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 0x34e2a8ef207d181366786f53a2b3c4974056efc84df94ad1f6145d2e8e832b00. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1807327-0740-460d-ab85-7cf5a3889081.json and https://artists.proofprofile.net/proofs/artist/b1807327-0740-460d-ab85-7cf5a3889081.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 0xb492ef5655035c2edd81fc0d2714b206ccecba43cdd06e72b0c215727eae0f07. 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/QZNWR2557061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7c3efcfc34b4341d0895429bc5bb49e6c1cb180c01a7a32e62d22b366fe4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWR2557063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb74387e83eb3ec4bbe614c941e06e4d40f7d4e862fbce8a4bc934e72d4c9e2. 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/QZNWR2557064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cff42e9174960c52c13bdc16b281419fdda6e7d0526e9338d92e69efde6537. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWR2557066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8b28d0d7e9ad98335e7515c605e34f7d35c43b1e1f1646dc9e79b7dd67ab6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:55:38Z), 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/QZPLR2544144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1535962aef8d867ec208d3d4745eeee3b222fd28827e1c26457ea7d6eca9fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZPLR2544145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc4c594fd02f84bc5db90f54509a4b98cee432dda2d87d01311042f351bd76e. 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/QZPLR2544146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2999eacd3e5fd9554afffe631638008015b05e7f363afef210917052a4546e5d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPLR2544147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaed2698dd25b03196893dc0bfdc924de9e18775150a6d48eb445f505a65397. 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/QZPLR2544148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf3982a4fcdb25545aca559a81a763b08f34f80d8bfcfcf09bdf85af949c05d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZPLR2544149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92af560f30d65bcb42b7fdb4add32cc95b0f089b3c26d421d1904d9f3f4c23ac. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZPLR2544150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50602a9a79ed61b8da354fa05b966801565e11568db0fece6a420b19e0cdea1. 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/QZPLR2544151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396a03960260624c6989b012d7023f3fa65fb836fe809b9b3155a8f06e1e5da2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZPLR2544152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72da1a61828e1f23f1ce5575ea5aa47ebe0d63f0e9f80dfb8e9f0084c547ea64. 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/QZPLR2544153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c227097a51f02dd10d12b967c9cd11fcfe911606753c9553b11d0abc682f08d. 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/QZPLR2544154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f731b5d0267651a9194cd0d5d72e50cd42a4a931ae71da27c82f5567d96378a. 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/QZPLR2544155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e361946ee610f13e4d03b86c2bd3a2c84798bf95018631f44afd124d0fec20. 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/QZPLR2544156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc542790bbca4153d648e7249b09f9ba357032d9b7ca72bdd40a45a397055ea4. 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/QZPLR2544157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcd30739d10cd2b1763294bd6821611bd96f351d6b6e97aad38ae960dfd8ef7. 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/QZPLR2544158.