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 0x2a02648d495bc5d006d7247d8660f1719951ae42c7dd2e71890d2460e4b5cd1b. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/146fc0c9-0ec8-4129-a840-fb1e318c1091.json and https://artists.proofprofile.net/proofs/artist/146fc0c9-0ec8-4129-a840-fb1e318c1091.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dos estrellas le seguen (romance a 2,3 & 4)
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 0xc514f5abda36beacc4c5dc267a364c04b4f02906fa881a92563b5765292a1772. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BEE641416905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bda565eaf20b56bd5230e5ddde9c2d09fae520fa7bf0b552aa9689da210e6f. 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/BEE640800418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe8dbbc2c5e94ff7c6fec2ad2e400a5fc8e580f5ab9e324ff8acf9633cd03b. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BEE640815616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace3204f9b926880e1b17ff26b670f80f72c64938c921d11f7476588a6901226. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BECA22100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84811278f826cbdcb0e204e5c6ec189e1a44932fe02d1e655d5808f8d4c410e6. 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/BECA22100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ad01fe9edbd07376201226108c0155b7b03d3ec07e5be5d4105402ab74d1e3. 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/BECA22100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ec4badde724f5451736292a6db0336785eafe478daada8bcaf88c286407056. 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/BECA21700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5253377a9c43381e5d7b15497e3606cb25e4b37dff294b3289dbc472e6fbd8f. 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/BECA21800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89473590a4d08aa063d0a2822daf6c2d43c61ad38838b60c700bf038008f401. 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/BECA21800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ed3c2f53dc8990e8b8f1321c250a7b75504a95ed225a4ab2bc88f2780336f. 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/BECA21800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023bf0968f628f748b745b1c8d222254b2c4c6d021efd4d044b89f2bef5cfea5. 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/BECA21800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e2ec3333c1729091ef970878fb59155d8961c3e7f1073699bd196e86b4281. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BECA21800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe098461d3710516980bca975ac275ec0f53c599f098d835ec3b4d5cd665bb87d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BECA21800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd093648df9de4a4d83a528feb8db514a2caac32a9949555fe271b42780cfe5f4. 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/BECA21800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058fa444450d1fdadc0b6dacbf7c1ed9b13bd2c471df40a0fd0de4af4a16b5b1. 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/BECA21800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbfffdd234054b2d3684ac34f4b16e2e0974a2f5c3ec81e60872a2428c61d01. 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/BEZ250719601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9736a35d74bdc5643650e25941796d505fad902334a3dbcb0bfdea1fee86b51. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BECA22000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5253377a9c43381e5d7b15497e3606cb25e4b37dff294b3289dbc472e6fbd8f. 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/BECA21800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb1d6f1012ef1f69f45ca59a83df886c1b27d53427c15199fffba9a3b78c004. 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/QZFZ32037960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc08403331c24cde5a66e07dcea9d57d40600697411695fa43c81a80de27b28e. 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/QZFZ32037965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec557a6bd38bc6b718a4fa29dc09859a1f42c38c3ffb6c38b524912ed82cf9fc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6542464902.