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 0xb5c9b8d2942e87fa096bc358a02aa6ebf4887a9ff35ede0483c426042c6813ed. 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/4a7b6346-98d6-456c-96c9-28678ecd7a5e.json and https://artists.proofprofile.net/proofs/artist/4a7b6346-98d6-456c-96c9-28678ecd7a5e.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 0xc82aeaadc4ef681bee928c2e511ac3c32e44c88e1c84132e4183dbd662beb07c. 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/DEVY22300037.
Codex (feat. Hanybal, Ramo, Hemso, AJÉ, ZINED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b965a17bf9b9036e84ece063429fe0a348218d149507494e5bba91e0465aeb. 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/DEVY22100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6343bfe8fb90c605fd498a9c4557b417b8788c40f4030f3211bc1e596b3434. 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/DEVY21800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fbdad48ecb2067aa330c97835c7408d6a9a0e3ebef9dc2a8189622eb0a98bd. 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/DEVY21800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcf0c6f7c95ec7cafb988470294d4fa2823ce6ace308e778fa8c35465988c3c. 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/DEVY21800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838fc627c5c0bf87d166af8f4b155a191c23bc8a03e0d21442d0428c8a01d10. 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/DEQ121534478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d5492c0508f2c08ee2878bef83de6577101e57f3a607705e2efd29efd9a285. 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/DEQ121534479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f23dd79db28d529321fc68b4000e09552c0067cf8ab6b3ae1b344e17e6dc530. 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/DEQ121534480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9b7b1dbc8fc5240c7a569b9b34c716e0d617f59b8d02f6244e2598fa35f802. 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/DEQ121534481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9889e90574262bc57fd5de08ef7aa327ae32778e942af6c3b145b975756ae9. 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/DEQ121534482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b19fc2b684e5ecf7604e60b0b9bce0db7d67ad3f021fcdba8d8a289e5546e0a. 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/DEQ121534483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83868edcc40462dac7fd6578706a3c17e3283a9b6cf1ea3fb5aa3396504f6469. 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/DEQ121534484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040d87ad45ffcff600a454af858505397c488dd19d647569d2d42ea41a54803. 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/DEQ121534485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251357c068da2b52d39dcdf41114ef6bd11539b876565b69a2f6f7bf80b53f6c. 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/DEQ121534486.