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 0x1b0775c818993d873bb4390076ad41159a2c0aa6f45013702397a2881cd06ee0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f87fa9a-ffa3-4551-8bb9-e08d816e644f.json and https://artists.proofprofile.net/proofs/artist/7f87fa9a-ffa3-4551-8bb9-e08d816e644f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CALEB STONEWALL RAP (El Solitario Rebelde)
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 0xdbe1f3a6f92582bfaf5efa3c82cb21a799fafa32a4ab66ff6edcfdfc5f55e7d8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWY2102355.
JOSEPH KING RAP (El Rey de los Porteros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c47fae6821fd0cb17e98fe35553a3a567ada780ce3c08f06eb471e59b76cb0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNWZ2132812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eb30b60b02d970c253a9bfb5d5890221e6247bbc4cefa8b97aa46443410318. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:23:44Z), 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/QZNWZ2134360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e4552487ca6b1972c3431e855426799f9141d98f3c6aa380afbbb0aeac18c0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWZ2107848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a363cbeb4c6622bc4457e4f07b58ee4264fba76d1df2f521f01605e7e51a8f6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:35:01Z), 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/QZPLR2147765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267662dcfa0d998735a1efda5fc5ce64ea288841b83e93294bea15e9a0a844e3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:44:21Z), 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/QZFYX2290064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba0eafa0feeb91e0141a97cff354b57ab0111cf3b8c212ff19f70fcf3e26033. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:53Z), 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/QZFZ22239647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1050e903e90597f8302bb22de06998fd4f940d64879137c516a4d17b9539f2. 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/QZFZ72234753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf349a2cb8b7d6b430aea82707f3a38f1ba24e4188806dcf3c5de8d5cc7d8da16. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QZFZ72298413.
HECTOR HELIO RAP (El Portero en las Sombras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1ddb30b8ef832c830b30c11ad7834c51a11dfe0dfad80e3753d3b65262bcd7. 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/QZES62258348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c55531138089ba8bfbdd1aa9bd52b06fdbb15f80567a9e5955d2938d3e58110. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:12:29Z), 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/QZES62206921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fcf649a87d5145b00613e796a9ed08926a826314e490269daabe15b899b4e3. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZES62215927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121234aa61ae37b90ee2860302b18a73245725093ac189886772016d316c740. 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/QZHNA2222030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f51643a268d77e1a465f868f43936750bfe22126c206bcf8a3796cb024aa475. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:20Z), 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/QZHN92268886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fefa9a5ea0f592108fc62ac2166ce2f1c3bd1862306e2c6280564f666991c9. 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/QZK6Q2217283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e506f8f9da3e7bb10ad4e337114f9a37f045f6db254780e9243c91f9605cc0. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZNWV2323368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bcf1762e3dcd2a2b8d04356d1d3158757925488adbcf88eac4207e752a54e6. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNWV2321568.
Escápate (Spider-Man: Across the Spider-Verse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47016b4a7c9f522f1e090f1f4ba65d0c0500bef1335858ed4608bfd8a7951a7d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZRP42442585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c5ef6e7f79ad971cbf79272a18fad70b9d5bb93ef0bb679ac1a8d87916cfae. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZTB92478231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac039ed4de055df5c7f581c1dea0092b7d763391d212733da23649a91f778baa. 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/QZWFE2443865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e0d05aabc3d51d993476882df51f7b73e387e3dbaf9cfc4ceb399c303ec429. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFQ2436783.