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 0x4941d1f60f30613c064a15689df4af630cbc52847dc7887538a4e18cc0c3ee59. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8485910-3898-4e03-8100-523a685abff8.json and https://artists.proofprofile.net/proofs/artist/b8485910-3898-4e03-8100-523a685abff8.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 0xd615f016ce1b64204abb546fcec0cd5b6c3dddcd9e234d9225349a6bec5dd317. 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/QZK6J2305768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061478e8c8735c9152bc8bd46b2104155681cf4eed98e8ba3eff841ac6c3bf46. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZK6J2305772.
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 0x911c573d7b25a08cbf810740b9b5d8e817a075b082b1ebf83f9bbf27d59dea42. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZK6J2305777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72c2edb73bc0dd421c46633d6b68c3faee7751c474327aa88c514324ee39d2. 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/TCAFE2052222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18cb508126aa39b21d385c125f4e9533e6df3440ed06ea3c1b9e877b83623e. 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/TCAFE2052315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f4041b964b694588018d5ef91fa14796665bcdf69a3ec10568f0df36931838. 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/TCAFE2052337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8fe94b4393a6c232756b0c3097d92e8a247a5c94e15e33d83dbea37087adab. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCAFE2052252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195097a53f92fc1259429afb5e7b35fc0b2a57cb7e0b96baf7548febbf5215b2. 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/SGB502355577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6114b1b34f1dba4c2736e544ebec13608a2974e933f83455bb4a7498f4163872. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWZ2229326.
En Mi Copa (Chopped Not Slopped) [OG Ron C Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb491c8e9cf67651ed5229e6c962794006cd80b8e1bd9f5235b5c0e4a944c09b. 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/QZTAT2188499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aae747c8d26fc0bf98769bfecb96b13e2208700b6b41b8c3bdc0905883b9c69. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWV2118571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a5bc64eb6cecdefda64ad67ab6fcd017c4e9bac6c4d703d5de4d598e93c15. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWU2132039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a12bd4b2e5750e78650063e389161813239f6e2985c6d38b7a9f41cc80f470. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWU2132041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b53d09c8844f4ce53d8af78d7a7d534a622739ff59c09c95377d434973e310c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNWU2132040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e872a03175b6a9b065459eeaa0adb12d307d369922f01ea095d3704252efb. 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/QZHN72171580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47503c62d888f7ae98e8226962023d8bb991d09e58159c1bfc8f5c94b2210d7b. 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/TCAIS2467795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac9030778daf95b295b1fb71a2095407c6d6954bdf4284665c4f244fc5a3dd. 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/TCAIS2467856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0665ca665c10e2fff87df107b0bc62731ac7530321a5191cb0faab60cb0e00. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAIT2467658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c678d7d5cb28682d05e08e850b469073fda859f55df0252af24c1f2e9270c2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAIS2467729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36ac6948286203e0e2132287f9a9ea0a73a3d394896b7db6193a7d2d3e130b8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCAIU2467876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a35455620a335902f034dfbd2404df85394b2c345101f101efeb5b946c4b3fe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHN82491010.