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 0xbba1346df3c1b2bee92541ef497dd1b5cda57d3c9fc8590063c5d9103444ba06. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/844ab9e8-69aa-46e2-84f8-d86fd447db62.json and https://artists.proofprofile.net/proofs/artist/844ab9e8-69aa-46e2-84f8-d86fd447db62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Νανουρισματα, Μουσική για τον ύπνο του μωρού
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 0xb197c5b597aa778695f129ba127074551b2e336875414e68dfae2b20e95ef942. 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/TCADQ1835992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96019292e2e361eccccafb3cde8d142c7f14536c1dde070dc6c9646e700d840c. 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/TCADQ1835993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512060689596b0566c7061aad84729322633e5e39ee0760656eec7abc4b3119. 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/TCADQ1835994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dbad70d81efc26f0276a8387c18e87f87c391a6c6c1d3fa6ef3876b8ff0e1e. 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/TCADQ1835997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb3cc2aa73e918f2d35070cd5573d1e9434092164bedbf824e4dd05f1e91e43. 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/TCADQ1835998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382a99ba706a9493d77a2191eec7a72a13d1495acef61a9dcdee81668f183655. 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/TCADQ1835999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e8e448de1ba835a8ad8ec8dd2a165144103cafd8b4f4e02a90c4244705cee0. 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/TCADQ1836001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a706d26ad67903309067a9ff309721de91d7e710d397ad7700f66803398dee. 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/TCADQ1836002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf79e2334f2c36163f3bbb52bac48e38859156ca7dbc0beb28ff65396b81f7a9. 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/TCADQ1836003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900b2cd55155026737af031bcdd50acec315c6fe153beaef3a7f5d36ba001a4e. 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/TCADQ1836005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c839326b5922472c7c9ca8f9589b2743b17a4c65149c511331a8971ec61ea4. 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/TCADQ1836006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ea6a80a2b31b5357300056ca92daac0c6e703cb6330e4bafa47949d22b5ae. 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/TCADQ1836007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48313f2f36bc8bffff7a9b7ac6487bb3a88a366fd0a226a4be181de4e34a0cc7. 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/TCADQ1836008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa849632d42dd90b4fea1ef018620240c7e143496d3a31ab563a5e2c740bbdc47. 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/TCADQ1836010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa056544090162b5203f406578106c0a00b1bf3f6580f5f28c25c7f80484845. 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/TCADQ1836011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d07167e74bbd4bbdf11bbdedae44a0aaea222c26caa444689f39903201c0a3. 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/TCADQ1836012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f722337374e14982d76565250818413597d9bb91d2d5c0fbbd0930158ed415. 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/TCADQ1836013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa024aef6465cf46d0e623e64112e0ec03ca34a79e8eb3efc77077e9a60c08cf6. 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/TCADQ1836014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da14edff25a0a216803d18128cd350ce5913707a4d49081dab92fc08badb8b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADQ1836015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602d229500ac5dd785b930ec52d6b5bfff3c50bac2258144ea9822d40d66031. 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/TCADQ1836016.