Gretchen (, ; literal translation: "Little Grete" or "Little Greta") is a female given name of German origin that is most prevalent in the United States. Its popularity increased because a major cha
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f8ae504d70e668ad7524b1bc4d2395b3d4a7cfcade08867bd66ac53b6d7ee. 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/71906870-9c31-4860-9160-8062b50e8c05.json and https://artists.proofprofile.net/proofs/artist/71906870-9c31-4860-9160-8062b50e8c05.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b78cb91b41526f288ab824ab8269af7c9f3b55cd7b17f00530a73a544781. 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/US7VG2296650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f435ea18cba8223579ea48bad574476a4019ff9f42050e1b90e1d31f0dcaa90. 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/BRR8P1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b9cf41e8090e2acd15d01168275e3da119454abe845d090718a428513656b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRUM71705594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1c24793782214890bce30ccac95280ca06e0839bdf8c702e9d863e27c183d8. 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/BRUM71705595.
Ela Tem Raça, Charme, Talento E Gostosura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f3fcc728a90fe7f1c03b99200e345ba1c860f33196ec6237990b1af21c7a24. 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/BREMI8300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cbfddeea4d73d631d974173eb69bc79dcd72ce929074c7f0b7c1f8d36d7cf1. 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/BREMI8300721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452270e2814f0b5c103fea9f0c218430528e66858936551673ae810abcc50629. 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/BRUM71900877.
Greatest Hits (The Remixes by Ennzo Dias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd39541fa1cac662e5493976d38db3b60da91edf001b040ab5c96de70e285e. 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/BXQS72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8847a3b43539122bf5e9a28302e3ce8d40d640fa35b9fe2291383d21fe8d136d. 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/BRBMG8300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef220fcb0bd5ea34b600e0ee7377c09d7d5d9b6c2fe046e09400ee1c41a6cc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BRBMG7200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f287c7868f15ec1c8253c69fad5e131329d5175f4a19b647716248513eff00a. 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/BRMCA7900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dbb2ecc9a6a73ee3632d2df7c80582204556578b6c2b6ffa8bba6233a369c8. 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/BREMI6900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a3e5e4c6ffd072f975350667ed34f3a6b51206deb093f747bc662c3f4d3836. 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/BRMCA7800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e00add30ca90f21b02fbbeab555f205db6a760a6320682c07a1b710494894. 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/BRMCA7700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc8ead4b8067fc9a89db872412be2a6f2fcf572a7561de721cc3e88d23d4975. 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/BRSME8500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ebc2ba63d9d7e1a718cf1560c9cfd6e15dcb7f0c15fbf66c9e29ec218e706. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRMCA7500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170f240cf78312ba0a2f42b2df8465b7f1519503d3ca5afc702c5bdebf92dce4. 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/BREMI6800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eaa6dc731c33a22d75bd790c6b15e341ebab0762ecf3483573fb567f90fcc2. 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/BRPGD8400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dda1705d95d498e8c90be2e213c946e11f8f65b9dedb419de9738768e618627. 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/BRPGD7200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d54047b4d955a4df6fad231b06f326c6dd3bd0323a5b760f64ff7a3c5de3516. 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/BRPGD9700366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a535982ff3cc8d4cc0aacc37be2ca00443b3a450be4a025673b38b1c1327644. 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/BRPGD8800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006f5dfc1eee959a93370da3f23a32b52d844a4ebd8a33a3d5bfb1f4f932004a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:20Z), 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/BREMI7500549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab1db8f0c2af27852707cd0332c9b894c69aa1dca1f0abfcc1f78cbbf9bc1a. 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/BREMI8100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654326ec8f39551ae5becf9a102eef1b27542ff500d31c22521b58dfc522af98. 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/BREMI8500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4679f2abd01d93106da604118636fbd250d0bb9c9c8785a00a295880a968a9d7. 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/BREMI8500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5687686cb5be169343108c9b5c95fde6689575baa3b1e85ba52c5269adf93b0. 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/BR90B1801229.
Homem Chiclete (TSO Mais Forte Que o Mundo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a18adae922da4aa11aaaaeb4a7402e9c968f5024c12b3aa0de7ff4bf15fdc70. 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/BR90B1801237.