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 0xe56b1867c2e4bf75488506cbaa605c5f7262a241802a2acaa4f0d92efd4434b2. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc5d6234-93a1-4fa6-8bf4-5184df6e0a38.json and https://artists.proofprofile.net/proofs/artist/bc5d6234-93a1-4fa6-8bf4-5184df6e0a38.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 0x08e3180f40ae80fb830f6fd717e91adb75bf041a47ee38d2c5b8cd9701d10eed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWDD2503630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037bc874e6305f3ef1398a3da2b17cfe037342f8e557ab24a14a0209a6cca369. 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/QZWDD2503637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae0cd365c1053abfa28ae0b41e3dbddc2d3be236d197a90b96f86d574afd792. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWDD2503641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea270737dc0d93774d562dcb6a0bc0192ada20ec50b4b0ebbd2ad4bc0dc00c9. 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/QZWDD2503646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cc23d24d16758277fdb54cc12982adda2f3e776d0cb927142f0f19a5d23523. 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/QZWDD2503653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16abe92fa1c64d93f3565418d6c6576aa943c94c704f877160bf6b41295aed3a. 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/QZWDD2503656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc987a5d0efc01c8a5d4bef84e0cc861a2e3da10dc357913b9c1607e4567babf0. 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/QZWDD2503660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0184b9f86646c2640cf35fc1562ef68b3346f3c59008b1e9f05f370ab921c7ef. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWDD2503662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b033c959dcbcec28cabefa4ec3160c92958d1c17017f1128a5b31729f3cc0a8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWDD2503664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4b6653962e8066359281e3779981238389ab36d5dc5469b6636d4dc9813251. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:00Z), 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/QZWDD2563641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8651aeec3a2af0b736441df181681e38954323682aa7d9f1e6846bee0754cb. 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/QZWDD2563642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597cf62ce8aea2e04fc9865f93e6f1388c1147293d5dc1048481e74ab568a21c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDD2563645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572df7ce6f15747eadb0c1ec3664adab4b4631eecb17df569a84d56e573c644. 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/QZWDD2563646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ae63186181071296651f22d34e7d81348e3f3f00d51402fbac9874125f09f. 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/QZWDD2566872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefff4ca10a054ae0f3eedf60fd44fcc9136f87d2ca06ad8fe7403bce72d51c2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:52Z), 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/QZWDD2566875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aecd3fa2db226ee724e8ef23c49211da6c5787ce95a0f66e7de261132792ba. 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/QZWDD2566876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0aeac895da3eb096cc6df7857547eb24272bcb6cf24c7152e841518fcd4c30. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:28Z), 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/QZWDD2566877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84614c173542b3f78f2229dea1f46b73dc88fb5706da65394d34962620f308d4. 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/QZWDD2566879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf937710d96af544beabc9cfd8081cd375d1af043b68497f9ca7b560cc5bdc59. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZWDD2566880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7be9bd435b8f5cd4532e077adbcb0292242cd006f968ca0fcd1156b0d864fd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:31:57Z), 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/QZWDD2566881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d9ac41a8b405c3e751e494be8abdd79479c958bed23cb2682f920af52765c5. 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/QZWDE2509397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fef9d94b5219d5229528e568f6a4a695ed228f3762cc2c637c5df556ca5694. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:37:10Z), 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/QZWDE2509398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645cb79959eea732d0bd5d5036f02f6579efa7d2604893f21c32461a18dd40d3. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWDE2509399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f55d3fc7d81215ce6f00af344a2c6f25d15d531c455ed71835e34110393f5a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:21Z), 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/QZWDE2509400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc15d430486f02b0b5fa576d511f81147104b64f9667ea170d80e512aa3849d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:03:12Z), 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/QZWDE2509402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccc0500696f6f89c13c56c1ec02fa5787859c66754f19ab83485a803b8e7505. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:38Z), 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/QZWDE2509403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18e78f3c560c44809daef681e39efeecd177b0bd284908f4f59e63ce0211bf. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GX53U2516543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30d675adf5fc2c6d8902885ae3c5d403228129908f2355b16ea82259235642c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:17:27Z), 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/GX53U2516544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36096c80c3bc784872c7583731cad5518cf8030c25dcc413131fc04c4a609f2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GX53U2516545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf955415aa6f68514607efe2300aa4a38d1cdd2c0ccb9119f499c751697a01bf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GX53U2516549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46fdc2a164bf82dd18f5f1efcd38457c6c431c847b85f819cc9d2394874b78d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2516550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea50ebe8d0dba198472490313e9cc406597c61b0d63b366981d40a07692d385. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:53:20Z), 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/GX53U2516551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09bccfbbb96918d699b3c5fd7f5e5615b6d94a8bb7dab52d3bd2d1d9191da5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2516553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1357893f145e47c8fc956b88cda62b05b71a7068b3a7bc4209b35fbb92ccefa. 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/GX53U2516556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0c913e74429f3ac2fed69edf1e337f153ca02e8f94c9f392fd7e77752662d. 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/GX53U2535202.