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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e3ac508768702f7f2e95ffadb9987ed0686761c03ecb0d62b70b6321e678f. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c0c5be9-4b44-45b2-91e5-770b551992ad.json and https://artists.proofprofile.net/proofs/artist/0c0c5be9-4b44-45b2-91e5-770b551992ad.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d4cff66d0b16de5041c974667a2d668e3bc2348f007c3fbf2474bee2ebf575. 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/FISRK0200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea5adba624d5d24feff6ab62841668b860aa39c23b106ec88d681effc14dd23. 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/FISRK0200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b213be3c9638de61db546ef8fbc253d24e377d53c283f76820e67cd4edd72. 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/FISRK0200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21748f0d2cc0b60ed7187fb410c4fcd511f9b22432761b199a39d427c95bca1. 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/FISRK0200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1d86108b5e59180bcf69a15d9f22a6ededb3ce423c3b736fa04d5856de17bb. 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/FISRK0200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b05b86523f549f864c8722b96ef0085d98b6d93f74c7a72a118a8d6b688062. 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/FISRK0200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae54fd2368158680d5bc96e5580455350e404fc00d66f205b8576669ee5ff452. 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/FISRK0200065.
Saavu, Jeesus, suuri armontuoja (Virsi 357)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64d3f0652ea96e9ce2a75605706dad8bdf744c04d86060bbacd9c907601c8b0. 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/FISRK0200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf276c1c29ef08009f2ad8571c8975ecdae1296872da3be875cdd4f87a910342a. 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/FISRK0200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3be5ec298683515c0cc01e8828f218f955ef06b6f4f16fc2b243a11bc6ff9. 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/FISRK0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb885dacab12d5e2aa9c00a942759444d0835de1c58525ed3f07668310b76b072. 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/FISRK0200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558af5ebedb2e07a8d5d3fe040c2ede1df70fcc7c11690bf5ec6d24d7ede1d1f. 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/FISRK0200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa81cfc14b5df57501a41c0ae01a046094504e4ed478e532b067d650e8785e. 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/FISRK0200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b57b280112a2fb96d10ef4bc49931a6334bec7b4d552324c155ff79db0b5cb. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:26:36Z), 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/FISRK0200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb5f4b9acd7feea4115d7f97be50509f9c6c23950329b7b7d98b50a06683d8. 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/FISRK0200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ab954df87acc9f47a3cfaa673e1545a8475426425dc92d0e9a85525a668e9. 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/FISRK0200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942f00f99cdd7edb0013a2e6e9226ac50f1be5722addcf253a4f3b790a547960. 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/FISRK0200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b203071c6fd78b2206f8865812c06744b58b9de8a841454dcf1d6a17aebca3. 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/FISRK0200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b2a32430f27f5c006bc430a0aaea3aa2ade7179fb4abb80f985382191e5922. 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/FISRK0200078.