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 0x4edfaf22119ce61429b3fb0496ca8c5f824966ea04ee0d7068095ca85f038c96. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26b2d753-a151-418b-8c26-777dfeaa412b.json and https://artists.proofprofile.net/proofs/artist/26b2d753-a151-418b-8c26-777dfeaa412b.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 0xd886a44dd7f839a0d25f58e466e4ec5dde6477f754d479c287b1f4fb90015fcd. 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/US8JA1606002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e4145556c1f838634b9ca95a9b20b682346b160f6b64f48e18431479575568. 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/US8JA1606006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f0e73962f09afc83f9c5f552a49b9b9eeee996fe2dfb5161f49cc43ce08f3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US8JA1606011.
Journey to Golden: 5th Anniversary Edition (2021 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d71569276386125cb206f71f1673c45dfd6387cc6bfaf05a78981809c7936cb. 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/US8JA1751002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477df3fc3f09921126e06a2dff6719d544f9c2fec1dbd5ea5cbb326cb5b123d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:06Z), 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/TCAFU2184616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c287e4ac01cd660a935a3f941e16e75831d1990845e678b4811aa65152569be. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US8JA1751005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4996100be5dfab163d9a57646f31e3f5a0209db74c9865c88e25b05cb738d3d0. 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/US8JA1751006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284504edb5f5b2a93efedc11c2e0ce3554833f314b66337c23c165d423aeda31. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US8JA1751007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3bc0ffeee82e011c4b04cc9df56efcf0a75a6f88555e29995101ac2a731243. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZEB2338362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccaa15cf3acc73fae80de69768d2d3366b291d8e12b2f0b2e4251f93237b028. 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/QZZEB2390039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c5bfdbfa5d0140aeb4a9dcc34a2f4815cc392daff6924369d931bc58a5f8cf. 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/QZZEB2390016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90365784753bba57cf8d68a4350829c992b6e28b3450ab8bfb8a64b869dd963a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZEB2398138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4516380a6bf35e818f1952875c21b50207ce49ea75f72d198e305405a2cf6f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZEB2398165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d181122e51851d4ce98e01b0cd49352a073e595cbfe64a25d981e4dd566f251. 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/QZZEB2398173.
People Make The World Go Round Interlude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e833fdddf17ab95eddee83067dc6dbd687edebba577506fad1a3c7d22887aa0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZEB2398197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0882dea9106fdc44c65d5586c45c36f5699408eb0782e45856b6e66a4020bcc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZEB2398214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95906ab9dcdb79afba40c13455322d918054bc6fd67c2efad9896994df00322a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZZEB2390030.
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 0xbb4080a95a92350aa067d184989936b27962ed09c266cf7f2ba0bbe4fe8a8583. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZZEB2398157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca91c8be9e3bf2dd26e8ad2f04379d05c32f0c85db5264bd1a4b2c61ee86b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USQY51153260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a709949a1c4efb79a787b3a16e134078e7685e71a8f1a331108e918e57fa31f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1059571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ff6f8df3e70663d50d26eb2344d5eee2fc8a94dcf7bdb28462df044b3821d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US5ED1500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922f46990406c916343b6db8e933301c4d3d41d3a927dcb9f94e109cfe0811ed. 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/USKO11680473.
Back Together Again - Richard Earnshaw Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c9584ae51d6bdbd2c8b4a1fd96f23f51c51eb60fd6473889aa8e46cd356a9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB7GV1590012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a25b7af05f636f85c1163d92f8f2c3825fb72cde2fb75fe5697517eb72e6e4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:35:06Z), 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/QM2LC1500001.