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 0x641311a054a449f0539af3b9e5e6550f98cda5d6cd7142f2e981431f77b44b47. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18d1057b-91a7-4004-8e97-2db82bb28242.json and https://artists.proofprofile.net/proofs/artist/18d1057b-91a7-4004-8e97-2db82bb28242.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 0xf16d76ce2161ce7596ab7bdbd8b9a4205f56d23c2a6af9f1186555ab729eee8f. 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/BRUSA0700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a384e77f88a0dbd7f95aa15c907d4b73aee9964796f8b6943fe9c7b3eab1523. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:46:50Z), 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/BRUSA0700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2d3219f552c34fdd40f1e265c0ba08f0d6387954e4067bab85aa93a0fae7a5. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BXNT61902775.
A.M.M.M (Associação dos Maridos Mandado pelas Muié) / Casar Não É Comigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159eec652ea7c61ca69633ba04f91702c225c8f1436637840470e2c3ca711e1. 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/BXNT61902901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bcbec9279de4f24f9a8e514e9ff88c003e9d22110c6e1457bfb1e27a08847e. 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/BXNT61902921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1645bb2881d5403afd4a870590e4dddd268d2b1a0e46b58851cab0b2aff132. 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/BXNT61902996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e558d0cc5c9506cd98662c5320467f4de8d2c99e8b6d88657f36373104ec471. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BXNT61903039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8eb4c6221aee82856249affda73249992f91eb2f8b818ed844cd5b8b1aa94. 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/BXNT61903042.
Risca Faca / Bailão do Herança / Eu Vou Lá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a63c1a08033277f0b439b80b03fefa34c057d8dd9ed33b2a98f154cd9bb777. 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/BXNT61903064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442670d740604de7b549c511a53b30c288729ebbb83305abe4475828d4251ae6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXNT61903105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7843529636eec2ddf15bf3b4c3e6921ff91014f54a68dc34447d4d4ba084fbc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXNT61903133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e33cb837f0aca8b3c9a1c54e7a2538b1df2f327399f52d1a9fea61b9e474039. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BXNT61903137.
Pode Pegar Que Já Peguei / Me Bate, Nega Veia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec316e0ca3f625f14b24b8e31d08749a4621ea94661951dc48498dd1902808. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:43Z), 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/BXNT61903138.
Gaiteiro Apaixonado / Se Você Quer Tome / Baladeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be4809ce56bd970b5673ba51eb548856236261fb2f65d0100cd11c39fb75354. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BXNT62202348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96443e0aa77a648a2dbb37affaa5f340ec8fc95413f1d32b72efef91924aafae. 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/BRR8D0600021.