Dave Gunning is a Canadian folk singer-songwriter born in Pictou County, Nova Scotia. Gunning credits the first live concert he ever observed, a 1981 double bill of John Allan Cameron and Stan Rogers,
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 0xa2bfbd330772e190018495211eabf53603111295e34be4edfe6ec6906aca1ef6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff97f7f1-31bc-4123-8412-020c83c2d079.json and https://artists.proofprofile.net/proofs/artist/ff97f7f1-31bc-4123-8412-020c83c2d079.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 0xf2c57119fed8946dd1aa06350967fcd67187213a48d6598d68e808eef9a6536e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGJ0817672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e44c8f7ec213c94f7db7d776088d381f35641cf5cd4061ce445d8cf472437. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ0817674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c707a4f267a896a11d1fc2d2d6674684b909c4e21f8931fa8f2612f79ffa07. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/CA06E1200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b8aabc7f7736e9db419eef23e9dfebbca92a7fbe0e48b4149e517f3e46288. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CA06E1200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd9316c3fea6b3e6d191e026cc012d693162c33c45e0cb3d466367bed178c2. 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/CA06E1200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4390acd420599eae61e2485c786bf4929b5de9c27798edfa67eb844960ad7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CA06E1500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4390acd420599eae61e2485c786bf4929b5de9c27798edfa67eb844960ad7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:57Z), 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/CA06E1500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e042a56168d16cc8e8a4c2206e0316a32886dc804545550aaed16d38a15cbd. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/CA06E1800712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659bf8a8fdabf1ea4027d1901160ce78f4290f10e87716913573afcf96eddbb4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA06E1800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6059d2f75293abf9c78bec0d627ac327dc2d74216626e95b4fde77755170799a. 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/CBBXV2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc0bb09a0e5ac4d3cfd41a5c58289477c9724d59ae516202b8835352d33b1d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:11:49Z), 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/CBBXV2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e7944b445c91ac19f4e389a85f6b7bc0c8c151fcf223cca3f346203b180b9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CBBXV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531e581c7cfac96649233d9d715f630a23aefce617956f65812ab20a6e7977f. 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/CBBXV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc278b1806fd8b732ba25678be0015e34bd835f00c7ff6d72adf18624d3964. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIU2419000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd133ecab3ec58f5f2f6201c266b187b48292f7254af59ad36987ccfa47c66271. 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/CAIM51800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775c975abb70747009a0533095b10cce52de82e83464c9447da4e5365a153d3e. 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/CAIM52000002.