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 0x819de91e4bfb4910260fa9ad222a45914c5ce6356343810343b9d5b2fea972e3. 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/55aaba06-28b0-4dea-afa8-11573eb55b81.json and https://artists.proofprofile.net/proofs/artist/55aaba06-28b0-4dea-afa8-11573eb55b81.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 0xeea9440ec7ddd8430df8ccbadd7f9373d5c4bd81ecf8da4e3ef514e378e98320. 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/QM7282406464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e67ce0d5fb8e5559aba59a5661e39f3d33a5cabee0959789f536f72430edcce. 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/QM6P42458118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931bbdaca21c953c5c07fa910aecf33217c15c7a8884a8000d20bfae15a3f109. 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/QM6N22493655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb05d95a0250fe7cd29ea7c2192db48d7eac690e5032bee087bc0cf807167369. 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/QM6MZ2436885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbcdc18b210f5d22910b323043337319b512aff9e0706ae9f19640467daeaaa. 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/QM4TX2486287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cd6ba916b3e8746d2081c2fc9d1d000e6734a2e63dc3d50197d59ab2640693. 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/QM4TX2420684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2385738b063bfdfd144a485592873a8212878e4dfbcb886db9a4baa905b6870e. 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/QM4TW2473001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5e63445e6e2dacc9b71a14937be0c934f6b055d11047313cca0b93332369d7. 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/FR10S2424472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd806770df76f778ffde71a1d4ea6359721315ad96a253bad4cd7faab3d1cf3e. 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/AUGBT2361842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffc4ce138fa58a6f59ccbe12bed7203f779f18d97182dcc7f4a4ee600e2e2db. 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/AUGBT2326785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36448b02341854dba47e5e6ba61356d49625976f556b8fdf804cdcc405bc3954. 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/DGA0L2310847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c87bd92a07991e7102758e90457e9a3f4b6de7d7a3c6e944e38ebc3c5e4d694. 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/QZTAX2347691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362abd4108bfaadf3cebde642e344821f7cada03687b135df4297d99f87301b1. 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/DGA072305142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea101e6dfd4753e4d6b89d2d960678adf0cab81d14bb31295106f2b71071bd35. 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/QZMEN2331779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e1a647103378729d4523f52a0d42ee50bab73bdca942767f104cec227ed803. 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/QZMEN2329690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68b049ce8c220c601ee50e3428651f97759025409d7af2114776d8bb074f72. 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/QZHNC2369487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206b103cc20dda79fc5aacb9407fbd83c6fe5d8791f646908263500158ac549c. 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/AUMEV2331374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fb58ee5ebd7ce7b1306a7823660d04bfad40bf3fb11573a936cd83340077f. 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/QZFYX2359067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c803defcd7dfbff22840d993e34117f2d5a0fea4dd1491b5041d6899458fbd. 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/QZFYX2334524.