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 0xad6cecc49b05ad33ac0b770a2e2b1145569034518bc6883ef7ecec72e91d0881. 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/27c187f1-05e8-4a5c-a218-148b6fa93587.json and https://artists.proofprofile.net/proofs/artist/27c187f1-05e8-4a5c-a218-148b6fa93587.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 0x95efb2e0a6b18e17671876e6c35e70810807dfe50cfcc679c12058aee948e2a3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BAA052024683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607a135b7e3f655849d3b04769d05a148b0c7d7461251c8dbe9275089ea077bb. 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/BAA052024684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d5bde0afd36cdd01c2564b08e1d1f767be396df44ca51504cfa46ce62f780. 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/BAA052024685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d600e9d0fc63356059af16b45f153105934836a62ab1df1a299711127a319b. 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/BAA052024689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e78d6ab6537dc8667b8057591d01ffe0852b194ad2d82e0fa3df31d4b187e7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:27Z), 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/BAA052024693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf437cf0da1f4d17b94546267359932b42e308a597798c1b8ba8c103383cf2157. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/BAA052024694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063410aedcdd7a1a3acd22adc2310b5bb7c29cf9b4b60b671d72e33ac6cadbc3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BAA052024717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625128fb435ba8ed02d454f0adccfe823f04beb86b6d4606cdd7a8406f26d17. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-20T11:56:31Z), 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/BAA052024719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a42d8725f379702edf5f2917f58542b0bbb7d07183bea7886f5b2160c5e54f9. 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/BGA261301868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2275ab1685eaa2b9ad5ec416cfb7a1a95bd42a9068bd9049d8ae2963ef47197f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/RSA132200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483f48b5e0f687de8e1f319de1907ef5e71bb627140ff2f1359b8c26cdf5ac96. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA261302396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43fabb0503d790b37d4486c7d3ec816dc3fe30b863c3b6851afa4389eb939db. 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/BGA261301846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786b12a564163eea3a92adbb2a3d437dd5257d382b37db5cb13d76fad8020292. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RSA221601779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3276cf2e23fd7693ac3c0670c686afb732b6ba63561f705fc5b2032978e31d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/AEA0Q2320972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c54acfacaee7002f71f46f5ac21f6fd3b6c8a69209c215020c8254a343569. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEKB72437994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ef250015fc2bbd4416cf2b2e82d4e80894e9de618627284150f633a551f36. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEKB72437939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91ffb40ae7212aae43817a4aa1967ad654dbcd3784f00614a4066b02ccb37b3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEKB72437940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9346edb7aa690bc7dceaa33ca24f4e505a2067e37f5897c46461fc2a447f7a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEKB72438912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6202db94beaa2aa055e04e0e7a468801ac0d30200ac8631537c962c11a813a. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/DEKB72438914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b31adc413428af58bb7bf4951359944d88e97c04a15549b51b6b08168a786c. 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/DEKB72438917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7abc9e604f1b44b70c4d749b844a82df07caba54b2d0ac7623d986c1b6c4b1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEKB72438919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7049fd776591304d1ef02d934f34a478bd153f34a0300a45f7ab8534a3f42c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEKB72438973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3a99ecc46f03e3a9a066a74d34c0f847f0e5fba9dfaa5c5930ada15cd02b2. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DEKB72439253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107be0d4b9db440ca3f8188bd5289309712ea7c2b176a49e9314a524808cc7ee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEKB72439255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac4903a62aedc3b6e3a61a596a9c251f9c492786c689a0e0dcaf55b2a706fbc. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BAA052446352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3327ed1268dee9efdf0b0ac1adcdd636af85c069148c3efd37c6454f74f38e. 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/BAA052446801.