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 0x220a61cb1412d049895bd2fed54b6200c30a6234a104560891519a97fc13d2f6. 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/276ca386-e551-4ee8-bd5d-ebff2e892cb9.json and https://artists.proofprofile.net/proofs/artist/276ca386-e551-4ee8-bd5d-ebff2e892cb9.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 0x237fdd5128a47554af0decf1eebbfbab9bc43ffd9ae230392fa50603b8f09cb7. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:14:52Z), 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/USHM81897433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f46265b90d85851d3d1047f94d92ab6c99cfb1b1099d7fd213ab7737115f2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM91882609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c7b019cb9548d3ccd3b0e3ffc82ad12515bd203a2c29940b2e9905cec5c12. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:05Z), 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/USCGJ2039654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5485546c9f2ae8e7292576e759ecd2c616300c64543b087b2d5bd510d1b878. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM91882696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d0a3527fcb368dd60e2286196d860634a71786016bff036e428c54c4a0b5f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM82169819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1da713dac6ebc95fdb903a0259a4fc4f01567f79f394a48080ad88234e8802. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM82169820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad7b5ed5e7effa24165678e6ff6a36549dfe30b6df3cdf7d7446e4ebe24b6f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM82169821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035eaf9100a5b4177716bf5609f2f4ec16bc99e5ba77e32ea13a54dc20b5d144. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM82169825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4bb0a84bc2b2733e33a513aaa9de74614a98872560fc56cce53cea79b488e3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USHM82174544.
Worth Every Note (On This Christmas Eve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f14ed988495e15997e6b7e0bf0c5c8338a4236fb91fde5749b6c766e57c554. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM82252267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f4679def6b4bb8acecb1ace940056995ef5805afcf0204c221d47ce298edb8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:39Z), 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/USDY42361435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0856402f63c19157264b0640fa3335c9f20c8bfaab526bb1c31a9a285eeb2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USL4R2303403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16be515a2cddf3bb09626398ecc19c7d4a3621a56a909a1faa43db5d1120e1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4R2303686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0856402f63c19157264b0640fa3335c9f20c8bfaab526bb1c31a9a285eeb2. 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/USL4R2303403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df6407e470151b01d9079107374f33ab55d42e92d01af7916ffc8829d06ada. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4Q2420951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319f5fe844398da53100ffcc4640e1ff09d4b6fab1c470d74038bbd088eb0fe5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USL4Q2420961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab2680f55bb06d1c6b17e26ed618ec520febc4ca329ab9e3f39bba1f2e97738. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USHM92484531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ead8ec3cf8b50280cbb34bea1e69b1d30ff56a242b7297108cbb00df9dd654. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/USHM92484613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8072c8c24594e2ff0923344e32d281c970005d39f7ee7e82ab22163902a79a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:56Z), 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/USHM92484614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742ccb7ae3a41d6cde427fb200b9649a81f1f4e6b8a1c3261637717745daa636. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM92484616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46683ed937cb7600317bdae8c26c59ec8b47ecb18b40869e4b255a8b205dcd16. 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/USHM92484617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e2beb4c90904ef95dde67a7c64961088977fffe109fe8da84462cdad2490c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM92484618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929cca6c5c67ed1db7705e74a99d9c0a3f1e408e1ef89e66eb87b75cdba876c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM92484619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e9bf6e0bb08f74f8354f2df6d7a58bc7085d3f77aaa9bb1afe766dc1781d18. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM92484620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6859685247ed3bd59d35c4543ebf23fe2898ffd7d794c4a488ae8acb9fdcab1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM92484621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba6b7a5427d035e622af16bc7d7244a56818569b3728d1015ad2d792b1dd15a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QT3TB2407892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b9e471811649488af0704b0dcd4f501ab558c4f4b7c3061008fec34ab97110. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USCGJ1622951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd68ab9a6c1480192b3905ec701ffe83f6ec634b5425ed31ecad2479fb0fd52. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM91882613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9975b22a0ccd9efcdb61ff3e4d44f60beddfb6d1099691c3abca457941350b97. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:21:58Z), 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/USHM82169822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d0a3527fcb368dd60e2286196d860634a71786016bff036e428c54c4a0b5f4. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:18Z), 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/USHM82169819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1da713dac6ebc95fdb903a0259a4fc4f01567f79f394a48080ad88234e8802. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USHM82169820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad7b5ed5e7effa24165678e6ff6a36549dfe30b6df3cdf7d7446e4ebe24b6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82169821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5485546c9f2ae8e7292576e759ecd2c616300c64543b087b2d5bd510d1b878. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:08Z), 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/USHM91882696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035eaf9100a5b4177716bf5609f2f4ec16bc99e5ba77e32ea13a54dc20b5d144. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82169825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0cf5014b479377b24bf7344fcfdcc7311a2e688fbfbb543855d5355d041e1d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:29Z), 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/USHM82536803.