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 0xc771a86ed3ac31eca34fc5d3d5b4575f8c5a78f68b430d3f3bafafdca9a3b19e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3a45565-fea0-4f00-81e8-53b6b11fd7f6.json and https://artists.proofprofile.net/proofs/artist/a3a45565-fea0-4f00-81e8-53b6b11fd7f6.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 0x4f0d1a15304a50cf6a21a93199fdb166b27667f96530a47b28e9a9d691f24006. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA122469977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8be3a4d55cde397eddd01a9ced02fea70598758e3dbd51716ba07448eb86906. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA122469978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a15935f4a5844662a5307f4606c69e9b2d09186710fab7e52c5b83b7b9e26e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:48Z), 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/ESA122469979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a49598e072844545a7c302aa27614b436b66c1411d5b86ded4d5e4504d3362. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:55Z), 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/ESA122469981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3789fd219e84b8ad0d1e968384ea33e6858d1dde4977e5acd6a25986c2ac2d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ESA122469984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff94be621b91b368e3cd22b064f8d88abb6716553b442a57937785801d1fe87. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ESA122469985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d096b7ba2062bbd1e598d97f487822a8c171bb4b4d3cded1b896ec7ccfe66ff. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:50Z), 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/ESA122469986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0624577560fb15775590482e1a481074c73480afaa8007da89a2e305786b77. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ESA122469987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25263b653b3b83221f2de5ee85a67a76f4a97fd9247bf80848bec299f9060e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ESA122469988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb651983fc9ed44dacd68e21597e6f0118eed0ee40b8bd8cc8a2f3ed5d08ac7a0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:56Z), 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/ESA122469990.
E Difícil a Gente Aceita a Palavra a Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e3cf8f40908e969099bc024c72bfb3c3fa4d3a87bf32c2cde49108f5b5e9a1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA122469991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d073750713bd0a8760516f8ea404378e1c110d79fa4b58c51bdd4c192fead5b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:40Z), 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/ESA122469992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3631bb02de16594cf043770dd5fc440cca9489035f47008c168b1198a6c4fc3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:10Z), 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/ESA122469993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229c3dfdfb088b89d5232c22d5c6c56a1c78cb8cf4e6521b0172a9c5883625ce. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:18Z), 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/ESA122469994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938bad6157eaff5e8a6de61467ef26044b38a7aef89910722b2e786a10304e46. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:31Z), 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/ESA122469995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a3dc97f44b8be37d1d5b8b2f4b09127af87c0ae425414b909665255b35a90. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ESA122469996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1274ef3897abe0146af267f26db8bc5bffa53a82f7c77d19a41e015e2423a373. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA122469997.