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 0xab4234f7376f972775d0e160d344f8e8964f50a5647fc31447741f702b19ef45. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d57289-a940-4033-9ff5-317461a10040.json and https://artists.proofprofile.net/proofs/artist/e6d57289-a940-4033-9ff5-317461a10040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Inner City Blues (Make Me Wanna Holler) [feat. Terin Ector]
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 0x61d6afa4d256efcd81f974abd2a82f56a8386efb744c6ed261535712e933c422. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:25Z), 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/QZ79M2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c17e31935e392cafc9d6c3dc743f6b9b61571d6249d261a9de22ef4050ecea7. 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/QZDA42207822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc3e804aebc94783b083d15f4b787977446c0a56500b6a54a21d56e7928fba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA42207853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4848de01049423ea40a76b4671ffc7d61f76b0cad2cf6820765a926798f31e9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA42207857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993bd9d84914e6ee687de1596a9e5bac93b9383aba6261a61f92fbc27d2ba964. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA42207858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a322c67bedf85d02488ef190a56e25b02091577a893ae3b2198a1860624edbf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZDA42207809.
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 0x344f1bd98530efa7cbf50919d6b344333112dc2e5e565eeeb702963748e19b1e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZDA42207812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465996dc33f6b7c083c2aef271fdb6efd1e7d2da1d4306e686b74cd9ad6a5036. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA42207815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72624fe5927f420280eabd280c4fc3bbbf361815ab2e1c1d1dfedf72aa544f00. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZDA42207827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe637af4539edf830da3acbae4d0d5dc288009c1ef7cee11e64f09ca7abea9df7. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZDA42207831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43377184e9c7c5843b0a54b6bf9ef312bd24d9dfc9bd7fa58627ed181bc3087b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZDA42207836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd4ca1a0fc98cc82ae924e5f1ef8fd6a6b5abd13629275ee5e64a4ccdae5bb6. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZDA42207842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462627e83e0148d399ab8fa72fbc8f0e43d6a3d3916ace774e57658a7270d83a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZDA42207848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74081668a38745c0df5a3ef666e2a25ee5c0fea35e93006f9a5763ea2a64d932. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZDA42207860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a020e79b9930b82b83f85a98fb4682b4bb243724f78c9d22e36a481672b1e9c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZ79M2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f16aee216e78541a753e6812a53def700358fe48c3c0599e4526dcc72fc4e4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ79M2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2943d44ff954d651a09f5783e76e5d33f8a96db944dc529631d12bf342797ec9. 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/QZ79M2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473de886392c279843c220e90961142dbf8f0fbe139378982011815b90d80088. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ79M2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d7ccc83b2478e4d723eb2c67b6b9b771225622319b2204df3afc144d97f081. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:20Z), 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/QZ79M2400035.