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 0x6a80b47e3236b27976db2f1a7022c6e1f9def157926e85ba04389ea59955fb89. 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/afa08958-454c-411b-8b7e-69b9c808500d.json and https://artists.proofprofile.net/proofs/artist/afa08958-454c-411b-8b7e-69b9c808500d.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 0x9c31d6fa5bc9d2fbbfb894ac6cb45a62107bc4d2dffb0daed277609261624bfb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJY2145422.
O Carpinteiro / Escuta Meu Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b96374d29eb024a86cb1ca6317972ea64533cfe1e7cba9d246d92d3fd5eb5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNJY2145423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75daf5274f6cf8db3e8e4531c11c86b5c9dba96c9d823987b854243d2f0d6222. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2145424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec418f26479d84e0e91925315af964fca4c137629ce5cb9da9b6e468f45dab4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHZ42227779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567ec3623e716365c009f490c8a66cc3fe265ec7a639fac0d9a6a3b31db29dba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMZ92268161.
Setenta Mil Vozes: Leila / Cubana / Cheli (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aa192544d8230ac693119520fd4f0d7f2e877f9f01deecc1ca470902f25d86. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:32Z), 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/QZW9L2309689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd171d8394b03f2ab1624f1183ea42caf71a996b3eff06345bfe7dfcd81dc196. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJW2564185.
Pout Pourri - Cúmbia Del Colômbia / El Pescador
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ecf3ccad6815800274478319d62bf4963b2742bb6a909911ce810b235d2cee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJW2564186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e7ca767f79d03dff30d068a206318a4756e5cbd6d5579ba8975540ae80253. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJW2564187.
Pout Pourri - Chorar por Amor / Lá Vai Ele / Dia do Corno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17583e6c496162c166e8d2ece8c53e3170ba36a07adcf66ba2ae8eb77ff20db6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJW2564188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73359ce2d115dac3bfb20d8ad7f72b6a778e1176b2a30e18a8a6c516575bc51e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2564189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7751851f0ab2828080f40d44c85bb4581153c42c78ee5bfe97ff9dc2b93d1b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJW2564190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6f8ab2d79e1f736de3ef3fd6d1e62df8295a5ba8b12f70bb10bfb5e6c21c88. 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/QZNJW2564191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12dc8308d6bf2fc4f474e43a6a7a9110b9e941a0285445663f2eae72ec700d. 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/QZNJW2564192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1abe505b930e3950c9a52d27f76c1ba7f32a43e36cde4a6b9f9153eb65fba4. 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/QZNJW2564193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3ba4b15c20894777f6326c5f2a9699d70ce1a3235c5ec395863c1bb453ed4d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNJW2564195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8735c8237df538538b7c05db225d7b8d9771248e2b031a908390f42f2f0a2c5. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNJW2564196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6680dd8b58b72d483ebd8ee6f8e6a22ab3d9dbb915d8027ae0a8833436bed77a. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:07:13Z), 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/QZNJW2564197.