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 0x056807ad6e6ee64c944561cf87ecece44e632809d9e5d9b74dfef82aeabe385c. 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/3b162ed4-1cc6-4405-9d3d-aef035807783.json and https://artists.proofprofile.net/proofs/artist/3b162ed4-1cc6-4405-9d3d-aef035807783.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 0xa0d5f5254f0569a6a8103e56abd9f3883accc7d5ab5db8441880a18aab8f7418. 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/GX3HH2429639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a353793634cdf3cd5e0a1a7045866812071c3ffa8c643c2fe1987a68f2877cf. 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/GX8LD2429486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303891edeedfedc62e49014140b47236ece14200966e77c6a33bd1018518e201. 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/GX38U2412616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43327045df29525ab36c60ccdd3c5db832c82f8b6fdf9f4410354b773b0823. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8KD2446400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849701af87be2c725c14ece58cf0daaf91f9b93f0efde619615e80681954f9bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8LE2448109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84fa75750a4def375245942beca0c44c30151c657ba49c9a20ed6d718c9ef6. 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/GX3HH2464735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b12ae87a8b8aab674adc75967db3c82178b78686aa88fc783ca3336cead7e33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3HH2465084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf078bce8694fd5651b3b3e886e3fce3f2ec75d131122af5264b19bd5f0fe14. 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/GX3HH2448127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde774c83d4e21b3220059c508a0a3e6e2635057d185a0c421d0092d67b7c27dd. 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/GX3HH2473868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9969b721a9a6a981530d53141aba43957ad10f9741d034d4b1417470726910. 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/GX3HH2405395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdb00f4ee3bb7f31915a44f070c2adef213475f890cf00eecca2c12437033b4. 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/GX3HH2467951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9c6c1a10eb1c52870f697489518177092897444da9244a8ac955491fbada60. 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/GX3HH2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba2beb19b67a43a01b98dacdc39315e90de1dc290b69fec18fbac40f6ec218. 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/QMDA72174063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35aac9a937676209174277dfc1badec852e1e824326230ff90720654ffe81f. 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/QM6N22120564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af0f7a5c344b1c528eef7b7316b0fee26e1528b19baa426865a9b9b4c2822b. 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/QMDA72174066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb698767c7512b58d52b6657d89ccfea575b62561fc3ad7662e747401014dc2. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMFME2174760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d68533cea92dc3e0990c7d2cb083999ed133ef5565e2ca2f75028d0d3c4b94. 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/QMDA72174067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c65316d38d873103000a262378fc4a55cd8f17276d6a3924ae5370fa35bacdb. 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/QM4TX2280140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8574b7305dab6ae6dcdc12776ff6b8225cbcb50c9be0212c6b47e928fd089671. 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/QM4TX2280155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba2beb19b67a43a01b98dacdc39315e90de1dc290b69fec18fbac40f6ec218. 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/QMDA72174063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35aac9a937676209174277dfc1badec852e1e824326230ff90720654ffe81f. 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/QM6N22120564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af0f7a5c344b1c528eef7b7316b0fee26e1528b19baa426865a9b9b4c2822b. 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/QMDA72174066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb698767c7512b58d52b6657d89ccfea575b62561fc3ad7662e747401014dc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2174760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d68533cea92dc3e0990c7d2cb083999ed133ef5565e2ca2f75028d0d3c4b94. 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/QMDA72174067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303891edeedfedc62e49014140b47236ece14200966e77c6a33bd1018518e201. 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/GX38U2412616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849701af87be2c725c14ece58cf0daaf91f9b93f0efde619615e80681954f9bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX8LE2448109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a353793634cdf3cd5e0a1a7045866812071c3ffa8c643c2fe1987a68f2877cf. 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/GX8LD2429486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43327045df29525ab36c60ccdd3c5db832c82f8b6fdf9f4410354b773b0823. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX8KD2446400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849701af87be2c725c14ece58cf0daaf91f9b93f0efde619615e80681954f9bd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX8LE2448109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43327045df29525ab36c60ccdd3c5db832c82f8b6fdf9f4410354b773b0823. 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/GX8KD2446400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6756d335d1ca27195538769e8f648694419e0341c21f2bdd28003ca4daac6033. 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/TCAHO2367641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83780721df378ec1249162cbecd4a454dfc12926f194305cda9409352c600241. 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/QM4TW2336446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb698767c7512b58d52b6657d89ccfea575b62561fc3ad7662e747401014dc2. 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/QMFME2174760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb698767c7512b58d52b6657d89ccfea575b62561fc3ad7662e747401014dc2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMFME2174760.