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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75751a94cf7fe86c5805bd6adcee0bb3748d0e5e48933caf38e0d781d20820c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/965dda93-7464-4989-aa12-eedd0f2edd5d.json and https://artists.proofprofile.net/proofs/artist/965dda93-7464-4989-aa12-eedd0f2edd5d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9808a9dd61842b399ff6a9e0d4ed4c811188bdd0da544659f8a07b8826f1d089. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCACW1610923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969754dda69bea5bfe6db828b367ff589c8db0a3ae53bf61e1f3c8ed6b360c06. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADG1775925.
Vallenatos para el Cora: Obsesion Mi Estrella Niña Bonita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f7eec2e389779c2c4e9a8be146d5dfc46553a66179702ab37df7e1f0ed02fe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCADR1852787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce849125490a5541ed700eb70f6160bc0107bd36fe93783c10afdc7ab9197cf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADU1827016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2baa4a0acb9832129633f43ed4e3d51e82d2c4c0d80c9c0312c470b04b4d5a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCADY1857298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef64c7a8838f5b92ef33c663fc4e01025c6b0ff3b8bb71fc62df1f7eff7a505. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:29Z), 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/TCAEE1917557.
Soy Campesino Soy Mi País - Yerba Mate Campesino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e988db36a10ca99b170791ad6ddc0f2e329d352d58ef12097fa7d77b0cc1b86. 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/TCAGF2292357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14787e98fa96da1f4fe6985da417ad559ff06273528e9c029bf6771c23ff3665. 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/TCAGH2226084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372543e4ec4e633a1a81842a96f7f662cf195cd5755fb10cf2af2e0558143fa7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PYC842200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674fe7c18b795ba237b1fa1d996832f1c90d469aa81cce75818f43c1eb9eedd8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PYC842201794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8104200b81cb16d96020fcb56c443189fb03b09dc071bb403ad509cf2b639965. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:10Z), 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/PYC842301843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d3ffa7561835a80a594eb47d530f35b7699a0a9f5d7862e0ee4a9078b3ea0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PYC842303718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c147ef82d13c1558dc0283fe3c8d6e8abd1955250e52a1f009f7c625811b81f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/PYC842303805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fd7ae36a0b7cc7f63a6295732806174c950494acd9ca9d681750d8d45f57c5. 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/PYC842400399.
Primera Cita Se Nos Complico (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbe3dfafb349ca0ff038da1c40ca97a12611fe1a8c150cb4826fb23f309c614. 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/PYC842407488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f68d276ce1261d2c2598720e1f1fb799d402aee1ab70a90cfa475347bb96a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PYC842409949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde64e3f0b8700991470991b1649c663ff4c4590d14e0dd90886780a2059bd51a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/PYC842418149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3253b4004eebc41c178d33a027bd2716ffc86185f088666be17a6f3c678ee1. 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/PYC842420914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d77071ae317332063fa094fbb3ff56b0b0042a8a6ba537ee6b7fff067fa9a4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/PYC842506679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae74fce0e69f31f023ca9d84423446a14e5cca0a299050cf287b3f00aef952b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PYC842507878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98165c72bace7c55bf96be080ea826cefeb65d30694fedeedf32bc54a4b2d69. 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/PYC842418254.
Recuerdo de Ypacarai, 70 años, Intérpretes varios con la OSN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc01b717ec867956db1454dbbb2f1e174d7d07ab36c02953c9937f85770f4dd. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/ES18B1901258.
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