Cyan () is the color between blue and green on the visible spectrum of light. It is evoked by light with a predominant wavelength between 500 and 520 nm, between the wavelengths of green and blue. In
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 0x0a93d2cb214b6447451cb1b22e37cce867f216cd82f56f4eedd0dab46b68d5a9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1a2c9df-d8b0-40a7-bde6-8b42e0cb1601.json and https://artists.proofprofile.net/proofs/artist/c1a2c9df-d8b0-40a7-bde6-8b42e0cb1601.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 0xea51f78f7c50a33f9d7182b99922106acbadedb24170fda9e33be7af44ca9cb2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES94B1300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffce44616f3d8024319042452c6658ca51cdac6c00f38f9487cab73db6b33ff. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES94B1300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70f48230f8b029a74b6eae4d1fab9e16c2a341e45c10b41a224e920bc690c01. 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/ES94B1300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad5f26111b9368b147fd11e24ea9e8c5ea8b528812c472fe6607d9584d7f10. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES94B1300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c123606cf4749f0d9d98390b090b8cc5e1f6ad5d47148d0b66fa1e5128124a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES94B1300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f64cd7736d4287226cbad3e277937a53b8bd56a748d15e48610c1a407cf3b. 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/ES94B1300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d69d38d665652e8bedae70de88de223bf7c0a92c9c7037dd65030dd23e93030. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES94B1300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be188dc06865e17d4a369d3455fede3d02ece9049a83f0cacc339997e85899. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES94B1300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd52ae81c15040f2539d508e72c816b104934acdd25684b6d659ff40db5176b. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES94B0900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2a9bbaa0f1efaf64cbe87858cc42dc06905b0d9b0fd10667bd687eb6f4cc1e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES94B0900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd96509cfb081225b58ebc6fffae266485446cc079cd4471cdc226e0810fc42c. 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/ES94B0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aacd06ebb441fa92bcb4bffb2cf8b04a8dae41a8e3c256dabaa8ebef785f70. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES94B0900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2016d3729607dfdf717af9ba25973c2d7eebfc0d697ec1c226b563624466f8fe. 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/ES94B0900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100935c3488f64a24384d2543adbeb361c700e3bdbdb6549cf785f5ccded9015. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES94B0900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89969a7d020af543f84196635330fff217e6a806861502f4c35b1309ad90bb. 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/ES94B0900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50619cef227b4ecc53e2411be33af4ce8c4bbfdaad62168c285a2eee557a90. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ES94B0900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c362108a90a51e8f75bd68963ce7ac5dc83cb9b99c1f928946ccdc1b3b0152. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES94B0900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccff74e2c2bafbae17a9f8bdc131247ce18c5ca5060d2eda17a5035e25c7fe3b. 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/ES94B0900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50249c60e47b63bc8465506384786b1ed121ff7fd8179c7d1b7cfa4e81fe74cb. 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/ESA012172374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a542d2c8395da0f636230a1f4eb63b34ec77c87f890736c69f1505509214104. 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/TCAHU2469410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd02f6033e384dbab57205326c1b1e9c1e04ed537cda43abae7bd0be6e71ec52. 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/TCAHU2469413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abefc8bce44efc5e8ffdc49d445621a8a4291548410fbbfefa34aa119b31bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHU2469417.
1970 La musica che gira intorno - I gruppi, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a31cbf73c4d8921dc78b05ea7d923fea5eea70136d676c1975149518cd712. 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/ITB006971254.
Blue Jeans (Original Motion Picture Soundtrack)