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 0x0a4b807a47781387ea8b6c906c873a95532e309e5d9e9fde8cb7cd76013dd893. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5c5402b-140e-4d30-bee8-5a7cc464e5cc.json and https://artists.proofprofile.net/proofs/artist/a5c5402b-140e-4d30-bee8-5a7cc464e5cc.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 0x851f43f670e2f3bd2ec50392dc277724e66c93d1c4f0dfb4fc7ee98ffa058be6. 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/ES71G2153828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6857e5615ecf037124b453015fe373dcc8cccc912eb861bf07e24a314ae8920b. 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/ES7701500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d4601ed92d951a4b38e759bb7a59ffb9c935af2b2702fc6df198bfa869ed1. 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/ES7701500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a89fb85bcd15791792ec0c6213f1aab8552321494cab6e936bbc4781e58812f. 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/ES7701500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26da0ba2c66ebc33af311e1adc7f5fcd15ce22acddced4d22f198706ac07fa8. 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/ES7701500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca882fd201a3c05b240ca9114ab209f521685c1764622a6ca5e4fe85a5fe255. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES7701500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7b7b93ecc8dca1b646652c4cec0de96e4546518a3b0f2258388f3b033add05. 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/ES7701500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c758d048a3a9a49caba17d26dfc083af49e957dc24e18149a13b27cdd00dddd. 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/ES7701500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3851efb38df95a33edb0d632d5714672e0e4e22d7260488beaa00639f99c9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7701500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacadd16ff81dc4e1154f475a232f00d0f42e1dbf482a41f8259e08d882c0b94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7701500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84cc7529c879c3a7efe32113c277d7b3f740e8dfd3acc5bf7168a787a27be32. 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/ES7701500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881a6aab941a2d2b17eed2e9c32b58719381ac88710164bf4c7f8689f257e8ed. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES7701500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebc305a62a5b89c12cd46b84a1565f10ddaa672665885fbb0150366e5e5fcb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ES71G2414881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b8b275423bc3102d46b535ef6b7a7a87279b030a77fa119d496e24140cecf. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES71G2318895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fe40d6003639b8aaeea2b0fc540529c925bcfb371e0e1fa2ae0f020efa579. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES71G2306794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f27895dfa69205313151acdbe14b7675e6623b3da354f0ad3ac166743ea692. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES7701300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d423523872f22924ee1107e178eeb224daaecdc770d30dd7979402037b12485. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7701300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95457e643274e9350598f353c1d7a67d30b89063b145bc6931e005dbd1f47548. 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/ES7701300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d188ef634782445124a732dc3d255e9553fed33898c263b611bbb8800878ac. 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/ES7701300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff9415d264f31efc3159f0fc8569b39703b52803d327f2276e0c6ab49277ca8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7701300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3fca080f05383651714e9fab587acbfc59f133db8dac415dd0c2fd561c8f68. 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/QMDA62186821.
Terra (Live) [feat. Nao, García Mc & Dios Ke Te Crew]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a00e28b9444ef5eddca5242caa5083049785388c0133c87d8a6c566595b1391. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES8241624015.