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 0x84a1cbb2dbae5e09079ac7c834306ed94ad1df96e8672611b4ccf3b5ad9bd8a1. 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/be9dfe44-d947-400c-8688-bfc5eeecd634.json and https://artists.proofprofile.net/proofs/artist/be9dfe44-d947-400c-8688-bfc5eeecd634.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 0x114a740da70cb9efc1eaca64aa90c7e0c200c0eb2dc250ea2bf8af698e4114c7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCABS1379668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0cea83e10c460bd53e430ff0f052cbbab814f14de01324782067420bbef2c6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCABS1379679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd84c02937dec65ad600555956fd04d2c01b92abe0d0aa7332e0f2d6e7097a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:16Z), 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/TCABS1379681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b48d744be3cc6b21d0a6013b9c80e23c567184d63eb5862a403006b07af2ae8. 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/TCABS1379684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25505cf47dae4e3043c6472b18fc77cad72d2c05c2b4def8967fbe83e676802. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCABS1379686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73f901a8a38d45d2e91cdbe596d04ede3ab71ca91ecb6f8ffe1ad0185723fe2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABS1379687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746386f5a96585a1656afe39f7178eb096f60c0acee482bdd35d13da8a62c923. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:53:55Z), 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/TCABS1379688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe128219f49bf5eb09886d9e5a10a2aa8818b8b0cc7a2db766b08e27e7b6493b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCABS1379689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e94fb32259c46a1e4e21d38a97d282dd189abf907005b779a7237a452c320. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:34:07Z), 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/QM3LS1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb995b363290431f9b91568f52994baaeda9f1fd7beea134282f389bdb757881. 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/QM3LS1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb63af804208700fb6f095afaceea0191ec0e6b9ea1476ef82b9b79845f96974. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM3LS1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66625f6dc9329544c314f2d54707591200745852d4ac45c66a6abef9eb2afd72. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:08Z), 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/QM3LS1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc888ee9e563248e034bb582f0ded9ef3eb54052986c4c30b4da1991f73eb9477. 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/QM3LS1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b493ed3aee8890399d85904cbd085f1a6095a8eebc1d2b9beb44a0c0aa7279c. 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/QM3LS1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565e3ef574cf2227427a1392c635571a5f360b71c87da384a4690537e3d60a19. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:38Z), 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/QM3LS1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398378cb660b65ddba4ce811b758cf37e55c930b690e11afc3e6d305764e1be. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:04Z), 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/QM3LS1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a590f9fa867bac7b1f891a5540b2b6f7cdf425bf4590bb91ed287327b419e2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:10Z), 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/QM3LS1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6985402566ce10f54a3316ca7f6ca58da2578624fef16b1dcefac21ae05b7a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM3LS1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb154987088443fd706e66f016aab1d122468eaed62d44d6f5350f570e8b82e8a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:11Z), 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/QM3LS1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28588e97f710480e119f28898b9530842274f77b65080a1c64ccbb1b84e3403f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:15Z), 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/QM3LS1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74fd4552108631202aaa9bdf9831aa1e512917e6e75e67af1cc950519d4b23d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM3LS1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00803bcf96b34df0914cb8e86eaba2a4e45cc373aa8237829d329c52bb53a848. 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/QM3LS1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912846cd7944e2a97e5b833ede254afd29e7945b5fe864c0fc66066e3b16637f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM3LS1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f0661b6e677d0aff1e20e99a147b69c83b39057a8ea35ebe62cffb8e3eba26. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM3LS2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd176a821790d5dc78055960e4d1a0e1ddb7eb7e4a6b3c471f43c6dcb0c6f5764. 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/QM3LS2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5f82251ddce66ae061afd2bb417cdf5bf54cf49b5adbccc362b0fbbbbd0816. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM3LS2000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f0661b6e677d0aff1e20e99a147b69c83b39057a8ea35ebe62cffb8e3eba26. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM3LS2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270dc1abd7fc0c7643e23368abe664d4b44e671e148da9ff5899961c966ecf0a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QM6N22329234.