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 0x67ff0b034820cccee95f9778e0e08a0cdb2f85c3c95cfd430627a9afea63513a. 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/df871d02-35ac-4283-bc1a-8180e939f689.json and https://artists.proofprofile.net/proofs/artist/df871d02-35ac-4283-bc1a-8180e939f689.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 0x80d7a67afc9ba37d7120a6db7e58970c92a1504984ce2322e668143a1103ecae. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:30:19Z), 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/FRX201905606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459861442d39a3b327e97ba29dbac8764b498b0938cd91be86eb04a7c61007c7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:54Z), 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/FRX281984485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23d66771b1282116c1c301ff7567b587821ebabdba5fd10321f84c14f2cfec8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FRX281976962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af7b7dc26d68cddeaa4415fd1ab2541de6b347bb8d7909bf9141601a24a30af. 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/FRX281977843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95c52604ee2a2d0d774695fbcfc4a661eafe560a630efacdf65faf11195d31d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX281977845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048387251fc28ed9be887d2f7f58e8a49780c50144fd287541a80d07c7f36769. 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/FRX281977847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5494b34ec12d07d5db86bc5120b927365185a99fc1ea00d9117ff1754900a7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX281977851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff038eeaf6de277cf9a7c6dce5cd94b1a5754c7324d2dc06d19cd6f92f2b82de. 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/FRX281950795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342afeb626dc7024ba1da491d4f773a200a68701d6eabb90cdfeda23b63ed421. 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/FRX872006264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eedddf59bae50cb0d095427e94d1cae5655a9d78a8c883ae6327ff01c865e9. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:42:01Z), 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/RUA582104471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b835e02ee87b882d755f0d5f8077c939121c3e5959a34b6ae0e2b6e48105148. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:36:12Z), 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/RUA1D2116859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abde4b16c2f36809c71b99019d8dcb2c7307f983e18c68afdc46aed355b575. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:29:44Z), 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/RUA1D2150878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8d4b12ede4a32d77bdf945ef14d0ef9b3fef3ff0088216f5155765ee2c320d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/SMRUS0069880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937fd3387070aa37d2fa99967197902e82c66e6663cee16ae3204e24d8215de. 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/SMRUS0072387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a2d4ab9523d78cc53d59dc98dbf0d33980b78ad6c36bef47355f18bce0b68. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA1D2309262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c709d35e6fd5177e66d0907bd6fd679fda268a42f888bbfdf11d5e7583f5691. 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/FRX452387174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c70754ab9a2d1df57538a3d7819cd25a844f7aa82c45dfd8dec5eec2bbbe02. 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/RUA1D2449404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d45c4f75a6009ebf724fccf34ae486a06c28e4e449605b0bed58bd3a515efa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2449408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8852c3ad2d153374f5dc5640e0827a5b2af10d67de465cc0c33140204187d037. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:13Z), 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/RUA1D2449421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8046e3656a79e3f1bc64a9d800e133328c975aed6a9030a113fd8be121ee5fc7. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:47Z), 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/SMRUS0078576.