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 0x9afbd0d89b08dba37da233d2570f104c72357b93e68189d656ab6f53b42b10d5. 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/5f8ee0c2-78c9-4be8-b10d-97f126c09a3f.json and https://artists.proofprofile.net/proofs/artist/5f8ee0c2-78c9-4be8-b10d-97f126c09a3f.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 0x38cf9b237d414e0a7c0b1760dd0a1d513a8dfa3964845bb4a1cb0db74b4e4ed2. 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/QZ5AB1811547.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545746a7ce4719006ea2b5e6aa907a05bc7aad9f44bfcba692fe600fdd79ad6b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/FR59R1978457.
Ahí Voy a Estar (De Canciones y Otras Verdades) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6477a504ff7936898c119b60b911176562158d1235cf89e40d1f731f103e2835. 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/FR59R1924112.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a2e3e4b907627038e7469db9c46d7dd3858b1a655435646f005e9ca7747cd2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM4TX2287715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b08e9a8d8c5c49b05930492562ab18ecb6715bafea203a9ff213ed902649f7. 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/QM4TW2351110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5abaa9c81683be95af770e9462295880deb67a703e4efeb927a8927e7a2b80a. 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/QM6MZ2330768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d33abc0fd51abb8eaf82eddb97c4e98d1461f38932da422221a13f8cb03d7f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM6MZ2330769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8af6bfe0a685bfbabd3ba236971b5afbd486f6bdfa09636b9eb471b60f10a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM6MZ2330770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0e4bb1068500b409f2035d5db00524bf53e9606d3983802af4047f4659626. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM6MZ2330772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abca05d31787cac0ff91ac02508517090cdf95117632dd795fafdbfebaddc20. 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/USA2P2457054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61024aaf6664de4595460319d4ab415a7665198fea9153d5c8bb48ef5e65fa28. 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/BK4DA2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61024aaf6664de4595460319d4ab415a7665198fea9153d5c8bb48ef5e65fa28. 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/BK4DA2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2348ed7ec1d5a07c716724aa632407283b17d90091907c2e5c123cdd38265854. 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/ES5152300892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ead030f2a433aea0ec2430cb7e55657dd71f9cb5b8d1cd607c4755e64fe368. 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/FRS182139265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f855f1a6ca28a5fbed975fff68970752c8efdd7e388dfdc6f3aa88b382c1996. 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/QZW9K2371641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef198721e7b3076f827b7d56a321acdee557252cc3c06ed3681068895ab278d3. 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/TCAFU2168464.