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 0xc72776d54f8e358eb166fc55d02f6c86ece9dac49de800237cb36be3e2de0b2f. 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/f680938a-2e84-43eb-a3ab-a63ad323ae6d.json and https://artists.proofprofile.net/proofs/artist/f680938a-2e84-43eb-a3ab-a63ad323ae6d.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 0x4bc98da34e991282ea3c4ebc1a991b1f9c3688cdb78c670f4874f738a827de4a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLM5S2101165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19d582efa28992c3241bd6f8cd1c9470a316f327c9da736ecf8180ccd430e1. 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/NLM5S2101337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb9a30fcd641dc5bef8392ea4e3dfae28b436b5b012ab58a76d07943065dfb. 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/NLM5S2101340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2b5673fdb7d1c929a475ac41b264d103bf19e01017c4cdfa8ef821795ce5c5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLM5S2101342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2b5673fdb7d1c929a475ac41b264d103bf19e01017c4cdfa8ef821795ce5c5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLM5S2101342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f46a6e464adbd6c2a6ecad77acfddb3fc490cd400efc71413bfe663a691a9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NLM5S2201624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe718ea00cf949a8dafa95c51acd3d7bb753a8a10c26809d62ae4262d8595e80a. 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/NLM5S2201711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcd396f92a215872bf7bb5e647926c0af4ad2bd43d780c3aeb1049001a786f2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/NLM5S2201725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe38f168ab0b45bd845c09bb17e380abb142275a2e3abb11c83ceed7a80bbebd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLM5S2201727.
Into The Light - Festival Mix - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069066328c361f7e0c38f09ab9e7451870462a289c42e59a912d8c0b7cd35917. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:47:36Z), 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/NLM5S2201729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb416d74626bd39ef0c85434cffca1bcdce786afafb9f551c897482fa0c43c1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQX92301435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad68f08d48c05b8c214bb5e0f19a09c26f0740f1d4e3973f4b9bf4bee481490. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQX92302375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad078aad3ca48cc3dfde8abccd2e98291f2a0ab4a943b8a4633384b05115f5c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USQX92303293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2dc9c7ba18e2d91e167edc468215cd98bf4acc92dabdddbeb35ca52f3bbb82. 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/USQX92401237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29f05bcce34f024fde155280da9abce8621c301c0757a59ca1c3f6864c5151e. 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/NLRD52350396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5a71008acd315af7d325e595a402e2496a24f5714e982fc6098e27dce6235. 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/USRC12300822.
Martin Garrix presents STMPD RCRDS Vol. 004
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa50f00b590c8bdd79711b59e7ddd2302f333e5bc88a0d8bd98f8a7f7f32abab. 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/NLM5S2101161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f7651ddd6309406c34b3aa41fb8057393ba88ccacba6f74d69a20d7680b91. 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/USRC12402287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bafb6156610ec7b9bc4c41eeab009118fd21018790aed378e06938d4b8fba0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLM5S2201865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa9ada535cb8089f55d8fc7900daa2b0cddce2f48d93b70690bd061f37b1a5. 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/QZZVQ2400556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0776e9ce17deda6d143b658cb1a5d10c7b300ee5dc488be432f8c13f08f46b3b. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/NLM5S2201867.
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