thumb|A poem by Rick Holland, embossed onto Dymo tape. From a 2010 installation with Brian Eno. Rick Holland is an English poet and independent artist. He was born in Aldershot in 1978. Published wor
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 0x784f4f08683c0bee22aecbfda2e4f82bce6598140ee68ed99111016cb1bbc490. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f86726a7-2700-4e9d-a931-5585d3f634bc.json and https://artists.proofprofile.net/proofs/artist/f86726a7-2700-4e9d-a931-5585d3f634bc.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 0x0b505cfb26678c27209b23e8cc1011e17b39d9ce5d1ac4f9104d46b030df26b9. 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/GB5EM1401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba80e76eb891e131e85d60d9fea4ff070265037646ae3fb63399ab37d9bbadc9. 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/GBBPW1100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528163cac16a00fd0a5caeb5950734ec74b497033a6126aab77a2a6d9ed95373. 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/GBBPW1100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab9d7b68c561b61477715059ac966f21d591d0779d6e5ace093f8ea9d93bb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW1100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600fc7b4a627be194096e9ba6eac7249ae3bc9198be4032c099c875fa65f2b71. 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/GBBPW1100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f271f27d06460b69a1424180c3e0a5254985030a9c906aaba96fc42e817e712. 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/GBBPW1100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9a6752203660524aa321909e86f9cb033e32f47931088117a070800aeed52c. 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/GBBPW1100097.
as if your eyes were partly closed as if you honed the swirl within them and offered me the world
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee9a1c78765a205ff0f83d2e5b14d086b6e32fbe3035292809c8d8fcd5f48f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW1100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45e51310df153e76a546bab71d34007ed007436fe3de7c861d3b064d09152b2. 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/GBBPW1100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa34868c038220239308cff4e48da3b0556be7a017b01193ea6dc3ee95fc723. 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/GBBPW1100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6f976de453a2e47f4466003d6105c74d1ce73e7e29fa089aa19c90c507a48c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBPW1100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa74421483ea3c25f21242a564f05a730e442e4352824098ea8dc372c493c1cf. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBBPW1100093.
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 0xd229b2b57a8b198f68e56536dcdeda59e86324d2b1c3c857a8d8b1732a7e8203. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBBPW1100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ebd64a33c600f42030bef912dc56f7dbe1043398b3d3135569d7b403d8d51e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBBPW1100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d2dcbc37837d47b9ef73beb3e23df83781a390b0565208e9a4bbf9566862a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBBPW1100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f678c36d16edc80852fec4060f00865ff4893034aa586d9d81bf076d473769e. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBBPW1100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e45a0a4826fa79192da8c07e8377314570d4d263ebaf678dc1ff4ca045ac2. 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/GBBPW1100105.