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 0xc6290d4694d59f07ae7047a222ab16608562ac9f3757acbb319dca525267af6f. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c235a91-49d2-4a99-bd49-c31628d59497.json and https://artists.proofprofile.net/proofs/artist/0c235a91-49d2-4a99-bd49-c31628d59497.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 0xb83e6796d875cc6849c30e77c26eeef5350a0132e2e09e619bb87fcf4527bbd6. 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/ES5702300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced76139a2efde894322076b889b601aa996afe8719afca1fb21c832bae48d28. 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/ES5702300218.
Volando en Diciembre Como una Estrella Fugaz
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 0xca5634ff38f03bc28bb47fe0ac9338fbb8109b873c8e3970722cf78ff4d28bbb. 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/QZNJX2169252.
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 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 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 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 0x314a76af7d0e32afb869d25ac86419adaa6aa3f0f86effbb5680d16cf8f60955. 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/GX3Q92320369.
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 0xdee6710223b1fff639d865e7078ad750fd7d9e50a2b9717b185b859c090bc23a. 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/FRX762190891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98121b8b2c208040191cb99be89e2a2a602c52a238dffa552cbb0c9dc0246ef. 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/QZGLM2188293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35765698c8c916fc6ac80757244dc18f4332ed50d3054e6b66a163ef0144c1d0. 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/QZGLM2147692.
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 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.