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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23450975f52c44ece5876f5d05ad63bf6837ecb4619cede2cd917ec14bedada. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0383923-5fa3-4073-b04d-64a5cfe5b0ce.json and https://artists.proofprofile.net/proofs/artist/f0383923-5fa3-4073-b04d-64a5cfe5b0ce.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf564161d29e09eb16d080f7b235858723371c47e693546db3791d916999b915d. 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/QZNJZ2386153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5594ab1361f0cb2b764d4931f7768d7e1673e5c0ed740eed3caa4c3326f9d92. 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/BXMGD2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e157aacc2e060ca7af5b71171863c9fae881fe4a29b63828a48a17120c2ec. 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/BK31H2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d6db5e89ecb8b7ce414d23ab32e418e811d9b48f6182f03d338d7ee128fe3b. 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/QZTVM2489396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b14f4007e68dddb7b50bd806371e636cbc881697e22000be50a63ac4a53d87. 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/BKN2V2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f4626d43a9d8882a9fdd81c97b6f8ae0547e4628b170b5487f8f40acccc0ab. 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/BXMDU2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbede9a206b5b1ce9b24307f5709613e55a824921ce4ec3c4a1feac52f3a21557. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZW9L2339330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8628f1af1f5b8fc8986a1f3d04be2c7bb59ce8c7a8cd247f764cb9e7df4b29b8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNJY2319114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62c1124f1d621f0d7080366f89d033646a53e347d8875a576f4190865b1599. 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/BXMGD2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c019562ccb8654d29008bd29f6682f632485f61aaf95e2313596b2d4feeca8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXMGD2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b95eca87c4c235a0e2653165a5c859d9bf026aedfe66e65f62e5b73b532424e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:45Z), 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/BXMGD2300001.
Morro de Saudade / Amor I Love You - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f074e658f1d25dadb842cb82909c7e9e0275e3321dd7516eb0bcc5d5d426fb. 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/BXMGD2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66ed63d6ef428e787d7d261c735b6cf141653f0b223f2dae045ce2bc4bdf47. 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/BXMGD2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e04858695e74fdb9808d650bd9e4250b76450b2ed15fa52ba44e7a28fcdd4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXMGD2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bb2424a7648133383d63bc8151e764a306c359e1d1552d63bf31aa89d82bf4. 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/BXMGD2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9753cfa840c3baa4d5923828c39c04fe05f4412981c2754aaacecbf6b7005e4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BXMGD2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693d752b733e0c6d4f87ecedfd45d50233f53a4a5aac4169c1bd569e4473cd8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXMGD2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8792c5ec7533e7be3a3d0bf48224ccace2be8336d1d662184f911f3c1c0d905. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXMGD2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883f6e462f90df6ec6d5385e5fa04828925dc6463e687910ed72477bc9e67b2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXMGD2200009.
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 0xd686f32cebb134e46b16dc91942afe2bd3ef2b6dfcb3baa415625fc713174bd3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:14Z), 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/BXMGD2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c1e298977bf8a4d9acae1c3ca44e1b85c7175e394cba1585cf335e880cc109. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:49:06Z), 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/BXMGD2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfe274066c5c8a6bf360a1c8175e1cdd46d6ab426ca473998fa6cb4db8bc9c5. 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/BXMGD2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a65fb4db176be70d2bf07220ca575e7345103ad2f038cfb5a8f1139d4c30c49. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BXMGD2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9248be065c3dfa61751ddd9a9cb560d866ad5734b97e753e7cc131e861bba9. 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/BRUM70600801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8d99fbd2fc473ebef48c7af3461db86931af9eba140b84469f8635cfca1c49. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRUM72400728.