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 0xe6548f6a5091012666dafc6f8b26033c2e430c4e8e62555e102f0d17cf9feeef. 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/60c71680-9584-4f90-852f-f8333deeb3dc.json and https://artists.proofprofile.net/proofs/artist/60c71680-9584-4f90-852f-f8333deeb3dc.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 0x4ef90359d8a870cf8d4af9b209f0d11d5381de1a1a1782e286b7fa3e00f4729a. 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/GB8KE2161127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f547275d397e79ba95953f4159f54cba89d2831119c3992cb186ab0559090fc. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QMDA62175271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02217e4ccacb73512750b8f547443de42773c2fa64625ea86a73f76a0ece3b51. 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/GX8LE2493092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0363870b9e99cdb430275b6a7a26a0886350cf84cb4659b8457d14cb716fa. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM6N22437916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b38c983b1395ae65837ef8588af6567c76cfa3706199ad00ab7f6afc41f38. 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/DGA052406414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ec5a7c054d8f87a9c7e48f1b413f778ff257feddeb46ac2eb1367f6da9c6e9. 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/NLT2H2400817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4537be294354a7eafcee30c78d58fe50c7f99e6b52dd6fe0bd5ca2d40410507a. 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/QZWDE2427242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d34b1090371e5c98f8854a3c9fab5c4f1a2c53d1f086f26a06f34e9ccf516. 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/QZWV32433739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7762968a914051d7462910c6e621e575e042e6fc7c7ff7e844b0475a389193d. 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/QZ5FN2521790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e8099f243a8449938e40ad21432d029df6cf9cd5a0b88a1d46f91c17b74903. 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/RUAGV2504479.
Astronaut in the Ocean (Techno Mix) [Sped Up]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1932496acc984322f39a62644b59b6042ae01bf9c90dd0614e56fe38c3f421. 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/RUAGV2504480.
Astronaut in the Ocean (Techno Mix) [Slowed + Reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b639d2ed52becee17952845b201e385000d7b0167f2ba3230cd056f02db61. 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/RUAGV2504481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7491fac10d54ffd6fbf58e8e92ec2ecfb0b5243867020a8e290b8f1b6e6eca1. 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/RUA1D2595044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d545043f24f2275e454cf0447ded16fefac85c6e26e6bbbdfec0ff54f5c6a0. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/RUAGV2511162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc502fb54fecdd3c43e3f4f3648387cf1de4effff83ff4b89395c455f0699ed28. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2512219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908805ff6dd0037ed7e6762afa9f9d95becbe79988174bf72d60930c5f23d40a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/RUAGV2513067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5e66fbc174a86cb8595649958d074f687127fb22508cbbfecb8bbe04ec3fd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMFME2540568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36771aa574cbce40380d9ab61cf0ef849b7485c7ab8771ad53ce4b7f38f363. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QMFMF2528901.