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 0x69ba726cc80f4a97b689314da120f4d929535e41549b4115894f5c31f05e5ecb. 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/7f1e5e4c-8cff-4a45-b001-51820084ec5c.json and https://artists.proofprofile.net/proofs/artist/7f1e5e4c-8cff-4a45-b001-51820084ec5c.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 0x3a3c6ad92e600d95eaae412fbce32cc31425454ed07bff76ea536d3b0573bd11. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZM5U2100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c7136152718f9a85a9b20323a37497dfe25ac271d8f8e8f0e8d1243fea3269. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZM5U2100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f0ab9a8c1df13283da93381086a7d7247e671743fc86180973ca3bd193b61a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZM5U2100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9e51fbe7a30f53c442835cbe3d7b0600bdecd2712257c69446ce24312d679. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZM5U2100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac4168a001448c4ac521d63ffa3674397b32475137dc1901c9465e07446be9f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZM5U2100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32293703364beb81c949b89e726d9b1ad00c876be9e7641fe856d210d136e8b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZM5U2100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d2a1cb8cc7313a3ce2248d6a72bc14ddaf0f8a7a3cc93aea586c6384f95d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZM5U2100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb950a7c78b29ea01574cda9809f5f3f26ba4a02c4b664ec6534bac0d57f73080. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZM5U2200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9faa54a94ec51156388c801a42c386192816c58108ef94b2221014f188af87b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZM5U2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f8ca657a4ae106f945c420b78302851b7c27efb137fb83914c837c148ba3c5. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZM5U2300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248aff53ed3b94053a6d17a0f3450aefd247c8ab37b002006b784984c433968c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2310183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606c9b2ee8928c6015c76ab19a13610e043ad6e53daa21b6c45ed1842610b99. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QMFMG2368289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc194455de647fac2876d85af37cbbc7188467693b47b7158d10c61973f21b8e3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM9WM2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131da3ce098ba822208a463bb11e6a99ef09bf72ab79bc7a0dc2cb17e135132. 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/QM9WM2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebeab8a10d768865c267d99ad015d3a0a73479ff874833ef42d70951e11044f. 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/USA2P2215309.
Latin Rhythm - The Best Reggeaton Club Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8092f360b62e29873b2b6eb45c515892995fdd2fdcf725437b1f828031c24. 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/QZM5U2200375.