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 0x546a97581980304dbb0667f31484d8ae20d0e2986ac5e1c8ee813fee43b230dd. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fecbbc8-0f74-46d8-bce7-299c796c9696.json and https://artists.proofprofile.net/proofs/artist/4fecbbc8-0f74-46d8-bce7-299c796c9696.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grupo Jejeje (Rebajadas Por Sonido Dueñez)
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 0x0178c845f5b4b3034426c5fda7f5c0af934c592db24be32fe092d628e63861cb. 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/USYBL2000589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd714e0d92772c6100f3486d453172fa9c3c6d8b9394cb474d2c37c88292ab518. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USYBL2000590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41cdac82e2113793c9a6f6670db6fc27a57716aa223324c2a9e13e14ceb719c. 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/USYBL2000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8efed3b52cfd7d25066ed709a4e67f06ff7bb694e424f0a9fc9cef87ea8bd4. 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/USYBL2000594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca9d12d961fb9561fe65aa3c6a6fbbbb2fb1206be69c9c3caca946a2af36b1. 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/USYBL2000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d49e5eba640bc51c91d30cbd32a1f98bd6805def1e5d4335272df2eec82305. 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/USYBL2000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f8c639eb0872afcd6da9c09bdd4975fb27a20d8ec50511205d4180f14a8205. 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/USYBL2000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76736a7578b60a347992977e3d781c67cd1927186641257319728f07fc1e2678. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:53:35Z), 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/USYBL2000588.
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 0x8bd0a52793617352e8aa7953729b80065b502288e76a6499ca4c9379254e8606. 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/USYBL2000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cea3007fd7411ee966033742c811b1bde38e3ed8b11ade817846bcb8dbdc0d5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USYBL2000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35280bf1eadead33bdfa6a156399a8a85d19414010fa8d19e30a3c19ba8fa69c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USYBL2000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba692ca045888d1569e3567668274f9ddcc6f3c789359b0642b53380fadab5ae. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USYBL2000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ccced7497bce68dda1f6e3263dfbfe3756eb24e5c2730b4591d1b9ac8372f. 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/USYBL1900651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda079ac8811ffb81485928e9763faa1c2d98925260fa7923c9e89a2e8e38d28d. 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/USYBL1900652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d179687d4df07a35a127c215a1b5287175d655d720e9c15ab7a138b7a8e906. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USYBL1900662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313323b277ab9f4aba81d22e0acc9bcd54a7bc0590bac53df4f5d9f9a33bd361. 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/USYBL1900663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa25171e4dedccbd87d0d3704b84de5508c1d9a455522c692295464f5e5b2da. 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/USYBL1900655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7381d3d354df2382655b18750ced0ed1bbba746537b29184af4a4da5e5139df8. 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/USYBL1900654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f855a5fd10ce0f088856f2ab3381097a61a28082f5f26d977252726a8ae1cb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USYBL1900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd95eacf5299c81c9d0e702b4a7e53b09e7fdd528e6e94a608dbfdee54315f81. 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/USYBL1900657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6afc8f3aba7f9bd16d0a47db9ef31f6459862211bb223a71ae4f8858ff2dff. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USYBL1900658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c298e31a65e86dfcc4376f6c372cd1910f646873e3a70e5d2ec8c2ca5f8d1f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USYBL1900659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a2d8574fb8c305cd226c8ebeceb1ce60862a63b6f46bbc2aaa7a6da4ef4782. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USYBL1900660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e813895ffdd371e8d660772493f2f641994a99f8f5a61739ae1c6bfdfe11a9c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USYBL1900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3a115e112554f1c598577b92756b07a7e52615013a67ea48abff715dcf27c. 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/QZHN72126459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5238c8225fef801738b8cb128cc34c640666fd08c0f2236a07b2f8b1d5133bc. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN72126460.