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 0xfcf7d3936b0e3ff8f77ad3d02e92676e21d17bd28a1b7d0953af46ae6a530147. 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/ed7cd9c1-e6c5-4806-b178-9fffc1449ae4.json and https://artists.proofprofile.net/proofs/artist/ed7cd9c1-e6c5-4806-b178-9fffc1449ae4.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 0x2b58b196712ed10a24b6b31b4904ccd9e07d1ad5853c6aab1f5beab16a9891d6. 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/USLD91762150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f8118b3a317f46037c45c27cab0728217b5a79853edcf1c41ead32af09807. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91765284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2190f9873cfb3bd729ae60de4f14ee9149e6a2a83b3e1286bd7e00647ef5803a. 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/USLD91765282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b58b196712ed10a24b6b31b4904ccd9e07d1ad5853c6aab1f5beab16a9891d6. 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/USLD91762150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2190f9873cfb3bd729ae60de4f14ee9149e6a2a83b3e1286bd7e00647ef5803a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLD91765282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f8118b3a317f46037c45c27cab0728217b5a79853edcf1c41ead32af09807. 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/USLD91765284.
Got Muscle (feat. Peewee Longway & WaveIQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e2f0c65d242799585c63b99f41a34fbd5b61ea344b870cedf6fc25d0614a9e. 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/USRC11803740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba92d75c938482d0b957c9116549929f537c3bf944e2c48ecd1f1a15a27b99fa. 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/USRC11901686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f61bca08d6a61f07829cb4964be92d13b902f6cc3e57f00ba685acd36f597. 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/QZHN82038039.
Chapel (feat. WaveIQ) (Skin On Skin Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592ed485680bff9201ca1b4a1f7b675b6c93f9dc7bba61d24514796485e4e0d3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USUG12203155.
Chapel (feat. WaveIQ) [Boys Noize Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83634e7da25d7414c6417f9d0c252c5769bcfdef804ca7c07d786fc8e891963a. 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/USUG12002680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f82cdb21a1d2d4e15e7e8ea98b979c36b187e59fab212077b594d9fe82635da. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USUG12001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdc6cd1c2bbc0690f78bc47eab6949b2e4ead3b68c7d115be327aaf7f480ed. 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/QZLBC2316263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdc6cd1c2bbc0690f78bc47eab6949b2e4ead3b68c7d115be327aaf7f480ed. 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/QZLBC2316263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7679bc9552a1cf34b8b7348794c35dd0335faca3a2fc6a0cdda3a63aba4faf5e. 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/USAR12300177.