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 0x1ae948e7de7dd90d618d3bc812a6ad30aae1726adcbc80dfc0566d139e2fd44c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cae6f3d9-341c-4bac-89d2-827063b19993.json and https://artists.proofprofile.net/proofs/artist/cae6f3d9-341c-4bac-89d2-827063b19993.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 0xb88812cba9e7ee87ab7b569d3c82caf7d039312d9536af2c5ea36eebf7045714. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66251a1b9bd87eab9306a173c27f9cc107bc5277b28f6f597d127746a50bc29f. 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/DEN062300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca387618d1f47f3e3746d67a35df32834764c027f94b2e00ee91f00af5550f0. 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/DEN062201415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c216e479540af2f634636cf9bbfca484a7d4ff7a41f3ab9c0d178fbd63fbd2e. 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/DEYT72200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb57a4c6edb965373627b58b4c13a6d1842258488b411c39e2abbc2dc3838a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DK4YA2277801.
Kids Of NYC (Danny Howard 'Dark Acid' Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce430bc49018b116ba615ce956875c1c422373cb4ffb921307ac6173f0c778b. 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/DEYT72100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab8f28283849403976724f4c447f15c2b7b748af4891a1dbf6bfa8dab7f16f0. 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/DEYT72100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423de9fc686cdd4279185f72bfb401dc551f3741018cc56b4870cbd1d9a65c1. 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/DEYT72100457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dad27ed7b8d9e5784036c68dcacfacf125048669433b27b02f527c172e35cc. 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/NLE802100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a2f5d6576658733d18cf50c78da5f02a244931875b83726cfc0ae260dc9000. 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/DEYT72100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ef6fb70125fa9307aa771261259e533ae05d92518f409df1c8d286fa21bfb1. 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/DEYT72100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afddcce95b5605b89f8101d5b832fdb32fc9408ccc4d23247e00bf6c3ff19f9. 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/DEYT72100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dfc325219e17a17af176c83e2a634f372003c430764ced187a404509377357. 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/DEYT72100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f876bff8a4dbf15f9921b9c5127de7570073c203c231d7a5f1b4fb5751fe7a8. 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/DEYT72100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f42ffdd0cdac1e36be85311fbc906726bb384e618497b08c82b205e239a451. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85d02729c7b8cfd04ab56db5bdcb7f4992d5edc400eb8c4bae3273ff12578ff. 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/DEYT72100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc591975cf368eb2f40b7431f043aa90c618ca55fe55df56549e6ab1b710a653c. 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/DEYT72100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb087d26c581b272069d8a90345a0c254298d9d4e1bc1125416f60f245f7704a7. 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/DEYT72000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e9cddd88721f15bf90bf390e381292489e6faef3201e5c04dea4b3032e48c. 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/DK4YA2013302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c03b18fd50da215fdb37b5f3fe36d19a6bd1200496c1bf4e16e454f350944ba. 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/DK4YA2013301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d818a98a7c288a5b5ea0e40fb004f3da21f751156c065cb159387a26b1af61. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEAX12000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee71bc88a0c8937376ec80b030614c330f486d881b19dc4203f4e22a2d127e. 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/NLE802000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bafb0919635ce18f833cada7ab52d423844dd1b4cd07d1864656735c920173. 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/NLE802000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9a2709c414c02b0b09edac052a80eabd525b12fbfcaead244e5c567d78321. 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/DEAX11900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4341660db26505a08fbc1994a4756d2adf296c3b0a76adf6f623503d6b6a4204. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEAX11900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf1c34a85e9bad999897c14a5bfab0154124b073adc5b1a26dfa8f4ba5b809f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLE802100033.