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 0x51b25f35520a57291ad8c835160ec810440e1147191c9b153a276839a83de205. 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/54aed6f9-1a69-410a-9475-739149564369.json and https://artists.proofprofile.net/proofs/artist/54aed6f9-1a69-410a-9475-739149564369.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2 Phones (Spanish Remix) [feat. Pinto & Tali]
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 0x30cd2e30ea7bed5671f31620bee7cc25e92a399dec956169dfa0f23a03d9311a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7281808571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378d9ce51d603de2dd8e473a8275c21b60cb11aa1586caeb635b0c8172088a66. 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/QZ7R41952227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e00d4a653cb0cc85369336ca702b130f0f145e39021f5e31ecde9d11d0655f4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNMT2450195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c5fb0f11312bd4c2ab83797bbae273fb67964fcf72bfd5853c7e6869f03273. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZNMW2493095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8d070c2442f3f52a91392f1a058cabffed3763bd6b3817ff306310b58c52c4. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZJG52563011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa676020353bc04e13602c37d78c0a04375df83684bf15b19f13d6d75a43ba6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZL382579426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a918a3f37164512cd7c54837b0e6993ef16c20dcf6b7a9487ed8044d742967. 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/BK4DA2321252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7951a1591c2455c7b04163b8ede0a9aae87b2dd88eb89bc9a49793fbc42f00b1. 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/TCAHA2340154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd401296cda6d0c102ccfd8c8993cef9c6d59ce7138d41567fd31cfe6c5f6e. 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/GBRKQ2158505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216557bd269b570dc579a5531e4d548aacf1c161f13ba57fd667e6d9a7a207b7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNC62102659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd083601306c052f9ec2042f4f61bec669a194106c97a2499412ecf83a0cd6a. 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/TCAEH1928737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d487f02af649af3be7347b53564a946b2fdac84d5795a4ed3878acbb392592. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEH1928815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7875d0d9a3fb74f928e1ea6d974b618f1c9dca92371c59a63987489c754bed26. 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/QZ5FN1992160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa152221cb94f0d5b3b861fa59f9aef2df3bcfb10fce842edfc2a95c7dcffdb58. 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/USLZJ1952932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd2e30ea7bed5671f31620bee7cc25e92a399dec956169dfa0f23a03d9311a. 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/QM7281808571.