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 0x32d45cf1a308ac709a5db7640642519b35f1b479e354f5d655d3c75431afff0b. 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/9bd249cd-5321-449f-8d3a-8f1e782d2b11.json and https://artists.proofprofile.net/proofs/artist/9bd249cd-5321-449f-8d3a-8f1e782d2b11.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 0x5db9a929481c5620b1d569027cd1c082bd31793fe6222f3e4b137b940288e0bc. 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/DEH741313067.
Tranquility Train - Matt Correa Remix Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2af46eb1d1fd2eb25175c67036cf6e986938d3932ab8ba51a84ad2fac65888. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH741313062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a415ebff00d36b00ff8a18320f6c112038e152df0b9e61364c57883e01e7daf. 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/DGA072232583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30f58c348afb79546f5b8cae2fa431e3827c2949c576fba8859b79f611d90a5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DGA072232584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac221f4cad0222f3815da46c2bd91c6d8527fafb54ce4f4ba3411de102e57c2a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US9C22200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf1f4d3f265d6237c5ebcbb7833965f5195f17b79fef30a60f79f208aef23c. 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/USNRS2242313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc64a18716210d8170c6e4cb546bde81d6f6005454d7411c3deb1034a59dd5d5. 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/US9C22200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f477335e492e1fc3786a24081dfefbac81f726f4d00bbb32e8f7fa3becfd6af. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/GBKQU2240054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac708c12f35b056a0205a69f9168149e9c8ce6580da0752048b9d179469311. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLV62103126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab40231c56b03c8157366bb912a3dba1d44a363a7cc71d7f017a8653569818e. 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/GBLV62103128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86d034e2d0ef9bc5f9fc3f05f86f88869165d3b30e2fdae0e79811b06a6bc5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR96X2141781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd315b018873e1c94624f7a9a3451709d0ebcc899b71454c281e2117ed7b5dc. 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/FR59R2154090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03056821109386efbc8320c9a6fde06b1cace3ffcb3b9fc64eb2e63459884a3b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR59R2154091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ee60f68c6ab1df299e542f8d5d01cdb6dcbdd0c02d4878c7fc098b45e493f. 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/US9C22100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1775c126c77cb334aafd8ba1700bf6ffef3ff24639d31383d866b486e9a8dac3. 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/GBLV62009981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7830e705d804fb747e1780147bd51f06cfaa662dc33934c5518970adac031b0. 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/FR96X2046337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e478ca11d39a7d6c5a2c7b58a7492d316eeb2e5a96e158db2a1ec79a01a87c. 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/FR96X2046339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f184029ee01d3651d1ac9be72a65056f40f6b67ce9bc5e6c241bc9da4c123f1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU1996295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4684d4eca806954294c9fe93309f040a8826d36c830a5206bdcbb1d2b3e0a44. 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/US9C21900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ac79e577aea43961ef912ca3c187511db1d26cad1f7c8eac85f490242ab6b9. 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/QM32E1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144e353a3cca4332493f5120ff11076effe3d9c7fa46669b62a983d06f3ed62e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM32E1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b3d671c7789c07e9cf301991fe5c02c791cd5ecc0c04751ba814fed64aa6f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH741649377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb16a606d1b3f207002a859085e51232f852d2a855bab5b650cdad47b6d388e1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBKQU1638446.