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 0x150df7a76484837d70da722ee6d5bf61c17e8e0fc4d7e031714014f87adec31a. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b79ddf25-3314-4d3b-a361-190eaae8e266.json and https://artists.proofprofile.net/proofs/artist/b79ddf25-3314-4d3b-a361-190eaae8e266.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 0x21cba45f72d90cbcaee0a4075d05b6bc7eb0839a129b3612d3d1be2181644c0f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBKQU2400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f08e2fde3eb42cda4503035d9442b76b1f4368fdc00341ebb3616c56e17a6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBKQU2400803.
CUIDADO CON LOS NIÑOS - Technicism Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59351d42d24397d031047025c18eca5b4719887229a2369453463be870539a4. 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/GBKQU2400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931777d8d94991bef1f22b76295b987ec2ba756adf0843093bd545f71edc6054. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CA5KR2421502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee4a7ebc202bf2b8627bf25df5d39d31322448cfcf59748da5aa538386c8bc7. 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/DEY472476201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2a9110e92679b6535a25c2338675c27c0c5c35a174e7881913f46a237d8e7. 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/DEY472476202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a6b66fd3dd233b7cd901ecdffd3dfbe3183cd2dc8e42aa61907c562a95fed2. 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/GBKQU2434347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e89d6f70ad1cfd2b32d0d2c781eb1c3877cbd288df9af6537d83ac988badc0. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBLV62308791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f2ede1b1b409df334943de325dcfab39d7b49a2178c96d2c726eb75db952f1. 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/CA5KR2366232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d974de2973523a9e25cfa3b0c2bf9d0364fa26dda63ae8313f02e68defa24aa. 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/CA5KR2366233.
La Noche - Cali Burton, TOTS, Renuna House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8a411958b81113e9dbf13aa00ac9ba09084fc0e4460f8797cc5f1fb3320c5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CA5KR2366234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505cea7012246dac8c95194a2a73cb41ff73502ab627ad7dc1f609580875f3ae. 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/CA5KR2366235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b8deb74b1595c4e6d2e9ae24fc5e96b68a8966b44519c55bb562d2b7b2616. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CA5KR2434096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf881791a8b3685c4934d08f1d1c87d143b6815a1ca99d67ef3f383adbe193b1. 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/CA5KR2434097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76766f0d36dd2161254cfcbb21269710436a02395758f00fd4f894c0f82ecd. 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/CA5KR2387718.
"Suburbia" Various Artists Compilation Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e8d71590d4f3fca589477600e80ca899dbb7da995884d655e9287a8ed6ba6d. 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/US83Z2426494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34179b61c1bf11c8afab5ea56f124b48c0e4b1a0d5afb8cfe037a23264d11c57. 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/US83Z2502148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646260c2008f8e7f094e44a180ac52199ae9a809fb359df4b1c05ecd4286a29d. 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/US83Z2502150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2934480493949654f9c3fabcb2cbdb08892391373d5ae978cc8f84e46d495d4e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2498588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928833ca1cb93a99df5e888ee8c71b86e0cffeb724ffb75c0a478e5230e0640. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBKQU2498589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aabedef0f2e0a70fb67415436c7d3a46916661022cc4273fb19774a980e985. 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/MXA3V2412140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab397653e08354c274c387f038cee7b4efc506f74a0612d435e077ae1f617c0a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBLV62409358.