77s or 77S may refer to: The 77s, American rock band Hobby Field in Creswell, Oregon, FAA identifier
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 0xc8409f2b93288b3b0f85a24d88188510d4359b39652e63630de7c3e0c8d4be69. 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/897d1af9-845d-45f5-a333-954fd8fd21cd.json and https://artists.proofprofile.net/proofs/artist/897d1af9-845d-45f5-a333-954fd8fd21cd.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 0xa22dc7263a80de640f29e678d7ec3bb98cc4a2b728592ebd4e43fcb064503435. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM1206282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3297a64bb1d1d01351386dfa12f2602c7f97690d9dafa20acc2fe6f113190d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USDHM1206283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451868a0be67644f8ad9cda095870b62a8e09e6cee208ffbde977b55c1d28c93. 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/USDHM1206284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f856d862a735c5fc88f2a7a05d3d1758bdd7c894d8067279d92b95d8d48d4. 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/USDHM1206286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2e14138c078347e749d49a9ed84109ff25b5ee1b9a9e416fdfcc2ef0a8208. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:56:59Z), 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/USDHM1206290.
The Lust, The Flesh, The Eyes & The Pride Of Life (Demo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662a8b4490b7a3c50eb36c6a260ddf55ac268fa408f977a3bf0879abbbac5ae. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USDHM1206293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1721eb267df3e397550859173129f4ecb3cbb3b9c5eb578b4f2c5e652b5ad79. 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/USDHM1007207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50b3a4e5a673f996484beece48e559c5ab78cb66e1e1e87ca4a059d87a50c7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDHM1007212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743854435aa9aaebd3bf9ec137a0b6e350a5e45855fe4e81a7fa22dae6917638. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USDHM1007190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5140a656848627c5cdb997d6466e9e7f27a978798f4eedf5606691fc310467d6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USDHM1007191.
The Lust, the Flesh, the Eyes and the Pride of Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1fabc69b17d9906fc0583cf8f6a3b485588c1fb334e0523fb542c817791b3f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:59Z), 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/USDHM1007194.
More Miserable Than You'll Ever Be (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb926836398f7a9ae0878f71635c90a8963afc181af6a84e4cb55c25841a333. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:01:17Z), 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/USDHM1709626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb523e63a6abcb8f9ce43e6284ebe974e9f5690702098b18a796b57e392c92c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDHM1709630.
Drowning with Land in Sight (Deluxe Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe839ab2662add393718d929dbf2c50959ca064d2fc916bfc734eab5af324d2d0. 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/USDHM1904221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9663b3123eeb1e75bfe2002308379d13c044f5ca2bccf681caa170e12eb31a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDHM1904225.