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 0x0d520dcb13f0fe8c2941bae960796529f8eed045ccdd4c6fd2ba9e796905a949. 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/5910c8c4-c8b3-4de4-b290-f0bd6b8201b4.json and https://artists.proofprofile.net/proofs/artist/5910c8c4-c8b3-4de4-b290-f0bd6b8201b4.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 0x114753ff536d4d423e417fb991c0dc26d363ca799891b0cf3fd899268162e971. 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/QZ9JZ1743817.
Palm Tree Oblivion (Live at Babajim Studios)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efd67cf61c78b3d4d8e6aec9245299d1f0c6e330f891902104a0364c2ef3262. 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/QZHNA2164987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34c46e571a148771b2a9aac94efc17c5d0290ed35c38415ff388a33cb35621. 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/TRBDY2246401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cfb89319b26090eb9c92a9ecea7fc5a1081d377280da23e804b13c2d6d7ebe. 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/TRBDY2247501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29824bee4931be41526746ae3b7dc5e176911154b3202980d77d130b13547d3. 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/TRBDY2247502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbff0a42cfdb1e2faf125bc60a23c278d1f54a9ecb6277efdf2de2e3ad1c9e4. 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/TRBDY2247503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34c46e571a148771b2a9aac94efc17c5d0290ed35c38415ff388a33cb35621. 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/TRBDY2246401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483532859ebb39a0ee2bea6b30c740984fe37a712938d5d586fdd85e489a675. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TRBDY2247505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88e05c7e9af0d1351b16076a5dc3eaaa50f84eb23b0b2e6badadb61922bf5e4. 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/TRBDY2246402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec337f56345b387a929252abaf72c9cddc128a795a405c5ac1340168886b5917. 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/TRBDY2247508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a5ca1a1aa636c080ba312dc01b2823f31182eb348468037fe659e3d78319ee. 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/TRBDY2247509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9e60cbc61db3935b5a99571463e73a0af3ea2dd1ed53e4176727dcc968e3e7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QM4TX2362326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ef360f403cdcf5e1ee5a3ed0168de6c337fd49f7c14f505d10684778d37013. 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/QM6MZ2433439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f45d7ccd03c8211cb61fb411c2d461c548dd9608ea51388742bcbfca2b551be. 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/QM7282480266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0f533c47e2198c28785566baa5cd9eec5eefb1e14883726dd758462b07214. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QMDA62408742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9fa197754a62816fbd93ebf95e8ea30e5c42155fe2a3af0b2087227ad798ce. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDA62408744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a55a3fb1c76bd86caa2c50e0638f6831480492a02034ac676daaacb3adb8a. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QMDA62408745.