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 0x36dbfc04c209464e620d09e331af5e159f93059c35853162b2d0898256fe4e48. 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/19f7669b-88e5-4e48-947f-bcc9e379280e.json and https://artists.proofprofile.net/proofs/artist/19f7669b-88e5-4e48-947f-bcc9e379280e.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 0x2c241fba0b3a31fba0efce12faf6b34ea8565c843666f683f3a1592c011e01c8. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QM24S2004432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623948e7d2f29f256defe5833fbba126e00f1d0cc697ca9c0d5b21e6978ffbb3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:26Z), 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/NLRD51952726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd609db115fa63085196c5cd0f08502653bbefd15189786ad348c3adbb97bbf1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:26Z), 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/QZNMV2080228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9114b55965651222b5c80b1048484aa7fa052e97a585789a0d838d16c1c5f97. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNN32192898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf97c68a1daa230df3ba0db300cdf852ca0cd38c70a271a300ea7094705945. 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/QZNMW2234549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacff4aa1838c9534bc761911ced0b5e4a48926366b9044d035bc326c491fa21. 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/QZL382254133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ee37e44e9c4302350450dfc5f60d676e315a821afa14ded4077101ff01422e. 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/QZNMT2274280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc646495dc505709b66b1ce950af190bea794eeeeb6595589d7072cbc25bedba7. 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/QZNMU2113041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160f97d3fecae55e876895b91229dd28abc6be289dd59e47118c92dab3af22ed. 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/QZNMW2234552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe2e42ae1375123c2f48995975a4beb17a1c46f893b675369d7a00e43d1c82f. 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/QZNMT2199970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf666ae003a05dc6da6915315fd2b5a4e011bb26540689e791e537a22dad664c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:43Z), 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/QZJG52337213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde223a81d8d926dbf11662cce06a834fb096c82fb91842f0a147fa424dc60a52. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZMEV2332672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7451c58f37c85752e66dab84964aca1aea741ee7553549bb1ebb2501cb4167a. 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/QM3DF2281661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7451c58f37c85752e66dab84964aca1aea741ee7553549bb1ebb2501cb4167a. 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/QM3DF2281661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9efe341840d5732eb659862f018944f77242eaa6487e941b5a1ac8ea8e36e4f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2281678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49db2c7b1dc78f03ba969b151125782ac51e4850c46fab469d75f03ae67bd260. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZLL92441656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf303de856c4b76aef8bc45681a68951384ddffd2609ba699d65ad599be451e9d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNB82476852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc95f80f888b7b6c6694bde0b6982ae92f197486b08384c5bcc7b629fc8ffd0. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZNB82476853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0335024f6e9e9d262b05b32cc85238b90a5dce5678581e52f313d602beb30c. 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/QZNMY2484079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09afce6df53bdde2de6143305e799e723b2af2441e4a271ced3979125a2ab205. 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/QZNB82598193.