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 0x1665e8610a7f6ad0492f5fc00239a6d1e25be59b8c3d5a4f3979b852d9d24045. 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/476c713d-19ea-4bba-8843-c33bde8224cd.json and https://artists.proofprofile.net/proofs/artist/476c713d-19ea-4bba-8843-c33bde8224cd.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 0xd20b59b5a1f75d545813a4051c91b1b9258eb52780c66a2c3f87a7abd1b9082b. 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/GBCPZ2322720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10a221e50eea5dcaf7218ba9811138c8c1a0041456e43de96ac466784412f58. 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/GBKQU2441932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dc9be44f84326ad72621c862c2d6c712cffd367999b3097313b7cdab85ee34. 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/GBJAJ2400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7371d31e21cb4a50598c8a5c507c2ebffa1d94c73bbcfa3ee033e60cd83950. 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/GBJAJ2400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f63aeb6b3c14070c82af5bc4fdfbadc1aba2224f34f9314334233d75af9d474. 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/NLZ542301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1036641526a4af9e4394e2cc35d4047043ac68027c99ff0f77ad6241ccdbd6e. 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/GBJAJ2300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa633e927608dee9fd83ad7896ed72bd2cc6e41a6a4640e1708f2e1834ca3c41c. 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/GBJAJ2300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9aaf45645d666663cece02d0519e17fe7c52b31f4a3077b8a13f4d85b0639. 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/USZXT2351198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2dd15473e8f5458a989b437512fb40378d1ad22ac03ae40b9deceba41d9640. 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/GBK6Y2251711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18cda1e704982a13b26dad5d293d9954a5b12bcdfe9b56442ddf311e219d804. 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/AUDCB1702241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8169b4acd3b9f7e416d13c40075074cbb7522b2b741436f27772c6d097b966f4. 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/GBCPZ2221265.
Darkness into Light (Deeper Purpose Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d75e1f7dd87b07d2d5e857c2172b71f0c262fca30064ae45e272b9d5fa6ad9. 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/GBJAJ2200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d2e836988c605615d611d59eaef81cb6a0c182da74f5c2a6317cf91aed3b51. 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/CA5KR2202390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa3fd677e8ea25772058f1c50be2db59f083816f3c9d5c4549f920ac4239ce6. 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/BE5KW2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9e215dbc50d06294efee0367781df357efae11f39b7f721c625544c5f42758. 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/DEH742162300.
Everybody’s Free (To Feel Good) [Deeper Purpose Remix]
Everybody’s Free (To Feel Good) - Deeper Purpose Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d08706e1ed7f1a319e7fde416605d1b5e8f262f8fe0f82f4d11da98fa08b000. 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/NLZ542100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e07924b0320b7304a2d1e64ba051a27705b0f4d62b27ab4838266aaf3af850. 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/FRS182049215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7804679b2863094bd9a71cdd609ef5cd25b8a62b7002819f4e9f9c25812cd85. 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/FRS182049216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e3dab4cfeb0f9a602857736f97bed848a4140a5351644943f2418aa96a665. 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/GBK6Y2057301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa606916dd2700bd0de82f32fc7d5257ba8fcf2c97981aece62f4fa16f24f692. 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/GBK6Y2057302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3fb7d207a6a1b58e4a1953209a723ee997f05b2a7308a921ba3beeeec86fd1. 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/GBK6Y1902701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe519325067a20a13dd8176f4a3362aae71bfa1b623ac7bd50a743fa41669ccef. 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/GBK6Y1902702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6761d576baef757285d89d7be4855a3d55f7633a02e680d44b63fc01d1b650a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBK6Y1955701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92074d9a62dd11be5b2227c81c70136762b8f78cc5f6fa851cc6f6b47335e9a4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:33:01Z), 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/GBKQU1876328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9871060e710feb6a10d276baf8b94ea93a736c924968199db05ca169228917. 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/GBKQU1856749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f48b441dcb6578cb80e9fb3e57c92c893157e8135ca8dc2d6820de806c4e20. 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/QM24S2306752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e20d80a3be81490e32ebc8e37d761bab7d326649b996e1770a0051698501d7e. 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/US38Y2507035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5429c1a74600b58ef042fcff16035f416b5aaf19f5dc4c897ecaa12bab19fc1c. 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/US38Y2429914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a7b01c1e35c6f17213f63c0ff133b0edc2dd74fd72cc37b8f674f3e60d8fad. 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/US38Y2503748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7559671e7ccfcce14ec27c3a8cfa7f9313c22fd89cf2294289c7bf71f7d9e7b. 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/GB3CE2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a256f7a9700a66089c64680f29d054c263140562099ca8cc99ed6d4cf1d5875. 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/QZPEW2528711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3976c06fec3cd077fbd4937d283e03138048f89b60538672cdf7c6c22b53ee7. 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/GBLV62410760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a287b5e2943a39c9559620666c0fce175d88890089bba3ca1f555bcb6e95b7. 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/GBKQU2477259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b59b5a1f75d545813a4051c91b1b9258eb52780c66a2c3f87a7abd1b9082b. 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/GBCPZ2322720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8169b4acd3b9f7e416d13c40075074cbb7522b2b741436f27772c6d097b966f4. 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/GBCPZ2221265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2f6598907f0554c316a42d784c449d94fde2d9bae3aba7ce80d39078226d1. 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/QM24S2202136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf851dc1210ba2fa4c59f0dabb52da8fbe70be9f5c2513274490fac356e7efe52. 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/QM24S2202135.
Everybody’s Free (To Feel Good) [Deeper Purpose Extended Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904e24d1a32e8cd8ccd7117940621bf8f583f27616e0713320064aea526f87b. 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/CA5KR2087730.