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 0xe0ea1e017abf7d9090475f34fd08655bb6b43002bdb316c3acc956197dc7b46d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10f7f7e6-6711-4432-a64b-c9289f6a9cf9.json and https://artists.proofprofile.net/proofs/artist/10f7f7e6-6711-4432-a64b-c9289f6a9cf9.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 0xbead94e756af4c3b0e8ec36022996de6df4ae388ba2f1ccf1b8f1ae9604f48d8. 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/QZWFQ2342442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc7d0be08d44b81709f1243cec811bb8ce82cdd2692e5bfe4a9229e8c11cd25. 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/QM6P42434196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4014df6d679684cbf6c151f268d52cb4ba4263b47247066423245e057d44f. 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/QM6P42434197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265a9182e759e5c1d24dd865b4b22c6508c21fa8d670a75fa66258da95b2dcc8. 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/QM6P42434200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8554e5a0df965b4c4a1ade77b4a4992ebbb3e8d4e821f405e9fccb9044f31ed. 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/QM6MZ2497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed682fd9631e27a2f647e19c77a9b3e0a3b36ac03beca9fbeb6c30521ed54d. 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/QM6P42434202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4ab0951ad606d47494163d5f319f851b187ff916b9294b0629251b3e74d51. 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/QM6P42434203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb22f18c2a20f3bef1ff345f966c0ec37025952921ebf3a03eeb649c838fab3. 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/QM6P42434204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08725dd7fe95a05ac775ba071be6b6271322248df92e3c1335374adefb38ec24. 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/QM6P42434205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b49545236737e1671f003762e980b78506e88c07e37b31c7b9c985543a9d50. 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/QM6P42434207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85358ff82bb33dd4aa288ba42e7f9768707c81b684eaceca7158a4dbe7adda6. 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/QM6N22418149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ac4fae5da76baa95cc9579c6858304b0cb464b5627510b29f3373d9479e6e9. 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/QM6P42434211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85358ff82bb33dd4aa288ba42e7f9768707c81b684eaceca7158a4dbe7adda6. 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/QM6N22418149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8554e5a0df965b4c4a1ade77b4a4992ebbb3e8d4e821f405e9fccb9044f31ed. 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/QM6MZ2497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cef076c60474d47f48326f7b552b0413a118023f793f48fbc0527c0fdf44314. 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/FIWMA2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cceaa2fc7699662f61662f534c2ada16a8a55effc39bf109546aa6bd3c7caa1. 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/FIBAR2300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb01c78fd353417b03ca6d5337350d9c0b432b3d9805c998f54e311a05670071. 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/FIWMA2400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953da9d2631f13f7d0544b6ccf154c5fdfbcff5adaa998a8f8c0b57ee5cc60c. 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/QZTB42494157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953da9d2631f13f7d0544b6ccf154c5fdfbcff5adaa998a8f8c0b57ee5cc60c. 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/QZTB42494157.