Holi () is a major Hindu festivalHoli 2023 Date, Rituals, and SignificanceHoli Hindu Festival of colours, love, and spring.The New Oxford Dictionary of English (1998) p. 874 "Holi /'həʊli:/ noun a Hi
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 0x600b73695f2f994c131df7eb05049b1b29d3cbbe3b920c7619a0fbf356605650. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c03a31b2-a0d4-49d4-921e-c891812b70a2.json and https://artists.proofprofile.net/proofs/artist/c03a31b2-a0d4-49d4-921e-c891812b70a2.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 0xf68648c715cebfb0a8d78c5e049d8d9eda1b3291d8fa5cc0a181437df064db3d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HUUM72100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c13ac898eff55cd32ff87657d3e7cd6dd9d0a370e2fac5a866dc5914a00f62c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:56Z), 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/HUUM72100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a33eefcf4ba79da2e6ca0719971e7007b08f2c01f6045fff46f4efe44b9c3db. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUUM72100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e27b4fc0753d6219b8c4c2237fbb1359696ddab6fade2a73535bba53f26d3d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/HUUM72100474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7e74bbe8bfc31343a022f6efaf898f900ab1397b7a9e8b9092ec73937b3be3. 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/HUUM72100475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1dd1049e0438cfc045cf279219a454d1454e12bd6b2c49471cadfa0c8f3fc. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:13Z), 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/HUUM72100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd6666274f934a90f3457ebd35de5f380a89965d1bbd231c87ccb872e4bec20. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HUUM72100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25fba0f488c2fcba8d83e4807cd5469b7a7a35810199c076df4f4217dea3010. 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/HUUM72400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06a55b3bd408b25cbf7ce2d6b58bd6cc5895ba2b8814eb0d47337a8d1a0cfb3. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:57Z), 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/HUUM72400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5113cec1892cb3faf0580f03e700ba8a98453843418d6bcc2d5181bc43889ab. 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/HUUM72400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f3bc5e868a1eb6e41d3b47e831ae485db4969bc0a37316f926b81d2362972d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:50:39Z), 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/HUUM72400062.