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 0xf8cd544285bee83c602c26c21a09a6a5fae18e223bdc7b6407561c24c2b40096. 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/e23aabae-3e71-4ba1-9bdd-e9c9fdfb0eb3.json and https://artists.proofprofile.net/proofs/artist/e23aabae-3e71-4ba1-9bdd-e9c9fdfb0eb3.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 0x640d2f9ba5fdf3ebe02faaadd0ac84579762e15e13be4bc1a44129edeeecf07e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLG661800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4acf35c1b50a49a08eb972078d81a08380eb1568e51bce9edf59e268abdcd01. 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/NLG661800526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff86d1c3bcdcf641918e3e85bdba0927694cf62c19fb56e1a9c28d16f91c4d. 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/NLG661800527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf58a59f31452af38071ae41dbff3f6fd339aed3acdb44bbcd34780f21d9a52. 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/NLG661800435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a898ef2309b29c5059812dd8997dc82541d494e352fe44179aa5f195059555. 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/NLG661800528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0803a1a7a9cec1b109075afa7473703f66e58500ed2b8eaf340cf2752d0b77f6. 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/NLG661800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe885bae7a02c681cbdb4676fdd72208e46ff340cdd3a16c5e522cdd11efc15f4. 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/NLG661800530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e2488768a99f6bb91cc0694130d3f88fdfb29fab9e30da0bf79c661e61aa50. 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/NLG661800531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba347f33d7a5ac7c652f20aeb7d4361e4b956731279b081f1e9dfb2646690b72. 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/NLG661800464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea156c9afdf77c9dcbb5477a7bbf35b2c9ece6a988e7c0dfa27b1dd8b93c6e9d. 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/TCAIH2459587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8609ef53dd18b7a051cb517558228d229867bf22697b930c1431dad0d37fc3c. 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/TCAII2459646.
Regular (feat. Josylvio, Mario Cash, Vic9 & Eves Laurent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa612b877a807962f6e2cc9f7a1e63becce9473e14bf3afc12f78fbef1eb79d8f. 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/NLX1U1800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339de24787ac49d2ac6638c1ef429b3e89bb40be4bc4ac5720834870feeddb7b. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ZZOPM2002026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5390b205606535e20fad57d54606e774500d46050a355fde5595f618105ef041. 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/NLG662000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4e37f9f060a75982b11b2e5df5c6fa5652d3f6f5964942aa19e04f26486431. 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/NLG662000132.
Kind Van De Achterbuurt - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c27fc75a60e64cf95a2716c909fb21b70b33f239dd8a8679f7524db6212e84e. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/NLG661900653.
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
Go Getta - Mixed by Deejay Abstract / Hosted by 4Shobangers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228596a391f9c8f629e025950b3267ae008cf53a1ca726b2fe0b022ee034e1fc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NLG661900656.