0f6d8e7008a8f50c8ab6b5c2372a7d0abf69770e3f58ce0a3b4acecf. 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/USLZJ2116793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10aca9f9f624a303902a9826b6aefda34de57ff30e651d2cd84fea6a9655e62. 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/USLZJ2021403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6e06d8d279c125df06c5d1f9951143acea75bf5fce9f4db97b3b143bf24b7a. 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/GBWUL2047039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683998881edd2a77e5c42f23bf4e8cf0dd4bc745964517b83e9bd75d1fa4c19. 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/GBSMU3546945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868cc44f651c4d7d2399604d99e0adbf2bdf6f606a747293facb732e202470cd. 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/US8DZ1400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4689a2ec3f0e38413eee9a819cfc7cf827e95b4f77f19fcb7a441466777c67fc. 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/GBYDN1420167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e7970f5fb8321cea46d52b816206ac5637ce43b63d70dfcc7f40c89ac8bd2c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US8DZ1400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e69aa56c0d2fec19a534f7f98609a3c74f999c1eb7d9b7ad020e6b969174be. 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/US8DZ1400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36494bef1542760d0eed3a7662018c519417e655972ef78f4d8ecbb24284c8f0. 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/US8DZ1400254.