1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x25fe3b7516634d757538ff0545bdd5cc530b9b985e0535e66263e9a8a06285b3. 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/e170badf-a692-4d0c-bf98-d4de77edd0eb.json and https://artists.proofprofile.net/proofs/artist/e170badf-a692-4d0c-bf98-d4de77edd0eb.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 → block OTSBitcoinBlock must exist at that height 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 0x54699b22ea8580bd22bbd034b90671f45d808c4174b7124993205fc42250a990. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA1H2002632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6e3cf11950c757e81278efeb288506a56404aed0219ad78e32784983176f89. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUA1H1927444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99096b5ef938e9649ee091201d72dfbe0d44033d12ae9318097b371369210b87. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/CA5KR2177561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76529ce8feccbcbc4bad48a072cf73f316f480856971eb5b98d6f2c02a05e1ea. 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/CA5KR2133064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568449e87aa22085e5803aaccb057a1a125fe0a5f719dc1ebdff0cee293c5167. 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/CA5KR2173429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5c28547e366759bd7664cb9af369820cdbbb8d54dff7064a9d54c681cb33b0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CA5KR0012665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e40b39de7f19013dbbbb39bbb56f21a3cd8a588f0c6a83edb023f0882d7b1. 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/CA5KR2203268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b70ccb1ae87c574dc1676124acc6652d5f62e3633939ef27e40289331c08c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR2294856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d1a22da35c5aadc2564c736c24338f7a4bb729cf06c32f9b64e16b27db846. 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/CA5KR2396050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1970fd376f47f5bcaaf12b097a301bdc4183effdcee3c14241af311edb4fb7db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:59Z), 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/CA5KR2425581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b70ccb1ae87c574dc1676124acc6652d5f62e3633939ef27e40289331c08c. 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/CA5KR2294856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbda5ef425e8e4c86603aa0c20345415611410ea87ca20336887a73483551969. 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/CA5KR2458393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e6c078e2d0d8ad0b1c822287618e3460f6de58b8e7e0c103ed86e343a38462. 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/CA5KR2482391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9626147ce7b206f95d4d9daa3c782ac00f2a043844ee8f8cb641df0be2fd5a48. 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/QZG2X2402936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a1faadba58bbf04a27da50a0fe367f4809d7cb9d74ffe407a735e113bf3ad. 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/QZG2X2407413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa483bd1ac59cf69d435426d605ae4c95c1f9e6a5e5597dd68baef2f8d5b7cb8. 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/QZG2X2410089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1218cc333f60f770c618be0215e12fe81bc7237d2f9c5e63a74e1f6e01e26. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:56Z), 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/QZG2X2413333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c96d8ab574429be77f8b4a09f0116701038ff43d397803dbee0749297304166. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:30:40Z), 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/QZG2X2417266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9007cf3ba4befe7cfe06a27a2b811f7f5065c19baf702e3c57521257a1efb027. 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/QZG2X2419340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99819fb051f6f6d9e0bd2e253fe06d00869a8735945d03b66d4afad7fb690b8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:25Z), 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/QZG2X2422267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c266010a197c1248dfd96a98d6dd80f74733f2feceb646fe9ce2821e8fd8316. 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/QZG2X2500831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e452693ff825248ad007c1f28dedbcffb877c2225cec74f8ecd9ec608dfcf47. 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/QZZ8A2527953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e510b8c3d65337124ac3e5a0a6e20994c1b13cab68a31bb2b1ac0463f0b050. 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/QZG2X2505925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d656e41790d7331fe63bb723b640fcf4e266bcc9a5f7440d0b6848e276905. 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/QZ5AB2208934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9968ee5faabba8bd97ba97b34a8f444124131b08422e449b68cc1de07941c94. 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/QZHZ52182382.