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 0x725744b421d120a1d2eacc5766423b04a49e84ad37b1469d38c5938547942fb0. 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/7a714aeb-1b5b-424f-8050-0fd51cc49c3b.json and https://artists.proofprofile.net/proofs/artist/7a714aeb-1b5b-424f-8050-0fd51cc49c3b.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 0x3217a196beccda4be861d07f61295deb56d44ee98504c177aa0590a26cac3672. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMQME1200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80058662a017598f374a12de6816ac08b769fa2c516df9c2ca838f19c00df19a. 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/QMQME1200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a3e6b5202f75b1e7586e853625ce016b6b609b1a62ee6394dce2d50c87da7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMQME1200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dd4f0a1be9b8d11ab95e3174fe0a07bd4cf7f6c01d6bf5ad63f8f9aa25fd92. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMQME1200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0194856e9ba66cf38a07fcbf0e96cf9d64a776a0385ee08c5a0dea94986ea1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMQME1200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3799b6cdfe4071341525978800400672fd9f2f2c0e2639b1d8fb70126f058163. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMQME1200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04d1e3e9b75ad3288e88ba8e335551b7a9daaa12eddbb6dac20c345ffe7053. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMQME1200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9a3711fd786c718ddee7aeb6155127c55e11c598f8812e3547dac13ddc58c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMQME1200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48819c27bcab405b293d38f7cea710e99b55c4bf4b141ace72fdb6129000d3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QMQME1200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b88eb7d4ec61233007fc6fae81ccbefd38c3be1a6629ecceda11eed5be863. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USGCD0700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841bbd9b169e1da407641ef7294aa673072a242d2150db58737eda7e6a44b3fd. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/USGCD0700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf318d9fd48c6cc18b30ca316d5c0fa3f29fc9a5c10284f8f10f8b7530428060. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USB4U0851725.
Agua De Beber - Return To Ipanema Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b81b9a4b0e8357de9fa10ef03b506ac5f1746f52c5b8bc02d6e1265f6526d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USB4U0851728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7646751bb1681d5bdcc8922c1973e375d38e96c87bb5cbc4a0713371c87246c5. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USB4U0851730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e060af3bec32d1cd4ce3ed510c81f61623cf7aff797cda9c9c2a0682c28239. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USB4U0851733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c188cd7a877a3c5c25c804dbd1395050c4bb1cd77d6c01e620c8f82beb2f8c. 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/USB4U0851734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa70f1dcbff5cc6cb1546499958df941771891a934590263a3e33d99b211462a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USB4U0851727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaee7d3ca329a869b52dd376b8a1df3e5d1a6c8c5ffd879cee5b648e3397babc. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USB4U0851732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb119fd230c7189e792ae12bd7cb8d21b8609056fd4e7717e0a470becb8a10039. 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/USB4U0851729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1e6e0e50b2f6d4226062520f738816839a5821f834b2afd9a0be1218ea28e5. 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/USB4U0900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7646751bb1681d5bdcc8922c1973e375d38e96c87bb5cbc4a0713371c87246c5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USB4U0851730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaef14c28ec1f2a1b8b569f98f65c0ce12759e5ca5bf54478bca0b20f2c91b8. 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/USB4U0851735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0120f228d1205cabe2bc99304069280ac96451a6c3c969108810c769a74ffcd. 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/USB4U0851736.