The A's were an American rock band consisting of Richard Bush (lead vocals), Rick DiFonzo (guitar), Rocco Notte (keyboards), Terry Bortman (bass), and Michael Snyder (drums). Formed in Philadelphia in
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 0x0323bca563f642dcfb4eb43846c224047c3f1132d8e1aa707739bc0e2d9c4613. 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/13756c10-46e0-4db1-b6b1-4623baabd254.json and https://artists.proofprofile.net/proofs/artist/13756c10-46e0-4db1-b6b1-4623baabd254.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 0xca528e25b660437550e905132b9716557bf16a17e3ce2c3eb5c0127fbbb36d5b. 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/QZPKV2201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de106aced60550383a8a8d90d223c8e747ae9c994b12a7984058d0b3b49f458. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPKV2201802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5c8dcab186fbad92b8c2d5c5c08651c9502c8b2d243987ae6544efd9b8f35. 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/QZPKV2201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f827b4c51c8063a817f8a31daee225091c2a9f4b3bb96962c9c024a772be3. 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/QZPKV2201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc01bd0b1ca374aad335bb87f22cfb662b428ba24ee614f56e0ce96b8333d7e. 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/QZPKV2201805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf596dcbc0357d7f585d9597afac924806b30affab67e9ebad4d273259c80fc18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPKV2201806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8cbfcd3ea8f2c38de613ead2b41173dc9e68f9fa08ba20a7a21c0dd56f09a3. 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/QZPKV2201807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06bd29a3af113a8d1c129166b6f87de6a1478df7d5857cf5da2dd9890a93a3b. 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/QZPKV2201808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3dc25e2babf6cc63dbd62be9509b8a892e9a0c1700a82bb7526d7e86530ab4. 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/QZPKV2201809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991de2304dac9484eb967e79800368bcbfb9b6603a15291f39233c87ee0b6b4a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPKV2201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfbfaad5eb0842172e49474580a35066ff50161fdc7df0ded6074ed7ee7a507. 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/QZPKV2203001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5c8dcab186fbad92b8c2d5c5c08651c9502c8b2d243987ae6544efd9b8f35. 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/QZPKV2201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca528e25b660437550e905132b9716557bf16a17e3ce2c3eb5c0127fbbb36d5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPKV2201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f827b4c51c8063a817f8a31daee225091c2a9f4b3bb96962c9c024a772be3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPKV2201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5c8dcab186fbad92b8c2d5c5c08651c9502c8b2d243987ae6544efd9b8f35. 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/QZPKV2201803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca528e25b660437550e905132b9716557bf16a17e3ce2c3eb5c0127fbbb36d5b. 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/QZPKV2201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f827b4c51c8063a817f8a31daee225091c2a9f4b3bb96962c9c024a772be3. 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/QZPKV2201804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca528e25b660437550e905132b9716557bf16a17e3ce2c3eb5c0127fbbb36d5b. 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/QZPKV2201801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f827b4c51c8063a817f8a31daee225091c2a9f4b3bb96962c9c024a772be3. 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/QZPKV2201804.