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 0x0e4d8a9670e226a73588cd01b887443d953e685684061bc413cf70c91a27168e. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff93fab1-ec7d-4def-9e20-e426cec61ba6.json and https://artists.proofprofile.net/proofs/artist/ff93fab1-ec7d-4def-9e20-e426cec61ba6.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 0x5df8fd0bf46335c693bd6b614cead1ccf65d09c8851e23d4a5764b202fac1d92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPJ32227155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8a2fe42292a0039cb58620d0fac5cbedff40bfbea0088e0d8cc0a7e9c87efd. 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/QZPJ32219643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8fd0bf46335c693bd6b614cead1ccf65d09c8851e23d4a5764b202fac1d92. 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/QZPJ32227155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb8a12b02ecf5be4af04d7038f7f5c283a5498407dbecc10621d2fb58948cb7. 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/QZPJ32219638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42659fbdc647563c71bc421ec2836bbcd3cdc503b74c4bd4c5e8ff4d8c4bb9b. 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/QZPJ32219639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fec044bfe2c5a0eac2e19808016cac1e45dd9949f5164f98ceb5a002cabd47. 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/QZPJ32219642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b01c71183c3b3ed0dab227918840c4b77720327eea25ee66dab716f433c05e. 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/QZPJ32234211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e60764990a408aa3f381a379ebb9beee81d5bae3d5674a7f7e5ae3bc2384f9d. 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/QZPJ32233237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd9d9906639a67a63a3525456976256b316f864b3e9687be5613348c683b12. 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/QZPJ32234215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ced159b2ba829439bc37df33c92e36b3ef43c62abfe3a5f553460fa40bbf7. 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/QZPJ32231464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ced159b2ba829439bc37df33c92e36b3ef43c62abfe3a5f553460fa40bbf7. 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/QZPJ32231464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff4e41c75a1677bd5137dd7c6fdb0175657677be2b44bca471f9c95be87dad. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZPJ32334401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42957af1e73ca9ab9e136efff8085ed6502325120846b4d39e8afb405046239b. 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/QZPJ32268581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8fd0bf46335c693bd6b614cead1ccf65d09c8851e23d4a5764b202fac1d92. 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/QZPJ32227155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7be4cdda9041c6906d376b169a7e8c8d2c580e6766c0e4a2f8d1df0b61d23f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZPJ32296686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e82b4192e6b8a47f49aa3280bd593107c2184f2a5c1d271031900354844e6. 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/QZPJ32219640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd9d9906639a67a63a3525456976256b316f864b3e9687be5613348c683b12. 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/QZPJ32234215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fec044bfe2c5a0eac2e19808016cac1e45dd9949f5164f98ceb5a002cabd47. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZPJ32219642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e645fade715d0912e3c397cf0122f8795c809f1a6c1244cd163aefafae315ed. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZPJ32308417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b471f63e0bab6e6bb1ed05bf511711a2cb42e912345469eded2623bf497449f. 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/QZPJ32219636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525c70c8df6c81ed1ca2febf8ce291c606b25537e662b3765f21abf1bee285b5. 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/QZPJ32219637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb1ea6a75857704884c875cc2f0ef46e69bdd92550ed2f4d7e61c1ad126410. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZPJ32309564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df92079e1431628242a008685a942ad24cbf465a6bf7f6ad493f67408f54dc. 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/QZPJ32219641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b01c71183c3b3ed0dab227918840c4b77720327eea25ee66dab716f433c05e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZPJ32234211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8487396bb0da42dc80b7f8842c3d53d127fb89826cf221e9b1b95337c855cb. 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/QZPJ32232979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b4369d07d1c53bb4c3066fa2ef9d72b1d9b1bb1710d6bbb1c1f4295b30785c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2406936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68086512fa10b7e887660f86b3fc1f029c801ba533cfe1ea28a2d31327e85c2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZPJ32361358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68086512fa10b7e887660f86b3fc1f029c801ba533cfe1ea28a2d31327e85c2. 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/QZPJ32361358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c933d60b0188812a6e57f83bc2763fd297f368d1d1030751c47bca7e1b962f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZPJ32325032.
A testament to the beauty that blossoms like a flower
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc93b26d57c98de3ebe3fa995ea0c8fdeefabd8b7f26f24fdafa67d9897da73c. 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/QZPJ32347885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf06f71f9d21e2797e055953ad8754507caf904a83973318826bca5c0558bf56. 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/QZPJ32353934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e2afe8f81afab61ef6d9fdb0e01be71e40c43ed038bd99aca878a4118e946. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZPJ32346027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf76753cb1816fccde658ec336fcc4d5808a73e559d027fdb8647900acfab03. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZPJ32344874.