Joan Chandos Baez (, ; born January 9, 1941) is an American singer, songwriter, musician, and activist. Her contemporary folk music often includes songs of protest and social justice.Jackson, Ernie. "
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 0xca5e6115a85df4b8e4f74d0feee0dc3ea1c690f2945bd9a143f2a4b92385a21b. 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/4561e7ca-c1cc-4d91-8cfe-7b6a04d49e43.json and https://artists.proofprofile.net/proofs/artist/4561e7ca-c1cc-4d91-8cfe-7b6a04d49e43.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 0x0c6f7c8c3006dcd2e1599428e4c83d94625f1cd7390df7a42dcc2ee1161ee28b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVG20185972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9452093a8cf76ef9041f80fb59a118bcfca58fe77a6888c19ab92fac6b722df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVG20500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388401a329fc57db799f7f0b661dde2329df63a91b2f114667756055c108371. 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/GBHGA1527826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388401a329fc57db799f7f0b661dde2329df63a91b2f114667756055c108371. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBHGA1527826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4a3d245eaef9d6a908c8effa7ae4fda6b0ef556a3d13c8094cf31b7c147249. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USV351466885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cace3559ec5f0bc80e9e1f379f90100e12923bd8a07e02d5e164a500d8c52d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CLCQ21500911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9843284a0cef566c740982b2c0e2cfc7b9f3060bf7b1a88e8c686f0f834472. 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/IEAAR0100018.
Ring Them Bells (Collector's Edition / Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286c814e1d773d228f03468402c019214d97474d20859e7b5a74171b06a0469f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USNVE0902801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78f22e8c5ba2bbe776d6f25231becf89c5b290acdcf7b82a69b004d7a92eba5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USNVE0902802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc295608ed84645c17243e71f548b423abc11137eecfe6bf9f95de8471de1304. 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/USNVE0902803.
And The Band Played Waltzing Matilda - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163971cddc19a47bc82e762aa261ef2ddffc945a485f709267a67624339048c. 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/USNVE0902804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d7076ff26bbb5976a4908ef29d658beec8a16c1dd3cd826a955efa3648e50c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USNVE0902806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac611b69f58ee9ee6d27a32eb8e07fdbd13cd6cb1e6ad5ea440c6a71c1cb8d3. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USNVE0902807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa898cb4f3fd9003c8e794fb6a78df1529366e69eb300e13b4f189c418a424ac9. 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/USNVE0902809.
La ballata di Sacco e Vanzetti (From "Sacco e Vanzetti") - Version 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d40164a3875b86583088b176f14f45eb11f6d59f2541c34df4abcea0b7652a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBHGA1527823.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
If I Had A Song: The Songs Of Pete Seeger, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2fa57386aec025ea44fd08a03c10194eb38c525aa4ab60b0beaf4157e452f3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USASR0505501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805b80eeb43b75f67044ed04aa7d400b37d91a81c6b00c5a59ebbd507259256a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USNVE0902805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc0de656f16841acf43ce8e481c5e023b2e06d3327cc3c1897b715354009fa. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USNVE0902808.