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 0x71078ba54ea8fa00a3feb47956e9f9c7d35fb83c1e30a9980b770a462d16652a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69a12f4c-ffaa-485c-9d69-0842dfdcb095.json and https://artists.proofprofile.net/proofs/artist/69a12f4c-ffaa-485c-9d69-0842dfdcb095.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 0x4bfb1fba8e8fbd765fc0a8160475a9a60f3d2bafb90b2d10044cb78bac1d0a27. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFYY2128048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc60c38bfda4dfa9a83ee747208f66caff03c055e28ee1fddd6aa54ad47102. 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/QZES52195637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e23b4c564ea6693776a448b756decbd9dcb71a874b854671110d2868945b84. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESA012189755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d6ed0d5eb69ce8adf98e597a51778b67caad86d33dda5e11fa0514c0d99b8e. 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/ESA092314993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75922555954e69f44a4f6955b7bc64a8361de8fa4ee8c23cca92e2099062d756. 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/ESA092317011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98121b8b2c208040191cb99be89e2a2a602c52a238dffa552cbb0c9dc0246ef. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZGLM2188293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f394cdbce0442d96e09d0aba4edaaf0abe37c0ae5ad7afd6408ade6ddd024. 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/ESA012152842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59db38232e1a51e4b4026c378d0b0f12192e827323b8cf0464e90470f3fc6d3e. 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/ESA012209188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0470ec4e15ff2220d7c6a53b642da855116636aea974bdc798bb7bcbeaa9e963. 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/ESA011543339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6875afbfdc51377ea58fd9f2be14d00151b2ea9621ba70ed578fc95a69fecc. 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/ESA011582076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670d20cc9733f0522bf3182b229f9afeaea1cef3d1b63060551a8d3846d72f1. 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/ESA012209191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb04ede8024f68933740fc54a8b2f07e08447a5b31b5c298cf2359c41e8c8bd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:36:43Z), 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/ESA012209187.
Lo que nunca te dije (The Blame V.2, demos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca6920012aae6252ad38d3df309c8ee8e9aaf068aabbef6307b99260b78fdb4. 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/ES75E2303324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeea5917544c8d08adac375e1639db6202f1f33b07595f94cca04e23c44ba24. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESA092303792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60198450bb1b3d3f8fc441be131074209c9392d9d16b1470f4740b5c98da185. 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/ESA092231339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025a366b41a61e49d8f0455b53a084a54889e5740a71406418152f592561cef. 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/ESA092224545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34636cc7dfcd58247a9b4de37ae9258f3819eea91b8f6ac51b110f14d87065d4. 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/ESA011553012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0470ec4e15ff2220d7c6a53b642da855116636aea974bdc798bb7bcbeaa9e963. 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/ESA011543339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48a3a92ca41813bf1f34cca4c1ad003bc9d2ddb7e068227adf43a0090cffe4c. 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/QZHZ62242464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afc979a30736f3310ded4e8be2b30a1d69b66c39af4203e0f69ebf4eafaf3b4. 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/QZGLS2271015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976d1cabfd5fc10f68c7c725404aa57bb132af5e53fa77c8de122f4357107c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:14:11Z), 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/QZHZ52281673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38271fd286d9967145095e71d4b34ac300166544443af06729f99912779b0947. 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/QZHZ62242471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1857f56360f159cb097d9227df5694d29fb4b2e6f9beff60628ddfd4351c855. 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/QZHZ32174691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61631cdbae379a3a72993e03cf933986bb1ba1f5efe40e917a27913df80580. 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/QZHZ32174694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36ddc7be982a3804dff94f2d9467bee77e892d6f841329afb211235501b351c. 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/ESA012217555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d1a4a87fd8c1df3562a5c79a06f52931847ca7bc7744f7970bad0e61b2dc9. 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/ES75E2402575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7471cc685e0aca70ef6d2c03cbeefd3496001a53581dfea2cf5326e0b3c3f. 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/ES75E2403659.