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 0xdf6c683f3dbbcbb3dd0b049477b61cb27d4c2895ab649a550f08496a5338035a. 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/ae6457fc-9e49-4ead-bbb2-336008e4b060.json and https://artists.proofprofile.net/proofs/artist/ae6457fc-9e49-4ead-bbb2-336008e4b060.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 0xcff73addd8bbb44b15a3516aec3c7b713411ae39de5e97243d8cdbcc92e00384. 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/QZS662294971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a624728a10e2f70fc04a5c955b3a829cd12413b05e2834b3d8dfc05bd71ce3. 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/QZS7J2393588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84551985a774bfb82aecdbdcb9a0c42c97d6e7e43113468c516331e1ca9ab33a. 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/QZTL92390424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59ce59c59778387e512e20a86cef092251ff57cde0838b9a5bbe693ad0d734. 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/QZMHL2253110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50612586ede024f5142b1f43a5c1aba66cd2d1cbb53fae9bafb4a7c1fa5a2297. 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/QZS672197773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e31aae1cda6c6be03939604c60fe4361f54011061da188b9f18803f98b83d. 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/QZS642115854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b00c6af58a1df958ed3588964e4a2d59cf9645060fbe5b6ea9303b6f090a2f. 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/QZKDK2173376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3c253483d38f9d86176730543b7c5780907c0de6f3efd0d70c8b6b67d5ce6. 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/QZKDK2137050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0030e2f0e057b667bdc6814852109d938f1330a916b2a55a7fa0425d8f304223. 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/QM42K2080729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d000d9351cd1b0f3a83f5a86adc5e525e6a6bc608ea50f055381c831de3cd7. 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/QM42K2093179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd783af538797d9400c51974b1d9ed0cb5a3978031b22a9289049977d7a64c9fa. 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/QM42K2013011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84551985a774bfb82aecdbdcb9a0c42c97d6e7e43113468c516331e1ca9ab33a. 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/QZTL92390424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52b4f8d73e6a4a65099d41f47f64d78fdc259dcd8bd233a1ceea2a28472a0e. 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/QZQAY2416090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a624728a10e2f70fc04a5c955b3a829cd12413b05e2834b3d8dfc05bd71ce3. 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/QZS7J2393588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddc4d68039aef2bf1d9162459ff1cc23722a0be69c28ce4776e9aa5888eddee. 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/QZSYP2497429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a01494c218a7f01851af5bd129344e698c436a74fe66a096a546b252b48d9c3. 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/QZQAY2483495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ef92a45d90090f171c56ebbba1ee4bcec94bc3f01ea0eab7e90bdb56d7e708. 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/QZTLA2550325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c85d4c02b9d3181fc6dcb196bcf6e136ba1c82fa295f3a787acbcadf7fb6e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZFYY2595464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a004fb48b6cc6d2563528735d013ad989dd5272017d5998ef774f75a8166fc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZFYY2595465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1b201a53f2969d73155462bdef28e9d907699fcffd45c519ef93f478ece82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZFYY2595467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59ce59c59778387e512e20a86cef092251ff57cde0838b9a5bbe693ad0d734. 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/QZMHL2253110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff73addd8bbb44b15a3516aec3c7b713411ae39de5e97243d8cdbcc92e00384. 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/QZS662294971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0030e2f0e057b667bdc6814852109d938f1330a916b2a55a7fa0425d8f304223. 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/QM42K2080729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3bd6e298620e08387ff70efc099ceaafd5d25fe8ef5ba14dcfac610e0bfdea. 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/QM42K1930138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf7f01a794101cc1994c4e74e600a4229bca6c5b89d5e65066ce7728f4dd868. 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/QZS652157685.