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 0x5a2fb9c5fa326fdb0f2cc0a9d34627170328b023c425549a54ee2c5f4cc0d2d0. 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/12374e51-4176-47e7-9c96-b01733def235.json and https://artists.proofprofile.net/proofs/artist/12374e51-4176-47e7-9c96-b01733def235.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Florecilla Recordings Vol.5 (Guitar Duets)
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 0x448be75c21ed7099ec618130bbc783104642db1e5a7269595732896813311dba. 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/AUMEV2439553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f167935c39ac4398a464876ac37d5cd5852ff0c503277eb0f762d21eb05d280. 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/AUGBT2445216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031dc1adcc829bc085a87e1aa615dd8c6398d382a7ed79caccc9acf545ae54a7. 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/AUMEV2492837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8db369cb0a1efa8d1d5cdce47fbf08e00db87d043ccdd08dee4b870d84d53d. 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/AUMEV2474542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7793864f3edc85a984b72b80d92e91d5b65482d4c301cfe5f25a4238e4b0ed. 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/AUMEV2363607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08859d0254c1d827333a7cb21ff33d35c346b02ca44767f96a28ca908ba4199c. 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/AUGBT2402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb1431f91681c5f0ef1a34b5e418774f72d0f725095435679756099cca411eb. 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/AUMEV2449100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74a5ec4fd9b83c61dc0b2e8f4c747bcb4de3551dad5fa77f42472ea39c6a84a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUMEV2458887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6993acd455521db04a707900eafd22ce965b791b6f32058e7ce8bdd7849fdd1f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AUGBT2363597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8db369cb0a1efa8d1d5cdce47fbf08e00db87d043ccdd08dee4b870d84d53d. 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/AUMEV2474542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bec3164585856f37a73935e4b69e398f5fa6deefe7120a495103d5335084ca. 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/AUMEV2170207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5192de89a6b8ecd7d1bd7591374de26d1f3d3f043755213b1eeb109f04d8e3. 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/CHD811900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9bd035f55d918c890b06810e2ad63ae0fac03cd28d1bc3e63c13b5924544ed. 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/AUMEV2432375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb09cf36bee869a19da70820332a20071815fa3cbabe3a3e4bb0f695abb720a4. 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/AUGBT2411794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5121cd97debd6f8876a45fc2197a5ae33edb3734596c1eadc73a5f19178fbb. 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/AUGBT2321508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ffafcd7df847b87118a002f9fb290febde1f18be99422abf3903e6ae6a3eed. 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/AUGBT2321523.