Arco Iris (Spanish: rainbow) or Arco-Íris (Portuguese, 'rainbow') may refer to: Places Arco-Íris, São Paulo, Brazil Arco Iris, Panama Music Arco Iris (band), an Argentinian rock group, and the name
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 0x117cef45d7e0311c12cf6209b6997ed9a0165c1dc083fc4627db40cd17e962ad. 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/34dc9147-47eb-43c7-b6c4-fb7b052fc677.json and https://artists.proofprofile.net/proofs/artist/34dc9147-47eb-43c7-b6c4-fb7b052fc677.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cinco Décadas de Rock Argentino: 1966 - 2016
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 0xe9ed98160935819f57996aaa784b21e2564f7cb829c7d118a6ffe961a6e6c2ff. 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/ARFSB0600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e170b0f170eee733bcb19c9679c49d803a26bac58c662eb86fae372f80d1c. 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/ARF109902852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8. 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/ARF109902696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb750daa964f4c667e104d28e1bdcba42448163dbba00f400f6cbf5c997a394. 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/ARF109500364.
Cinco Décadas de Rock Argentino: Primera Década 1966 - 1976
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed98160935819f57996aaa784b21e2564f7cb829c7d118a6ffe961a6e6c2ff. 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/ARFSB0600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232004493de995c81225bb860b82dd40d446acbc5c9ad2bfdf8f387b295449c6. 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/ARF036900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dfaa71ffce167d8066520c589e053ae5d447c8fbd15a3148d2a3f37ae4e150. 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/ARXP71600194.
Los Elementales (Fuerzas Magicas de la Naturaleza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80355f9f9fcdbcf8a85a015e4b15b554cd38e59d0a9d3a2904e6ad8a08c3f3f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ARXP71800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06543b0f226bd441fac8e38408853ef9fdb9234e8118b2f1941f59e34546069b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARXP71600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e58ecf41452e59b91d5b1b714dfe4b10f3bc267e4dbc95584ffbed3d71e66e. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:41:46Z), 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/ARXP71600210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c5f16a050215b3c897ca4f23b7eead2b3fbfc927cffd3a83cca9658a702c1. 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/ARXP71600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb39885ce9348378fe4fd4ad5df1380c015b1dcd7688114af4ad94a9504ecf. 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/ARXP71600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca832c0dc72b4398b5ca9bd9681f574f76526ed0510ad0edc184e77b11aecf8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ARXP71600214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3159770ee8c1285ce9cb06ccef30126a307a192b01b3b815b37b7caf4900be. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:43Z), 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/ARXP71600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae414f0c94b53e465818741859f01d51f266135467c0074dd64214fd57a19db. 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/ARXP71600216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4a63ca3866db80e18770cbdc43156c20c2a7772e03fde41e28e6dadc18723e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ARXP71800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9264d37d3c3711d80eeccabb858816672bcc9a84f770e63446c8c48181018. 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/ARXP71800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae8a9fc8e229e996e50588ccd97ebc27a711cb01653982dafe955bab4baab07. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ARXP71800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ef511183db66eed51a705349081d309b5e1074a369b7581b15e644dfa06de4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ARXP71800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c865c3c08d9701ae89309c632c8ef52b820249b38cea9a609d0eb106895012. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5020400153.
The Inkas Go Classics: Arround the World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3b4dbd99729b1474dde491422f2eb9ecc04647063ee73fdc419eece4c7775. 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/PEMG99601009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652eb7c0ca3330410b6f6d200995ed5fa8cec88345a081afbadd12fde3d0de5. 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/PEMG99601011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bac205ab51b7acceb7fced1f101fc36ccd9928cd651d0c4db91b423a28e62e. 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/QM6DC1321247.
The Cosmic Trip: Psychedelia & Progressive Rock In South America
Serie Mistura de Ritmos: Mistura Andina, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab96123f3986db04e9dee6d80c414a03818a70fabf546ed192d6d406eb4c33b0. 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/PEMG99701005.
Los Mejores Del Folklore Latinoamericano
Concierto Andino: The Highlanders Groups From The Andes