"Beautiful Boys" is a song written by Yoko Ono that was first released on Ono's and John Lennon's 1980 album Double Fantasy. It was later released as the B-side of Lennon's number-one single "Woman".
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 0x9aa2184b02b7e4514af3e33923fdeb220a44106b91980b095191e48731a06e7a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af0a40f9-cd6f-4ae0-aa15-5b4d338b0a2b.json and https://artists.proofprofile.net/proofs/artist/af0a40f9-cd6f-4ae0-aa15-5b4d338b0a2b.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 0xe26a7640c8c1c726b7055b6627438f4ac37b79cf8ad8674b9b2d5e947f8119ab. 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/RUA3R2142490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39874530aaee058e0ba6ba79c814c27ec739d7c0f92eeb0b69455bd6b759ff6f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/RUA3R2142492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf712e10253d8309bb28bc73c30f15beab2b497ae2441e961423f975e6357214. 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/RUA3R2142493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beba4d62209101068a2d09af7604ef9604399b2168307920abba7823a40aa0c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/RUA3R2142515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b80db2acbd515b99edd067f5c4566cfbef3bf54eaa2719030069d331305d311. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGV2300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc952a8825c9af4b180d7ac38a55fc6422ad9b84295ad26e70f7f271f9b36d2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/RUAGV2301693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa082701fc68fd6061dd4b5a7773ec5e206df320579363f5cbeee6571908f3845. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUAGV2302848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d74c83b162c4a69a7a54a92294b4e15eb64597b3a0cc7930fe4632f3a6d5432. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUAGV2306343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171d6d0a919589e7e94e56ad98aed8ee4806b7157a688dba1dea88dec093b529. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2429421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149df48014942e8473729bae8066251e4ab1752993be25c4ed0394351e3ff000. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2467353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc074168a3ef44e4afa9ac1395e8fc419a0b685a813c9b959697bce9a04327dee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2484962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23cbe70d5a56e71793bf78de2f321a1254b158c1ce523ab9a67e317a8c32378. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUAGV2407485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bf2ff8af9eb18e8401355dd970f5f5df8a426f7a49fd88990d47703d73dda6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGV2407486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9878bbed3c9882629917c343a3d9190cd6aa5980097156e5c72e00127e82b3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:42:35Z), 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/RUAH62402196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7381b8dc8b2f11a9cc4f656a6588d63e9d5238c3b4b96389462471d4dd797bd7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:07:16Z), 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/RUAGV2410384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e49f2c83c1836d7e4b9d6597d7e44c05720f40686e4ba376534878234d1a1cd. 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/RUAGV2410386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a293615e2933c35e5ce963bea8b0c6593ee2f6f29474694a9851cd06c67a0d0. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/RUAGV2502779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa810245f5c0230416f441eddace61bdfbe26234eaaec298555b2e7ea17127a96. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/RUAGV2502781.