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 0x30c513e56c64886ee0725597e29dd31c09e9f7f7f6e5c9c6792bc96cc92f6ba0. 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/8ccf9972-7f26-41c9-b039-85e21d95bc7d.json and https://artists.proofprofile.net/proofs/artist/8ccf9972-7f26-41c9-b039-85e21d95bc7d.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 0x537330b8fbc4f670dcde69ed7126a25924336d07ad98026459d5d7dba2acc99d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ARF061500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542fe7655fc3081616dca11ad6855f5ae5b42d1c8b4b43eabe9c5b77bc93a0e4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ARF061500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c59c4ba2d75d9cc936d00458ec51b608af9c5f6896268f732bcc86923ff46. 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/ARF061500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa5d4eddd4b64f93e0f5c2a8b9a4bc771419b922e1c49cdb1e0bd172b64df72. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ARF061500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1251d82341346eb19530f31ffc14adffefd994fe747adcd516a216bb9700aa38. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARF061500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1fa5c50f5a96cf7117d525e57d1f278681e05dccd6637def82c4b020f0bb2e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARF061500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac9ce7df64a76183492e90f2bfa0c146fe25b542ad7eb7a1128782c1a183202. 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/ARF061500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb5ff1df03303ffc7d43621f229ebe8948861465c538c7ba6155464e9ad94e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ARF061500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce65dd9390d3f592fe2d486b3d996756c558eabb0abca6678d9b1e7f0cbc6f0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ARF061500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b3c9eec3d253718757229bc5422dd7a2efd554b755d7853287bc6b8b7419f4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ARF061500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3be9a4765129d316e22bcd8c70feab63441a1f8a814d9851e70e8c635324e0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ARF061500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4275aea1978f332551281457fe86cbc540bafee07531398085dfed214a4359. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ARF061500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb7045ade78295545315b7a39e23aaf2bd62cd0f90281fe2a8af8c2987c4e3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARF061500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9034d4be22971111d82f404a932d719776411b30632e33bde671e0a431e39. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ARF061602219.
Wonderful World, Vol. 1 (Live & Acoustic Collection)
Wonderful World, Vol. 3 (Live & Acoustic Collection)
Sonhando Juntos / So Right Together (Orchestrated version)
Wonderful World, Vol. 2 (Live & Acoustic Collection)
Playbug's Lullaby / Bonequinha (Playbug)