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 0xfb07b51b171e9edac00859513176102fe55d9220b083d857bda929f79f1df809. 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/2b1b7016-db2e-4367-9f13-0caa2e2af083.json and https://artists.proofprofile.net/proofs/artist/2b1b7016-db2e-4367-9f13-0caa2e2af083.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 0x3f3dec116942e775b0bac766cab75ff471e649202c7ed70e784ba89d51c0169a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEBZ71600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e14bccf0ad64c5bcfe63083e1e9747339093cc7156f1f2153ad913091347c4. 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/DEBZ71600214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b0c3ad5ba62b73f38f3e5166e4bdac2b5bd2fb9ae94e7910170bcfd8ee6993. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEBZ71600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611fa9a30894fdb12c9521660e0129c1540d766c59d790c147769d4f7f98d2e. 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/DEBZ71600216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23663c8643f14cfafc07ba570db30e0b0e64ceecb9830bd88f137026b02f0824. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEBZ71600217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf9b5c776945ee5a42a48b4b28373e1d37b387b1bee378f57110869aeade88. 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/DEBZ71600218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859159706d6c72e854c1945f80c77fe6e573b2e26ff6d0d902f7bc0f74b4814a. 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/DEBZ71600219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0e894dd7e80102e4557210202fb8088b14405ae8ae9671e0f426bf3c52876b. 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/DEBZ71600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9385a28297b8871cfe1adc44edf3ec222989180f9ee81b50bb377bee1aba4887. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEBZ71600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963b195451949658c8fbedbfc5194d2c9fba71f465509507348ae99fcb19289. 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/DEBZ71600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af64048da4e95a72178a58b0534550b234d5f69fee45fcc9a08567102adee9a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEBZ71600223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0005a542e53b63d6a1dd7d7fdfeaf43f27be5e9c2403f7791bcc5bb306f5b62. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEBZ71600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54584e6a8fce415ca469870d5a6c9028d3bb0de7ea728e507066085e83e34be8. 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/DEBZ71600225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f9d523e6b2b03c530cd2cf9cd45a26a4694a8b79fdf1fa016ecaa50186dbdf. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEBZ71600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592fca2b3333324c9db24cb2f8245adef25f8daad4db472b82c94933f834a833. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEBZ71600254.
Vida de Vidro (Crystal Ball) - Remix von J. Blitz Gouthier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38db3b00f225023ae18a2b3fd306b521ef7a767697f2248ceeb7ab24b0d5b199. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEBZ71600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d632c74e07965c07d81d624b6892204b539940fc7f0f5f7b26dd2b7a1977051. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEBZ71600256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc435742dfcc30f64c4a1b7a52170b3051a4027081bb8a254c3774644198239f4. 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/DEBZ71600259.
Bratwurstzange - Remix von Lord Of The Lost
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa055cc915550780a5c0cfefee6ca9df89fe28ed3625181279dede260f2631069. 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/DEBZ71600260.
Eisengott - Remix von Massive Ego (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f887d9bfc180994a6a432c0a5731b7b561a8a358892c4e0f7dcda382780246. 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/DEBZ71600262.