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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03970d1228675b1bd06abb2e511fe0c407dc45dbcba31e075a40012d4921283. 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/3bcdae92-10d4-4eca-af31-1f4e27567dbb.json and https://artists.proofprofile.net/proofs/artist/3bcdae92-10d4-4eca-af31-1f4e27567dbb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79917f2fa011fffcb8eb0b4e2b50d3aa1f060e521444888b3ef3e8f7e45587a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6Q2081465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd488692b2833a350b398a577ee0e640e53bd8f85346137d1453c0adb491a20db. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/NL4NL2111820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da848d06e99e022f04027626e6d7e042111857dd25cb799934f8187854c9ea7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZDA52253740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81efaadc37073c0a48a3d2c9d29240a94f7f92193b1fcc419dc1906904486c60. 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/QZTB82291445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa569a1c7426d5fda7469d4b7224017d0121c2b8a31c441275cd95b265fb775e0. 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/QZES82397501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba88ab3559ef32279d0b09621c09d128a60221385593a7c833180cf7da25c6d. 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/QZES92390391.
BiLLie Jean BiLLie Jean (Radio) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057a7987023808bf6ceeb525ffb0659777a10399dc96d0772d5b86d79edd0a04. 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/QZK6G2390953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866a3ae4cee569143c5020c7c3864e55e25c50b3ea5864833c1319a83a96aa52. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWX2368275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9455874de672884b4d22ee8363d81a61808713068b6d1082be99aabd4035ea. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTB92371971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f4defcdbdab64ba876ea9a11c74180d19a362207274682049eadbf8313f06. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZWFP2450645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e457852fcf96263d5df9019aecfff88d5348d7cb2974dd72bd76b1706d34ab. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZZ7N2488620.
Bassknock Productions Presents The Black Royal's Music
Bassknock Production Presents The Black Royal's Music 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd542ec5b171d600b3adf6674e2510e884c9b3630986d31e42e47771fa6f8c591. 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/QZMEQ2595216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070366e80f8a2fc2a237636d452310a0d785a7a820e5fb32fff47fb5cdbeb9d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZDA82507464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e6ea7d49a1f0b831669889a1a6aca5f350920ed1a4a8b5ea2b62de73575b0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZDA82507461.
Bassknock Productions Presents The Black Royal's Music 3 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd268ca41c5be3ad50602132d606941c6e808fa97d103319cc5b09700bccd7e7f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZTAT2582457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091d521bdbd56428b8e6c2010a778129bd3b4ba631c0424fdf55d8413b89703. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTAT2582460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded61bd35a107254b90948c7dfee71a1925fd66e2185d73d8922b180c9391e06. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTAT2582467.
Bassknock Productions Presents The Black Royal's Music 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea49ec6d0c38f5fd8af6360a1373610073c76bb92a81a224e3639e9e20a94560. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAT2582459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543082adf389163f57073977d0dd1334ca89d068751b8847702ca0a300d21fc. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZWFL2515433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0048bd3f2be4953f5ba7a6171d3469e566027637c566d2b306b49f21c239f0d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZWFL2515435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e33644718d051d13f1048289e281373cf453305fc74bd8d3d59f652a9890879. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZZ7V2491223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed7725ca78e4fcec7ae5a7ed3cad6b4e3e6569e7dff5e4544ee586a2b3b3047. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZMEQ2595219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a53c81781003ff650d40e27e7a5202a3158ef12f640272666eb027509b7f2e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTAT2582466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f66d29b665e84d0c0a843146a89489c21c2ff48b79751aa59c431094ee53fc. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZDA52252993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070366e80f8a2fc2a237636d452310a0d785a7a820e5fb32fff47fb5cdbeb9d. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/QZDA82507464.