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 0x6f9e53e99c89c6b6ff0816408c0b30338be519567b71c2b1f494f0d66098634a. 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/17397e84-e690-4b6e-9472-474c9e476921.json and https://artists.proofprofile.net/proofs/artist/17397e84-e690-4b6e-9472-474c9e476921.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 0x9c711770b08e99443369392715f46ba7e6f92493b18030962eb14ce6d98cdb2c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZ5AB1622958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9322c3ddb86c07da79432d6dd2b6f9051dca89c1b8ee4833711fad28882e8b8d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US7VG1765813.
Encontrarte (Puedo Verte) [La Gran Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a8c530c1a45742dceba97cfad7fd64ac2cc50d523e054763b0696295151fd4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZ5AB1900912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b21fcd5f8c5de08009ddb0d6758ebcbb888407e27b01bef011139acb666bff2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP1976229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b12d0ea4fbfaed0494cbb81e82ac2083f76802466e8e510d5d4790c3ea1178. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22037803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f2954e5ab834d8c12f4f22dd425f9b33745440f9df25d6882cc93286921c52. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM22014552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025dae5db6eebe9ce1527e20771395b5b28863be7c456380f9c20271dbe339ee. 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/ZZOPM2104271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0de7ca86550239ec701dea53d65ebb3eb1f944c6077f39703a15b7a5d493e3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ZZOPM2236365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c907437970724077aa4311db70f03635a90a65ef533fe4edf036db88ccd12f0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BK4DA2303473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b96a5c4edd1040e640b569312cbadded6dd4e3d51a2fdba560bbb4b322d088. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/BK4DA2312763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa662bfb9cc0483be3b10100ac8032aa8c52a9333493229c0873c377f2979c94f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BK4DA2315866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137641e7e2e7a73b8c802d17473e700de0b6134b6a098e1823698bf2e94bc2c4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BK4DA2319227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba627e266a8e9d4e0244f46bf5415ac202807b1d8f1d2e2c5452fa155c24a39. 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/BK4DA2320726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207574d6a2ad719c9d84cc591e2a19e9abe3159ac7b9e502d53b2e4d94c7a987. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/BK4DA2322428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a528e2721a6788c292564237e9e4098ef670877b84c07e2ece08454cd95bc3a. 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/QZDA52109170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501e3446189e852c8a475d55edbf6ca7d0b3e5ddb0d37a1dd2ec08eca37a617. 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/MXF012400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d953ca3ea5eb0a42e662b4238d4c1ecdecd03a3c0c6f8adb4a31128af76d71. 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/MXUM72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad993034117315fa29233c63b1f245c9f13abe2f44d34ff0c4616c65795334c. 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/FRX872128072.