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 0xdec1f5bb85df0a9a253b78461bc162239528ef64c287b4c145b94d1fc86d52c9. 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/e04631c4-ab6e-4d82-8d34-3a7d0ecdfc5f.json and https://artists.proofprofile.net/proofs/artist/e04631c4-ab6e-4d82-8d34-3a7d0ecdfc5f.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 0x403bd4b21be76487bd6e76e94935d436f8f157755ce6382056131ecffd00a97d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEH742228085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c39c1cc9fe09f0085b5c44dbd42896eac251e91bf05de997e1b00a581352a2. 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/AUMEV2528769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569c54dde2910d4e044bc03816a3f358ebc09062cf15134c15bc65a6f70727bc. 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/BKBEM2401186.
Take on Me (Raphael Siqueira, Callil Remix)
Take on Me - Raphael Siqueira, Callil Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a069ac05c00dde23ce13e66f858e5632a7c6cc542452bef15d293daf16ea64. 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/BKAVO2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3d1edab9f96310176f8ced00b91c76ca33c1bd88252f060e9c8e862e1d05dd. 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/BKAVO2200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00376ead5c92f057292eb6e27e36621bd0f29b0832fc70a04f3e57f195c00f4c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEH742228083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c0cb960e167b8a5816160dfd9400cbf302e4bd474250cac42b08d63bc5ab85. 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/GBLV62132652.
Cheia de Manias (EME E Raphael Siqueira Remix)
Cheia de Manias - EME e Raphael Siqueira Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68974f4818b5aeb8d866e9b588e4af6c98f817d52865099f6bbbb3ef01db8dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX8IM2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466bac3f477c1cadba3968f6e6c2b1fcd1319583d91002345c0b62afaa21b3cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLPF6668007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099767eea6f3d898f409a711ab373e75226fc3ec61935a68278a4f2fafc2695d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBLPF6688159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa06b7af225e5b5402e35fab7053a9370d4977c464a41a346732fdb761d69965. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXIED2100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1d770b3edcb5b4b3545dbf8e9af3794ca203e6e835bc29f7a51a8e3bb5c3a0. 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/GBLPF6671220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a1dd8fb79ef8b408f8fb86c2348257208011521c75eec4a8309fd65ca53d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLPF6670983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49af751f45ac1e9093e719f2dd966108d27bd04297897c8397dd42ad3a85a06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLPF6670445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14188e2fa3e5997713ea88375515d8aff91b0b28a026d35e9cadf62e88d9c4d7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLPF6671219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0371b341378a1864cd843f69d074049e2a20fe76092ab04bfe01cf527625721b. 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/GBLPF6669563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8990e84897f94d22844b70f3fb45b2124548d0a3805a2d7fbac2e93a104017f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLPF6669889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d4e1091cb2f44c9a2162bcbd4831672575ed703040f34f1d55177d6cffc92d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLPF6668363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482304addca897a0f7ef2b4e444ed6378e6ae5fa6a00fe143afb1fb8e2bde297. 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/QMEZE1783730.