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 0xbf07e77472951709ee2107e2a909ba51625505e816f1d364571ac700e5a41e8b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/554c04e1-b721-490b-a98d-8e7cb9d71046.json and https://artists.proofprofile.net/proofs/artist/554c04e1-b721-490b-a98d-8e7cb9d71046.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 0x1a95d47712e5580321ee93325639475d4648d9d272e707208da40dabcb2c0f1a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:18Z), 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/SE5BU1939267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a3d1522dcd30dd946f348911d084096b0f5a8fae3b280e62c69645a8495333. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5BU1975078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87087da4fd758c121adadcfdc36818499096d50d6a06d92fc660027e9bfc37f4. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:40Z), 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/SE5II2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fce071709ead6f3ced6f36d5b4e04ec194bea04ae5829f571feff1a41f3ab6. 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/SE5II2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506ff4944782d61aeb97236ddfd069d45f9359964f42e6ec2cd65c184e0910a. 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/SE5II2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d9923eadff6afe69981e3f7b4feeaa924f8c65a2f2d7f2ac52dc0e2157407. 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/SE5II2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d2b695bf6245699d45ccc4d9263daa0f33c5570e0f10a88719c70fb14a62e. 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/SE5II2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0347a87f0c1ce0345c74e3e37f80648a8de2e2d6621c34483afaa440343586. 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/SE5II2201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862fd1831d334087172835ffbcaca4f8a49c5601110b02b165697962ee86d50. 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/SE5II2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf606df40c8e5b92cb533e0fbee63d44a57dfd215fac871c1e491f91caf10380. 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/SE5II2300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd1e49145bbb208e06fb3c80466e38977aeff7be139c6f0ef116ba929d28f2a. 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/SE5II2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fce071709ead6f3ced6f36d5b4e04ec194bea04ae5829f571feff1a41f3ab6. 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/SE5II2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd10bce204f60ba35ca18b74556ca8bceb4cfad78bee331de925a028808d15a3. 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/SE5II2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0752fff2709506def591fca877b05ac2c2f4d693a706a2a8538186e5b7182803. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:12Z), 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/SE5II2300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52872336afb09935345580786afffc2a96192653e199f887858b12068773ea. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:18Z), 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/SE5II2300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a66dd235c6b9c630fe2a40ba9d5b1306a896efb4bc9b674ceca4258e5c4d90. 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/SE5II2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e683af5a847ed89366d9a75b0e22cae244f190a145c0c8687d6bab77084f149. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5II2400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e86087ad6ec66e87a59514800dc005d920f17c41ec00f04139b611c2d040cc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5II2400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff704d4abefc11a0426b26f8a469893ec0eeb8dfd4999fd7a37ce100d3ac6db6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5II2400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01080fc223242e57e97d6f967c307d43bbc26b567b18153dbec27ffd8d08874f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:39Z), 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/SE5II2400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82af88d999616ebd69b0213fd507ca68a6b17f86d8526990002dce0559d87263. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5II2500503.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0673e93deed608da60165d05185677bb96a3280379cbbc0a53075064aa1f50. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:05:18Z), 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/SE5II2500506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c09e2e3f345eb76ab5e5b1123f141034c530f2286fe9b2191f5fec6485fb1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5II2500508.