Indigo is a term used for a number of hues in the region of blue. The word comes from the ancient dye of the same name. The term "indigo" can refer to the color of the dye, various colors of fabric
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 0x2ac2ee934d4baa231b71a690bb150fdc3a4c87db23d021ef74f363c8a07d8097. 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/16ee7680-2ddb-49bb-b078-f9a14fde271c.json and https://artists.proofprofile.net/proofs/artist/16ee7680-2ddb-49bb-b078-f9a14fde271c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Czechia (feat. CA$HANOVA BULHAR & Patrik Love ICY L)
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 0xc933df6f4f35865dd1f0a2a898ea82e6791e05602ca4b0e59d362a0f5e5f88ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZM901800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79cb063331489dafdcf64d91fbb21ce3d8fb9aad77575f664f1a9186e2ad779. 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/CZM901800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad9cde4c49549fb5db5e03403faf6fa87d35d8f18b9a3c55c92a691c43f68a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:43:52Z), 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/CZA232000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a14a4959596c295eba623e065b940e9813619249544acc370f244367d43145. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CZA232100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495f8d51e7c0a8c06f8fcbe585eb854fdf31ba67cb791606f12d63ea71c59ff3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CZA232401035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323236a1f0daa8eb40a4672c6b64fc81c0bc1d84d50d19654de8197bfae2a102. 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/CZA232401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c21973a60e6d48d6a3634d7863b4d2706cc373c68ea7e51755a23bd7b0fcaf. 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/CZA232401037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e644ea8d6a99be6d4a35018b4db40b15bae94422f6705c0bdc1d9f4c00dfd1a. 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/CZA232401038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4a6d0c8ef02246dafdfe7030841efd243568215218bfec395434b0af9257de. 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/CZA232401039.
Out Of Site (feat. gav, The Musa & WesLi D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b385272c4f9fa195e82e1dd5a5e9202a602c55b20cf9d1e14e76eba67dc59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CZA232401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3d4186713f1beeca15a412ff5b1e412846c7cb4da7c8387640cd71c886e8c3. 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/CZA232401041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc769025b040c157d28034ae16fce33cbcddd7c6590f7ba636863200a75aa7494. 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/CZA232401042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd487733042a7d47048e1c3648fbad60715c0c85afc35b411d2fc7f9ccb3e54ca. 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/CZA232401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8190b306b726cbe3842036bfd6139770ff14f99175fed9864d10c3ae6916dd43. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CZA232401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f08310003f9162178c9978a3998dbc9f6797a655b115fd7e46fd8ba2c40a70. 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/CZA232401045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495f8d51e7c0a8c06f8fcbe585eb854fdf31ba67cb791606f12d63ea71c59ff3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CZA232401035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323236a1f0daa8eb40a4672c6b64fc81c0bc1d84d50d19654de8197bfae2a102. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CZA232401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c21973a60e6d48d6a3634d7863b4d2706cc373c68ea7e51755a23bd7b0fcaf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZA232401037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e644ea8d6a99be6d4a35018b4db40b15bae94422f6705c0bdc1d9f4c00dfd1a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA232401038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4a6d0c8ef02246dafdfe7030841efd243568215218bfec395434b0af9257de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZA232401039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b385272c4f9fa195e82e1dd5a5e9202a602c55b20cf9d1e14e76eba67dc59. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA232401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3d4186713f1beeca15a412ff5b1e412846c7cb4da7c8387640cd71c886e8c3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA232401041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc769025b040c157d28034ae16fce33cbcddd7c6590f7ba636863200a75aa7494. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA232401042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd487733042a7d47048e1c3648fbad60715c0c85afc35b411d2fc7f9ccb3e54ca. 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/CZA232401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8190b306b726cbe3842036bfd6139770ff14f99175fed9864d10c3ae6916dd43. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA232401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f08310003f9162178c9978a3998dbc9f6797a655b115fd7e46fd8ba2c40a70. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:20:00Z), 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/CZA232401045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fefbb8700cb4fcb186261df024b00823b6ac1c2ea583e58f6dff9b661593e7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CZA232500437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0c536615c4e82bbe4e09721360abd74249da10bb58eb085ac768f072589afa. 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/SKA012100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0454151177d5cc6d35ccd2bed9793f64956121bb4ac33ea9599a011aad0a377d. 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/CZUM72401203.