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 0x0b870a9c41c5a3fce7f3c7dcdfe635548b5b8ac06d6de8b37c98f954fb4b7dbd. 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/987ae56e-aea2-4143-8378-30068b01b44f.json and https://artists.proofprofile.net/proofs/artist/987ae56e-aea2-4143-8378-30068b01b44f.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 0xeb9d083b0b33beda8f7a162031f384660b48e2371e40264bf5686a8024cc78fe. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/GBMA22375621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b385d5867b3fa69d1e0de8d17fc4cf533a7e74c9081396b21e6e5436f166d90. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GBMA22375623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99e2838f382e31bf621b6febb68e787cae71800a5a8461c4b6b4a5c57affb08. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBMA22375627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460a937559b0770dad1a20bdb917cb8d57008ee4e170ff9db8f14626cf04747e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBMA22375628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a0867d7647cf2f11ef431611c9f4a2a4d77eb07233346187704301388ef6e. 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/GBMA22375629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864612d39446ea63e6f666a20b15879721a16b680f3c1aee638e0b2ea8cd02c. 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/GX3Q92471019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ac51a63d131426ca61e8b649d7479af531ffff5b5108cd6e08386d6e8ec4e. 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/USL4R2033771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a51f9aaebd26d054ab18e5c2befffbbb9385fddc412b5d481fe706e7d82ee17. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GX3Q92469449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf26dcadc3d75dda55a58b8ee70f104ec29d8d9992d642f65e004d8489aeea. 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/GX3Q92471003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f33dd3e418e9ff322a54e2b81c2ae6b86523ea6699fa4b883225a7db322b4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GX3Q92471020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50024696693c31bcc41973bd5cd34821b379ac85c0cbe5b497220e63a6d6465. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX3Q92471022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0b46d48d17a715815fe1a983dd565b55f69b413547d57457d48637b56c1e8b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBMA22375651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88611aac35663206e73b47fd653ffe4861e63d513b71da652b3db8f7b8fdfb9d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USL4R2034368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ef1dc395ca459d3fc43bc28712f08ac92448a5d94344b4e7beef4d9692fe44. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USL4R2034375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb7df9fb391b93aa71df8b1e38ffb958dcaa071103ea395abc51ff35206555. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GX3Q92471002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d83a77ac144e45e8ee94b2f6d8058a8c23edd61ac612c29dce88463230eb989. 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/US7VG2495444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca2f863dca1a4bd71b64560be90fe868ad1207886b4dc617fc8f562bcee88c. 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/GX3Q92471004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d28c6e5b3f98f85d9fb8862fdd58a4e67ce03d12d3508df64244e43f92cea. 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/USL4R2037119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc1724472779c7e5f59c751beca746e46abdf710932092c2e9e1f8eb9cb10f2. 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/GX3Q92469447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4758ac9a07c189b66f78d466543f16ffee41cf19cd2d4217c788e892e5126e70. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USL4R2038996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c3a1881a2eeb02807011abcebd423f9a97d22b480f39d82a5e4504ae45d838. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USL4R2038990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87951ca331bfdea8b1811f31ba462d10cb0f36f4092fcc56e4945794669e577. 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/USL4R2039005.
Ramon Castillo y Lorgio Rodriguez Contrapuntean - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98251daee66aafbc04bdd4d40c06e5412735bc223039e4f54b8903eea579bd. 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/USHM82148859.