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 0x2000c4aa34bdfc6a0ad06bd823095608a9824e2b385fc90d27f3586c8ddf16b4. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3df48d4-455e-4f24-8b81-c530e074e0c8.json and https://artists.proofprofile.net/proofs/artist/e3df48d4-455e-4f24-8b81-c530e074e0c8.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 0x1bb847470ac3b804b4459483873c62451a3494d0e1c98158c9650656c62cddd8. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBDCR0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785d627893d753e7dd24dee7704dc8d062050512099e90051736590fe5fe5421. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBDCR0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f340214571493ad2f6daa02250b6e665c3d4e45a0cdfdc573f4f7ca452d87fc. 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/GBDCR0400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7c66726545acbdba2f36bdd3d334a90acc03ffeaec3c7d1b6f5f5794fb26d9. 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/GBDCR0400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d604872384128312511e4010696f48cf8e7d6ed1e78567fe5a507e4745277f. 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/GBDCR0400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613887251af617aacabf2697b9db5377b98a7717019e78d25336847d1c20ebb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBDCR0400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f412028e72d56604830f149bb0be96c23b2ef029a6af68af873d61e0d9e6b7. 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/GBDCR0400255.
Misturada 4 (feat. Kyoto Jazz Massive, 4Hero, IG Culture & Kirk Degiorgio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730afb70ba7d285975348e23507da660eca106ee488d87709bfe9193b20b3443. 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/GBDCR1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d34324f17450affe101b6e5e3ad38e460f16f9486b241814644498e35fa334. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBDCR1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335484739307364695799d45512586b46cfec77decc6e6cf34266227ca1ee37a. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBDCR1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6e750d8cd033c4f41bbb195f9b2948182d383a82c37125dda6cc4d398f86a8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBDCR1400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc552464d4b4d9429ebee03f88c2e1405b15a5481eec5d64db8d00b9cc7cc0669. 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/GBDCR1400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68809e6bc8ddcab69fb4ca12c3573ddbdb1d2451f11f4390747f2aa6925857c0. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBDCR1400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d66f991451dd45a1fbb31a13699ad7975a18e0b28b5134c4dbfbef64d7712. 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/GBDCR0400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bf79b7ec66bf4486be03f9e27d60822963331c259748e28fb6ab806a060ed4. 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/GBDCR0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd32284dca67e9c83fbc23e7de6ba14fbbf62fe6841489ace5a47910ab7153f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBEWZ0200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d66f991451dd45a1fbb31a13699ad7975a18e0b28b5134c4dbfbef64d7712. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBDCR0400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f412028e72d56604830f149bb0be96c23b2ef029a6af68af873d61e0d9e6b7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBDCR0400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e518ee88ecc6bda8ea1a5252dbcbfac03a4dffe6ed215af1ebed22b6b544bd. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBDCR0400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ad51ddae18efe4f55186f7dd6ec1ad16637856c3c6e061026c3c6eeb4a086. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBDCR0400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421b1e0edd4089280d7c7a12b2b785fa43a7c170d749cfc8b7298f6872d014c7. 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/GBDCR0400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef80e315bd372b13a2c818463ee6ca620bc503eea67d9ff944c33f456cd788. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBDCR0400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7973e946f09d44d5619df5b41cf67043b9ecda783f69c6076dbd18bd5e420a87. 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/GBDCR0400193.
O Aperto da Saudade (Heartfelt Music From Brazil 1965-2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f805116e473a477d9865443e875a0e34d37479587adceb5f02f766b8d3897. 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/GBDCR0400109.