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 0x58a47fe7894bbf395400d493cda77b402d432e026d98887634bff64d2596aa58. 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/5f8e9b29-3e09-402d-8594-a3c22b5cad13.json and https://artists.proofprofile.net/proofs/artist/5f8e9b29-3e09-402d-8594-a3c22b5cad13.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 0xc36b902cf23b455b27dfe1f7d8bfa35d654b68051d1d7f34ab268d4f0dcd1fcb. 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/GB2LD2210353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553de8535a4c7e0e7ccca842050a200ccbf6877daa125edd863a09a9fd71e42d. 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/NL2VN2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9539ba4f9bac64091b29ca59cb9c82fd8d5d227baf73fe506e3b2da523b7d2. 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/GB2LD2210123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438cb6d5753b367658cdb1c66f672aa17b26e10b4d7558afc8665fb07ad964db. 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/QMDA62149453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425238e6b4b1ae870afd80ebf9915438d0d13b62e098e24c8044606f781008bc. 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/CA5KR2386386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1173e72af0b093b38852172bd7748e26f8a51df580e264b843bc34447afc898. 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/GB2LD2210186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2fb68c68a54635cff1e51b40fa9cd68197d4c82172e428528fd1345d465d56. 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/CA5KR2455459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c100ee3332df8084c3bb1bce1af858a3d2fdd432ca58d4a415ebe6007817601. 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/CA5KR2453005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d7e0346173c8b81c59843ca78a54b28818a235c4a04b081ecb3e821ee2f148. 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/CA5KR2431798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c6bd87ea90cc4975ad3e5ba533a44b6b939818b1e9c83710e1cf71ef76075e. 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/CA5KR2414974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5175921fe8f82e8ce740118667e801bbf9544a11bf6b042a6e34f38d2f51860. 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/CA5KR2401360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cf232b3d21674db8b375b7bed5575023b1a5bca7df21f840abf5213d50f4ef. 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/CA5KR2401361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f3165a1c2a5503800cd3fb6667dd4fdba22b2ec3c2cd37a3a2e83b0fbabd2. 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/CA5KR2401362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0875f2b7ed6c5819faef4c4d76db49e8f635bc0f5b4e739dbdd75b51e839d. 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/CA5KR2401363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b1fe9c7c49751603682a73f4c6cdadd2f93e968169270050c8a4104880fda3. 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/CA5KR2401364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7bcfcf55f29bc2dc00438fb47530f5fd7089d3441d0bcae05ea1ca8241bf38. 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/CA5KR2393047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74588e9900d304524b5d125303318b7accd4140de3810bf5dd49b02a012ef37e. 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/NL5WB2300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a382e4ad7ea14727dede1bd686df90bdd208ba1395c86a57b49acd71c2e5f2. 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/NL5WB2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f138674079e1ce64b0d53ddc5ac457c3523cce5674b10c72ace5086a7c97d. 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/CA5KR2368176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e21be7d91839c26183799ccb7ef66f3217c1eb03e6f1849929e030d796e595. 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/GB2LD2310230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b6e3dae376e01363676a8de1a02a97088bfbb2b05bc764da14c8d50fe7eb2. 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/USDM32301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2471dddb462b405b1e37632210a3cec157d0294fe0b6d7ea4ad2d58b760da8. 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/NL5WB2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199d7999e0d9a6d8fe69003f6d5d6b230a7546ce03afaae9f06025b0e3c8c49. 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/GB2LD2210426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7fc621774e994cc61ce89e58ae06323e350f9322dbaebb9e784f34cbd4d6d. 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/GB2LD2210360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5a160116bffe2119bab0b80d901ee7aa3889a9ee134ee62d41037d0bd7bd86. 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/GB2LD2210225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ece118faf2ca981833e9b1f04af73ac9ea6c5efc00bd6537ee839c8e91285. 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/GB2LD2210198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df22425bd135f1b9f8d4d8d1a2e3187494aaafb25923dcd45983736fc02c2ea. 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/QMDA62129049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5094fddb134ce32dea0aec54f9bc1d7aef3e501aa4371f0c81eed9bb234e4ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFME2149820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b863ddf05904a4e09a033fa5bcb7b5d7460d229f90cddc14bd87cb72ba4a32. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH7812194798.