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 0x1272d674138dd52aa1fb2b39d5715db54017d9fe8615011a847979bdb910f57c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef567de-ded6-4994-8d5a-718137e03da8.json and https://artists.proofprofile.net/proofs/artist/5ef567de-ded6-4994-8d5a-718137e03da8.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 0xc56570bbe400b168c1e1d29b85c84818a587f9b6538260b7a99160acdf1b3534. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBGYQ9800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a69f14b5cdc0c70b17aa66c3bea34a80a4a181c1fadfbec67f8013990faceef. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBGYQ9800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d81cd2a2e4f292e6b65cee06fbb4ddf3301539e966fce737b824b14ad68106e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBGYQ9800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c84ab1b37f8fffa5f106a046b3f5a5512f4af8edec0d091a14382fd77eb834. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBGYQ9800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6663541c3c8160948b3852248b5188f71e693adb845da2bb35460163db478597. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ080300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dc0e9b513b601acb94e601cd51660088b34614e9e558d1c11ce904db29d3f2. 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/FRZ080300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce4ad6962ee48a6c775b7fca9e2071f4e21a6450b5b46d4ac71f5641ef7621. 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/FRZ080300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25af2ae32d5785395a27ecd72a981baa0e3dec806d9bfbd2587956f7529d92e. 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/FRZ080300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0f080cb68f2eb49e34ab3ef21cd37b675cf3c7ecdc4d2bd5d6b3e23ff8d04b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRZ080300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14a327bc293c09d78dd4486de5a76a39b13f974f9af3b46fab8d87c9294090f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZ080300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101ecd61bb90eef7efc5294df66db49f0dd920ca8c30a4dd98624bd58aa3ba12. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRN370220200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090a3a1f77bbbc066c9bde3c8720bf01e2922c5ac8cc2f4182a958c4dbb658c6. 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/FRZ080300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943aa1b15f6a690f4549289c2ca89d9ca3a272eeb78b8d16c6fe4214adb9e37d. 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/FRZ080300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb89a27448585ad909e520b6cc30b7d149792bf706d3f3b76958c7791169862. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W10605591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8fd7fd67246bfd1fab752c01bea482d0ab98038974f28f0f0afd0304f95c8d. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FR9W10605592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79abcc505d4e687a3ef7939e86b60c8eec20f1ac4361846b22d11aa30b623fb. 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/FR9W10605594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed95960db76393b7150d5423b6bb8d3bfa7845fb2aee92660ce78adb9ed0cefc. 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/FR9W10605598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518f4ac6db410f7f88ea09f88105695e5d32b66d1eecb3acf13a1e7e60ce68e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W10605600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced86f3155f699da35e8d4afc49850086ecaf8cb4f774e46aacd9ef995ddae43. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:59Z), 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/FR9W10605601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54920b2e92d994f1627ceb20307926fd2082a5cc86cd710507c60f7a0fb0e7a1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAGC2247206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468fc8b938992fc543cee7bcfc5664c8cafd8b55d4703db30e0cc93e9733eae1. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:31Z), 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/TCAGD2230138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8dd7554519f12ac9b1ae58f1a87a4faf8ef5cf35065c897cc3c2e21aca7937. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCAGD2230184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a02d1635c50b92d9367900baf72cfad5fc9b57a1a92d05376a02ee2376af0c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR6V80739489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9b25f96010f96c2ac06937be91f291cf9ce9187d859f445579c0465ec5d8e1. 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/FR6V80861103.