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 0xe397a24e218cf8b5c1c2293f3871059d8a9b5908bd8154e3b7e79137497ac35b. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6f1a0e9-dd31-4d17-82b4-0d8067fbbc5f.json and https://artists.proofprofile.net/proofs/artist/c6f1a0e9-dd31-4d17-82b4-0d8067fbbc5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Viva o Presente, O Futuro a Deus Pertence
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 0x3217d4583a792004c6f546678283d20638feabfa01a235778ce84fcc3cdebca6. 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/BRAPI0201193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff72b3f97d78007e5f24f2f967b1f55bc9a34fb3a8c413b5f60074a63b89d5. 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/BRAPI0201196.
Pot-Pourri: Intro / Amor Sentimento Abstrato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d79138eb89969aab8513e2ed93acddd3ce49c3352ab42b31c8ccfd490b1455. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRAPI0201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825336ab503c9d3547fb07d53da06437e8e793f0438566781329e5a13a7cb402. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRAPI0201199.
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
Pot-Pourri: Intro / Hip Hop Futurista / Sem Essas Nuncas Nessa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e31b6b911b1f03784ef70a00738d9c32f935a122b92c93cd33734dc0058a146. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BRAPI0201192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801dd5f62b49f3245617e269895a4be8827787b3f098853e332fffa1ebac595a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRAPI0201194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f54208ec2d97ede9f3dbb7417093b273a020c05798521639af632d4470781. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRAPI0201195.
Pot-Pourri: Intro / Nas Antigas Minha Infância
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249b343badce6e319fcd6654449d556a568d64d39dbe38ff29e5630783aa1c8f. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/BRAPI0201197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b226b07a88d9fdce2f9160c7ee0cce9160aee1dfdab2fa6f20fb8aca1e1bd. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRAPI0201198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a26c52c2a19a475dc2d5b909eabec4a60579812940e0ccac4f809e1399c42. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BRAPI0201200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f0751045a0812e6196a0a5abd80dfdf0b7f09947f90e8f1a1757ad9cf4052. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRAPI0201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbac6b59baea1c3608c1fee082c596d8458872016ecc365fcb23ccab5198694. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRAPI0201203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6d29996cef0e3fbefbe22c18e922a83fb28dad9546156c25a0d469bf3337d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRAPI0201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7d311ef832edc3dd38cb4ac525f18d3021a0693796bc522eca365dd7485f9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRAPI0201205.