Roi or ROI may refer to: Music "Roi" (song), by Bilal Hassani, 2019 "Roi", a song by The Breeders from the 1993 album Last Splash "ROI", a single by VIDEOCLUB, 2018 People Alice Roi (born 1975
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 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 0x7505c486d655b5b05d2b470a2006fba980da829a87eaedd8458ab61c396a66e3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66b3fa51-a913-48ec-beef-123eebb0abe6.json and https://artists.proofprofile.net/proofs/artist/66b3fa51-a913-48ec-beef-123eebb0abe6.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 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 0x2aa50c8c55b35a238adce0430c86f7dd51c55c591b5b66c06f86d08361cd6326. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES5701700872.
When We Were Young (Operación Triunfo 2017)
When We Were Young - Operación Triunfo 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38caa54b7380538ac0a7a238bc7361c805650e0f10e7cec1deaf5a8f3d2b8a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5701700911.
There's Nothing Holdin' Me Back (Operación Triunfo 2017)
There's Nothing Holdin' Me Back - Operación Triunfo 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea0b1c65ed7a0b6c9063d30b3ac0ca8598ab524537b0d5e9ca05c5d85dc5e3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ES5701700923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc396fd821e0d95f459c350f7c8b66b7757dcb8874e7dc430bb6a0385675b5385. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES5701701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d194e9f33656e2092199a280aad7c8b31ee253ad794a395f8b4f34f0d0c97e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5701701133.
Versace On The Floor (Operación Triunfo 2017)
When I Was Your Man (Operación Triunfo 2017)
When I Was Your Man - Operación Triunfo 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3753cdf16d41a9d9e7a78f70a1617c9589ebf803ec3219e93d1b7c9e2da3930b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/ES5701701224.
Robarte Un Beso (Operación Triunfo 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a51f91deefe013800eff9714f55f8cf11a1bb7872a9d4bbfe0570709d2195. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5701701255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e05bcb7ff002117afe20bb6f49c1abfb1915d61f3ed805099b26917bdb971f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES5701800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00484066dc371b084f00d7bcf9cbf6a3c48023924d1813d6d743e1eec99a32a1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES5701900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5346794672515056a4ef5810897a3fd8e32b4516598ec8257d217739ced954. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ES5701900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4634c7fc982bcf7e33fe360a521c46640a1f9045c4147f51c715ea25afeb2. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ES5701900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00484066dc371b084f00d7bcf9cbf6a3c48023924d1813d6d743e1eec99a32a1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5701900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cdd1cf0a99da3a7c6bbb455baf8247327844a8e943bdf024c46e396ac3379f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5701900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9930246b4517e7e085e7b9b703f6aea0d9bbe9f5c3b68a4e8994f3d00a9d94c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES5701900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe877efacb405fc214b19c010050babca89fa594d5c36e7dc06c8b4f22e9e0. 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/ES5701800459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727700782d5232b221ef2cec3e268acb36a92e197e25db0efe096b6beab98f69. 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/ES5701901649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad5d8f0c91b3b362287e06225a51ce4ae1966c709b25dfd74b3d7f6f18de7e. 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/ES5702001983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f632dfebaf3fbff0892d6f773a4f1b1144c5958e5fca9325c19a9bc9418c010. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES5152200993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7573ae91664b143e5cfec0c4515f04f2cbdc7b3353e7a22582aa2b11b84f6c74. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES5152300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752c4e45c9e9ed32b486a164bed574f6e4a5434b705a34690a57283b180fd79b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/ES5152300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf33fb88d538aef40b6b1a327758d45ec2080ce268928f354270109a3e3756. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5701701189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8cdb07001965218f5d1276347a853862f7903c59550368baf9efab0ea7eb64. 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/QZGLS2356062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c33a052485067ca6de7d57455ebf4d2ebbd584afefc5418b98480894cc343. 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/QZW9L2441250.