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 0xa4dc782c111a3efc53a189a6b2a3b87b4afc0e45d3e36ee26343f8ef47f66795. 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/97b5ea8c-194c-43d6-b4bc-7194a88ebf15.json and https://artists.proofprofile.net/proofs/artist/97b5ea8c-194c-43d6-b4bc-7194a88ebf15.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 0x86119f796d596ca2091a7d76cb2ad0b76f2461b69fed0656ef6e592cc422835a. 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/BKLOT2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac25441b09a12eb8c6d9315830c921eb03d64043053121f12e2bfbafa3ae0c21. 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/BKLOT2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30af3f2c4fe35f1b4e16c0dcb3e6d7f40d3aec40e6f36ea2313e00264bc040d. 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/BKLOT2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a150094f5d7bd58b60f7db99009c33bdbe0eab100675d4f139514c4486528d8. 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/BCQHR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9892eeae98591dbbadc9c4030c16962b8689f03e84b940571e683db13fde00a. 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/BKLOT2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270bb776d5ef759bc69c744158172b1fb552834c77d462884dfb3f273a3f0c8b. 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/BKLOT2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a505cb6cc8d960f76d313944bc2d1a3f5dfa29a3bf93a99a2c3988641ac98e. 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/BKLOT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3b1898c77b7d1a57d293e963949386a049b474ab99d771dc2e838f905b85e9. 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/BKLOT2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779acc752205aa49efa2099a703550a39bba6d0c0b2b408ea4054938769ae729. 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/QZMZ92127208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebac3de5a191ba9081210206cbddfe137e738ed9e67b235d7f71b2317cb0238. 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/BX40Q2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b70f3da2aaacfc0938edf70ae7b2d9ff64b4f416ca0e23a59820e67f9896d4. 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/BX40Q2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce826be59fce9e85e5c140a4b7c610ec12f5a96876fbf7a7e1c0710f61f3e14. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRUM72301771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f84d0956c0e9417ff1832ffda86788c2ec65d0f83dec298425dfeb7f048dae0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRUM72301774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5feeef9f16325382ef1a49dab93b76963ff497961d8115d17cff9ef3c224fa. 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/BRUM72301775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277156896713958bc3a529febc55cdfcfcb2138af92dc04371e8898db1f3f182. 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/BRUM72301782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3975a11b85e136882a9b8f3b7220187e5d83e996bc27d81210bfb22a97f2bb6d. 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/BKSKI2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc4e296952538decf589a748955c4b49ef3de098f358d6ddafb793ed60155e. 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/BKLOT2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e56388b65555c80b019d0bf2e1bc76006c9043220e3e1869274d660d796808. 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/BKSKI2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4265fa396c6735370abe9531b9b0e18a800565e1426a5ff6092bf9e22a6e15. 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/BKSKI2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178dbd4ffdffd2718f823ab97dc3d8fad74fdc4d4b3dbec849b2449f1096d50. 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/BKSKI2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5babc267eafaf651986c2c491841c44d213dc1eb76eb731bdab718105b1bd. 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/BKSKI2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182d160f0f37c65f8cc361621124ef3b8e02233c0a580aa5e818a1deccf20a2a. 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/BKSKI2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45703870794f7e8a010f3f310ab9c36fa210327e4ec4446c6890ca4738140a98. 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/BKSKI2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3975a11b85e136882a9b8f3b7220187e5d83e996bc27d81210bfb22a97f2bb6d. 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/BKSKI2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840d4efa85337cc3b5086ab2c06609522dbcd0063487861c8ef903c78d02d723. 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/BKSKI2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf559812449b8c0dcb951ffad868592fbe31dbd5c78cbe040c6dae1bae2a189. 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/BKLOT2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681369c63148012b0772e6425ad024c675921845eed487b95192905e8a680db7. 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/BKSKI2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a8c556efea9fedb578ae85d587044d207b4c41ddf94aa50f6530eaead2b68. 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/BKSKI2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4427b5b55573ea5018b1d663a8f9406949256482cd45f644f6e3dd4cfe5b9a2c. 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/BKSKI2400016.