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 0xaa5ba13e2c1a3f2a7a801a7393fbeb27f10a9c80039bcb217478e43823681400. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a0fe873-f9e4-4040-bc90-f5ebf60fd68a.json and https://artists.proofprofile.net/proofs/artist/7a0fe873-f9e4-4040-bc90-f5ebf60fd68a.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 0xc71dbe4f888b257ad2dd699f2456a13246216cf6d3dd8a6b8984847846ea4ca7. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/SE5Q52000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f1bc71b81f912e6a27912d21e37af1a0ed4f391bfcdd2de9cbfbca19b42713. 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/SE5Q52002845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf425956a976d30c6843500dd0f7ac0fe6a9968abde75a320d9877d4eb2f4bb06. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5Q52003238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dc24d20b4f08a2b95770ef865a7692ebd81c02a94491f9bd6427a5af7cb7a9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:38Z), 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/SE5Q52102631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fde85c5a5e93b8b64b472ddab07648640ef90c3310a73dfb49f13ca7a138b8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52102964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f96817e4701df6a32c1ee4e7b1c2a55244d83db7066e9bff30121fd96f6077. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q52104302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6435144c8314677a7e7fcf847785717e24fd94fc8f69d94233d3a6cae3d00dbe. 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/SE5Q52200533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d95ca1f6e437cdcdf13bcc33792df958d41898ec82b0cd74c9093a4eabbaa30. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:10Z), 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/SE5Q52201866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e209b20d7577173d45c87287f6167b85701a6694b3d8c09714799e50e01450. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5Q52204167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d9335120c60f8ccdcf328384edd6cf39a5d4d4a074ce7025213716eab38905. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:35:36Z), 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/SE5Q52403123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8386036df2465a4ee41826871195b576d53f7db2e31c71b9021e563b01af07. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:13Z), 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/SE5Q52403125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176036c6e8ec910d7fa42552b1ae0d5c1b70ebc04c058aaa45b3e41134104e24. 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/SE5Q51900109.
Tell Me Now (Felix Johansson Carne Remix)
Epidemic Presents: Crates (Urien Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8bffbaf328ec436ff56474bcbf61b1a34eca2773faf7af9fe11f5b0daca981. 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/SE5Q52001597.
Are We Still in Love - Instrumental Version
Epidemic Presents: Crates (Vega Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226d3f81113335d3ff9b6a0d7ded6a285ceef64caeeba8973f5826bf0b7cd2f3. 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/SE5Q51900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f5b811153216b8c1589a274938403498aafe44616f3c2df394738dd9f1df8. 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/CH6542410037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270dcce81a2dfa7396b144fb7a2685dd776337d9071cddbddf58b7e9159fdbd. 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/CH6542410028.
Looking Back (SLCT Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5992633cbe023bb04de89780b4012b0078432ee45a742af7711a625143efe11b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE5Q51900110.
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