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 0x1665e8620d4e9caf17c0f20511949ff51ccf0df5fc17b5b39a99d76155325aa2. 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/fc8a7786-c2c3-4805-808c-7f19377847c5.json and https://artists.proofprofile.net/proofs/artist/fc8a7786-c2c3-4805-808c-7f19377847c5.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 0xff3b05a3d4747130efdca69b6611ae52e89a8f6842d270d24c55f5667f105079. 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/US25X2001271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c840ff12f8dc767ca2e33eb7d0c701964441781b7881d48cebd367c5bfc5603. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/US25X2101920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32890af2b7a54b2f2dd3bb147efee76b12d412d61d8b709f75d18eee8b6cf76. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:55Z), 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/US25X2101922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c454b6959bd40991d5c65341c52944af016bd60a7eefea3f7c140b2a0b694a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:40Z), 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/US23A1569341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ec99ce976dade83d80a717d60d26c3f6c1e5ef539359cb58a22d8696cb6a0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US23A1569398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5ef630d7c6d4a902e71530b3db9fdab0d793408fe033c20e4272d6748c0478. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:00:21Z), 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/US23A1569399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c4e9ac5c752d406a5c7328b059e0f09e46ab23582aa4350c8e3dc6456e81a0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:43:19Z), 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/US23A1569400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf000c5c94e5d824309e2817995013c98c45238766cde989849b09c08fdb941b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US23A1569401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1f200e2ada764fd4e19b731c8bd08d77c298d090ed1f20ce6db810ce74988. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2202618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c3c4f3d68ffac2003d320f916144567b0765e96f29cf5a6a55e9fa3c6052d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2202272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d345f3a4facd7833958cbace640458f381db899914c54f9081614a68c97abe6. 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/US2J72302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d1fc938f0ec61c790e67127074b65a65759ce11fa87135d7b9d583aed474dc. 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/QZMZ92160939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f09a8371032962cf9ab144cfc892bf043f3818afedb7eeb3b8fdacd4c3573e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFFG2105603.
Starve the Ego, Feed the Soul (Remix) (revision)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45bf059d4b2d2ad5ca977f9d8acd54628a561258f85a43d343341a267762c9. 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/QMFME2160513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1f200e2ada764fd4e19b731c8bd08d77c298d090ed1f20ce6db810ce74988. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM24S2202618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c3c4f3d68ffac2003d320f916144567b0765e96f29cf5a6a55e9fa3c6052d. 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/QM24S2202272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7603628ed2be18e66f9ef2226cd546fab43fd971b14cec49cd50ea90e10ba3b2. 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/QM24S2204427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deee903d07f9f37f2334015100da62ee41264c708900afece0b38d501f61c30. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US25X2001595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fa2eaa274363e086f42017edf1a28cf2a2cc9d7a5b4c3c889854ea40428126. 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/US25X2001596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc69199576f5e4894879af0986b3bf2f97c1a328672c6b50dee11e952bcf11d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QM24S2204425.
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