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 0xe025ace1fecb0aaf2036c7b0a2d621891c5fc35597350146c3ced4c4879e744d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3ce7606-b77a-4db8-ae3a-0aadee57b1c8.json and https://artists.proofprofile.net/proofs/artist/e3ce7606-b77a-4db8-ae3a-0aadee57b1c8.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 0x8b13bc47301561a0c90c23f76a672e2acf1e5ed98c2ead27f76747660b5a67ba. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBSMU6156288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865508ac92b238c8706302ef30ed886da8021c628a5a4ca1a492b1658f3a6fcb. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:46:33Z), 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/GBSMU8448003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505b130b2702c608a9f6d07485a654b1dd1472a55f997c542c806999a0294c8. 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/QZHN62189053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b67be45e211be7775fef356f6d1b18c7fb97e3cba9778b6d033d8e9620636. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWU2119001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7102c9e906df34e7c7d263f8195ac213ae0eeb15ddc9b7a34d2fecc52661aeda. 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/QZNWU2119002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e339d22bd861237acaa4f0fbdf0c2e9eecdec152481833d252b46466f1f66. 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/QZNWU2119003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c6e0e8dbab77e02ae7b7c8c1713c0ea0bd21a5c46a9e3e823da02b27bfb480. 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/QZNWU2119004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159cb0dddb8cbbf0570d7e31013cec006a3ceafcb92ef11b47acc49d52e35c4b. 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/QZNWU2119005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f25d4bf7164b53b83aacd4e5e5f372d06ef839d565cab0f95a1a07108357561. 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/QZNWU2119006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c08ec002ef755ed1b5ed528357ebf77b6e23c48a01fd1d074da5cedb85d37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA72259028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81926fac724a2ad705e28b1f6f2ab2694e37e26aef7a81767ba21cd1b7792d6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32336009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db00d22e0ddf1f5df6a3164f7ba24527d2ffefcdbc7c3676adf87543b8b015. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6M2312153.
LA RAMBLA (feat. INCE, Manali, Ronny167 & Bastio167)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805f2ae927610fc841d3e1010275ccdf7e94f2210ac94472b7f1497beb1076b7. 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/US39N2305552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe86fa75be86fef7bf70ab7d764916ee71a422ed48beb9b90df175e1360606c. 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/US39N2301979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e32e4dd6de6dbca93bdfeba8975e2bd0e987cada23b9786eb9bc7391b274265. 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/ITDI32300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc86ebe71ae322c0ed75a54346ba24fbd66888ee06710eee703b955d9825966. 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/IT7TD1900190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf192e46f1470c8bfd741ea17374720108ac18b509dfe2f9b74c01f943813fb4a. 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/US39N2305551.
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 0xc6f718d166bbd7eec8f781fe2470a00b1e128ea60c12cf45e0ba7ae9ed31aacf. 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/QZNWT2110715.