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 0x4fc843aae01f5f1be7604a2374a6a73f00fbe5aa08db63d080e727760f0f1eda. 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/7bcc79b5-e761-404b-8771-49ac00af8add.json and https://artists.proofprofile.net/proofs/artist/7bcc79b5-e761-404b-8771-49ac00af8add.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 0xdf8cfee44661405734b27e6f3a1d7c52e9ce910d620fbb8f5cb78d236ba6056c. 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/SE6QE2280715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e19dac49d7735c1b8d6365a74f3f015f797b233c311064ab58bfb6801167be9. 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/SE5752240975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61db94a2215fb4e60cecab0710b167c611a5fd76188cff160de1d25893e93e. 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/SE6XX2174166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8156abd422bf5ba949f32755c6c2b2a26efc59df15b55f6dc22d4a4aff5fd. 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/TCAFS2189165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78423ad425c577d3c0f1e2f56a097ececa7cd3c2ff970810f46668ab9425efa. 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/TCABM1302014.
KILLAS (Ritmos Yunque & BaboonEstudios Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9fa4162ea9ea9204437bc29b0528d475b0ea3702f282a5ce0a36139cd282d6. 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/ESA011789775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09802833bcc6fbd868eed36bc5432c4f6d1827cedb7aad79fba066ba910888. 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/ESA011871483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4346d7d1d62b09198c68a59dac1074d66717c726d652a33b159fdeaddecf448. 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/ESA011866363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9b276363b2283908feeaa7694a66147a41ad444e8a5c2f32be5051d8cf20b3. 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/TCAED1940301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44ff762aa0c68c7b53fb0dfabfde07c00c7ea7612cc303717b981fc4b8433ed. 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/TCAED1908129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc462bb014b0a1bae6c7f3580b312c738bbdaedf4b88d02f4aecd923d5f963461. 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/TCADL1811682.
Km.0 (feat. Marotone, Charlie, Juancho Marqués, Ceerre & La Tapadera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368437d21f575f76b31e296517b13ed9a407473aec2653636aa978f724283a6. 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/TCADE1736366.
Hey Playa! (aguanta) [Alternate Take #2]
Hey Playa! (aguanta) - Alternate Take #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92629bf720b7225c43234ca9615162899a510246bb187dc013484b7415ef3d6. 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/TCABF1229527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46958a4b11c5d19ab477b6e638a425a0fb7d3af4ac1f5240a8e3989add482ae5. 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/TCADQ1843485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82e50f1d2c3cf64da2b9683a32c904dcf3bcfcc26c52c7064e6645d54e043bf. 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/TCAEI1907711.
De Principio a Fin de Mes (Manifiesto 2)