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 0xcbb3c46dff11d2f965d4821269f399b61ee39021a9e7b1b2cc58e9a5bce031bd. 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/8df89622-9bbe-47bd-b56b-610a1e5051ee.json and https://artists.proofprofile.net/proofs/artist/8df89622-9bbe-47bd-b56b-610a1e5051ee.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 0xb4482a98a2fd584f2e5d77c8ed73df3c366903ce55c3dcbbabf2a8bfc7ac20e5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNJV2017774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b593f53df5e0bf87d6f572e60fc2a13f5ad1717105f0f442957bc4091138e. 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/QZ5AB2147653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8466ca18476e75bb86865abaab989bde536670a0d5bb246f1cf820a049ac49c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJZ2132667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809b354ea3711a70afcc1666cdc1df00cfb42a3e781ae4205e7fbcb9ccdbd87d. 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/US7VG2355150.
Saudades Tio Baby, Peppa, Titio Rolinha e Bad Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f56b1549f00919b66ff6020bffd355018c2cb8cd00a5fa29fe9897a35967f7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US7VG2355253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716a4217d2ecb45e52d0049fe901d803234a33409b5d7c1e742791abd208a83. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZNJY2311648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d39d2b45faa9d167f07f84490cb5e28e5127f26e1d9a76ba80c8fc849568db7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTPX2363566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89ab2969bd7c6788bb155daaab5c4a56b8c4d91c9d0273c85a64e89332d03d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BCVI52500011.
Vou Te Chamar pra Penha e pro Complexo do Alemão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c52c9f7804bd9342a54fbe0cccd5fe24c7ccbca647858f5f0459d5af445127. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTPX2520494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8921a26d8f033e9f633bcfcc672d4f1be322dc93bfdf78f304731649273c061e. 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/BCIH82216597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c8e9b7ec4c45f3f522d2d1f314f93a6df5cbbfd0497632106bc5de1faeacba. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZTVM2569506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ef4e0914b4c53357d247f7bfd0b2ef0fa02abf4af4501235d0d7a7becbfdcd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZHZ52213656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8b7b9bbfd78b3e3677eca5aef99f1cce4c0f1c371e34855b67b1c2072198fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2334436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced596101ef28a25d529c046935ce6b7edfd96057ce39ebf4ba0ef923bec581b. 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/QZNJV2062141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8d6b361e6f16cf3228fda49316758b9bc03f28a9393a8623604454458e419. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ62079156.
BONDE DAS MARAVILHAS NO CONTROLE DO GAME
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45fb750eef733fdffa3daa8d0dac18f5654c1c210b868606582373f8505cc04. 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/AUGBT2434787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfaf7dfda6c75fce256878cb4f0926c6a80efa4bb5f3b04b148851a3d38676c. 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/BCNWM2400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c82d1548402a5195031862eef6e9a7a7b6d74646b28bacf881ebff8b366b184. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BCCAK2300007.