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 0xd8b836e0bb31a57ecbb949c55311e588759e5ffd2b4cf2ec1c1982b7a769bf88. 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/2c057dd4-3d93-43e2-b36a-f463233a29d3.json and https://artists.proofprofile.net/proofs/artist/2c057dd4-3d93-43e2-b36a-f463233a29d3.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 0xcabd55efa33f75994495b469ccf6b8701f6c31c99478111167e54dc9c51fd19a. 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/ARNE52400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4fca49ecf9cda9ec87461a3058c8f2c4180e0f8e9ae9e0be163790e06567a8. 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/USDHM1723039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360159a82e35c739b9c65836803f7d1dae3f2d2691fc8090e3e97e86159997ab. 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/QZMZ92126668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b029af673cdb723398105e27ed027c13fe7a7de87a137db7dcb0c37c589c46. 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/GX53U2026502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3cfaf1491b01d1b748b26c499b96bc5e820acbe4c461a644a1dc6a152ecef5. 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/QZW9M2228116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0f5f21e48698579f6e0394b15d58e0ea97ec065c36b97c8701f557c342910e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ARUM71600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ba00a63119a1acddb4b4f21b402e660f230e0c7c4e2cb0f882a594e564432c. 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/ARNE52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a1bba74ff7658a16f350d922f871e8281119a23576ab0d52bf83d566598fc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARNE52100001.
Lalalalalala (feat. Los Caligaris & Sr. Flavio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cbabe07eda47929715bc87b246b9d4f7fb745b646f6d597c837d51d551bc77. 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/USDY41525382.
Una Noche en el Paraíso Escondido (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39b731bf8218d963c909cf8f5f67807f15af76d4ba7862edf2dea16d3bb6de. 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/ARN4W2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360159a82e35c739b9c65836803f7d1dae3f2d2691fc8090e3e97e86159997ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMZ92126668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1668078c4825ca7746346f6351a41eafa337acc547c77297001491849f38386e. 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/ES5151800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1668078c4825ca7746346f6351a41eafa337acc547c77297001491849f38386e. 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/ES5151800052.
Un Té De Tilo Por Favor (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b06d4834740a04e830d29918194b0936a78814d2469477192f821318b7007. 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/AR42D1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87f4e4c092815200b2091aa0d97a707efd09fa7b9617243ec85a450c9fccd02. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USCGJ2564243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9e4e2f59ee5efc4a4002d596361f60b64a35c04c5dda612af33de9136d8000. 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/MXH152400184.