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 0xc47b433c5a8a133384b665988e92d88a7b2d95ff97521a29300b389750c92fb9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c851529d-2393-4343-abda-5692df887f4c.json and https://artists.proofprofile.net/proofs/artist/c851529d-2393-4343-abda-5692df887f4c.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 0x078bd44a5e748fab5561d5925205d7b5846b5f06a81c4809e8f88a06c05a3596. 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/FR10S2431380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf338903689e6a1be4f85f2b87649f49bbde2e004fdab197feba1b84f02cc9. 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/QM6N22209778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476388f436ae892f390438618efe0e07a40f200f071db9e88e51cab48dca758. 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/QM6MZ2270730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab01c2d67ef509a5e41018cd080ca1e2a0bb66ac378be66947888fb6065fec. 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/SE6132248723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0e23b6cb5f9a54a071e2e09b680833662a511adde72b8a758c8f207dcf4c45. 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/QM4TW2270890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268494d596ff9d64bc80587d35d32bfd86193977f85c63b2adfbf85dbaf053dc. 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/QZK6N2379650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d876d07ddb02a5b9a4932899e7f4ac0fbfa282e179b8780fe74d16422d617. 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/DGA062342597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c77c3aded78a0344a83d31613615042ed2527f74efa174275165b934ff5e640. 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/NLZ542300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54c52b2004a9f983c56bb0d802275317f63f5fb99843265fa5f8f04070bb8e6. 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/DGA082337044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478aecd87be287e35e84e2a806412333483094469f0592b17934c73abb42f6ce. 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/DGA0Q2376188.
Eurodancer - Alex D'Rosso & Refeci Remake
Eurodancer (Alex D'Rosso & Refeci Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb5f00c6f491b0aeae88462137c2ecfb82849f47587d37d3a284c758f48d1f. 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/QM7282024385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf50469356a3e677ece6cc26e879948cd71472344eec480bafe38f736e19a397. 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/DGA0L2372360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6b73bbd060b8f4416c53aea7de1202a241b745c220d599019e9ec0624d414. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMBZ92264610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d7d62dcf0799c8417893cf3b26cdada3060dabe281d3fae87867ce20c05feb. 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/QM6N22279867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c94142657543de103a8aa6cbb17ddf677c91e955c07804e3e370caa72f22c2. 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/QM6MZ2276139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b84d0c7061edefcd782a40f7491d11369ee20615fe8ad90b04a8f6fc5039fc0. 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/QM6MZ2220509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c648be6bbf358d97becdb1e444fb7afe5c792c39456f2e43ee896be33aecdc. 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/GX89G2337592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7119a26696b7320d9f9faa124d46542d039544e3771ca47bf3e17eeb9058cb. 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/NLQ8D2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7119a26696b7320d9f9faa124d46542d039544e3771ca47bf3e17eeb9058cb. 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/NLQ8D2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed3d375b9a43a6a4889f9a23171295c1ff0422050f36c69874b74d2acc4b3a3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6MZ2210634.
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