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 0x5c8df64b43491db40e7fe26327a786e8baeb2efce6f83c2807d779b8f40c0b08. 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/d522a27a-dcaf-4ce6-a570-b115f4ca48b1.json and https://artists.proofprofile.net/proofs/artist/d522a27a-dcaf-4ce6-a570-b115f4ca48b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurrí Del Burrito: Llegando a San Rafael / Papá Monche / El Canto de Las Cuerdas
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 0x83fe508924380dceb4770a2806b529cdf6bd8b0095858d9cfe95076558ed011b. 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/MXH152500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b664e3d3bb45352a7929c26226f2e9c9ad67a59e98e7a9e335a3618cd13c630. 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/MXH152500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b38458be4a1d7320838cd9a84f5ce79e3aa6fde5a1f530c9efe3539babac85. 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/MXH152500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b67307e2ea74ab7983b745d514ed977fdaf70b9f4f1911ac3b7da6cc77e15. 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/MXH152500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29715263f4f34ab611acd218b207c97001f177b4a61ebf4e2e8824aec6f5f512. 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/MXH152500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d4e72d40a864ec1e846b0a05e355b2055c7fba5086e9bc9571168f8771579c. 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/MXH152500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b785874ca1e61cc0903493455f377865de2848e44a3a46bcd75690f412bf2d. 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/MXH152500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b90f15de5764962801de55ffb641471aa4d2e0dfdce37f5277935bdb4b9957. 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/MXH152500192.
Popurrí El Brinquito: El Brinquito / Llegando A Cerro Prieto / El Resbalón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639cd39d549b5efc07bd554bdb1d85dbb66d5834d0d4921925c2e7447bec8aa9. 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/MXH152500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b22a1a47919520349d24cb6bacce7fe240353b25c5647e93f4d1d01ab46c15. 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/MXH152500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dddb9c279f61b4684e91fb285ce9dd09b0337a8ba9c0b44f8da3f554d21455a. 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/QZW9K2288910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c0e57c2b1fe5faecb4e2d05aa15afa45b64f115ed362f77f4d1d0a71ccbc8a. 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/QZW9K2288911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5c014f2853daf4a31a66a0f0031f12859b47b11abdfc93805bdabc065abbcd. 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/QZW9K2288912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43061560377dfb3142127dce2d5b8458d94862e380b86578056aea4be41184c. 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/QZW9K2288913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad00b439ca65d888b15edb88ccb1fc03958bde0492d02fbd9ea3f7937341eed8. 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/QZW9K2288914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4732a3cfe1b6018276d435910fb6bf7a67d731fee10d5553d60f5a04d557691. 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/QZW9K2288915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f21400da346200afad8fae0288cf154610201d4eb32fd63ba9f75e26b85088d. 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/QZW9K2288916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5378133a5d8ebb814ede5ded4c73cb652bb1b838b25ef0d79b1a6a823f09db. 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/QZW9K2288917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30ca2a437b70627232556b37f7234e35250d5ca7adaa476e15c04d57573a539. 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/QZW9K2288918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c92ba48fdde8c6466858c41327899b7b2459d8f36e46ae8d0f6c6725c06792. 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/QZW9K2288919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc32870807c8253bdec80d04b01c71bf50c27f124c0f7b93ece924e569022b4. 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/QZW9K2288920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ccf2f4ba058eb88387b3f0deeef223fb92f0380e6c441951a4fc2bebc72abe. 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/QZW9K2288921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaad0b3dc62d6142b952f741e3e82417829bd1376eb953290115a9409d0b4dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9K2288922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b7c1d099f785ff8009a326ed00c1c591ff4cd977ec81a694f8febba2bab1d6. 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/QZW9K2288923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d26b1df2418749437c8e34fb80339aded6b7791e0d216f87b9241e74298bda. 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/QZW9K2288924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83258fddec49496c90999a7228d5044297c01ac06aa9976bc78ddb7fcde9de. 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/QZW9K2288925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f918ef4f91ee2e89ca80c3c43bbfa556f9e7971cea24ebc5f69a57ea88d2151. 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/QZW9K2288926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa62ab067a0a326463a9a987d89c4677279e1b54194883ff5248c4b57beb7994. 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/QZW9K2288927.