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 0xf6adc95787e45521b89fb64dc2976b4f17b36e137c214e9ca438934352b2cff5. 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/5aeb7aea-d244-4e9b-90d8-bea2bd247c64.json and https://artists.proofprofile.net/proofs/artist/5aeb7aea-d244-4e9b-90d8-bea2bd247c64.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 0x67d5ec99db269a3b90f9ec90ccf95fc80c2176451ca6d9c00e4c6b6067f9b1ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USASN0540404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb1ee6fb868f3ba4ca11119dc213b08e49d5a7c2071f2156562f05630ad1c37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USASN0540408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e98e853c50549f189912e43b34a8949a099e52c9dbb075ab6621bd86848b65a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USASN0540409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d86c167bebd84a7632276f9f3a4eeb58d0e226647abf4c1ae98c667c38eeca. 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/USASN0540410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6483797bfdf50c2fca69af24ab00db77bbbad89b7052c8f7cb9737ab443a22. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USASN0540415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f76c87d9f796d3cb67a0c3a086d6d6a3eaeb05d5f5a40c0035a926672376c4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USASN0540416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd926253412241c7ff6c70e9f9802ce184ac4660064c10f689245348dc52a46. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USASN0540420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d231d8b75bb174242a2feea34c2e54d9877676ddc72892003b5994c4bf0bfe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USASN0600704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666b3253f9ebc5b87394a2237157b172520846ea2e392058dc8a085cdafa17ed. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:54:54Z), 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/USASN0600705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eb655e0fd808dde89f3f01b151c743d18fc00086476813f446b88b6ce45e71. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:45:20Z), 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/USASN0600706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b563ab5511772f6178e8b60124f1301fd9cd2933e1e85d3087bbb1757f30716. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USASN0600707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb603dc0e4ced72f530eb0faffdb2ab2ce5c8025eb9a3222752f2af4d73aa0. 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/USASN0600710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddabca0592217e4091a9fccc9bc04b66b90bc53c5f2a6d03345b93122ac4d0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USASN0600711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c008d688df982074cf221b5231d29c63fce698b0597a848e25ec2182df36055. 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/USASN1610378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf152258965f49cbe0bde5c53e7a1355e85baf22b8f560231c9547755b904685d. 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/USASN1610380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33183a741dc9e4d84c191e4779c03b04611eb814b53396cacf4eea879392fb93. 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/USASN1610381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bf690e0a76ed8e0e05fe2c728bb385763b3561d7876db0d42635f92074d1eb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USASN1610377.
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 0x88af0d56b414048b15a6478c4790a47a97b9e8cda911741e642c6fafbc7f28d6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USASN1610379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fea336dee4d556c94e20e8e3629889b82998a3f829f13948df345cdb44727b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USASN1610384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c27dddabcb345d2bbe319ff61b2fe465327b50cb3bbb19dceb07297c5be3061. 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/USASN1610388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb016fc5718e2e363427b2c743b8e015d422916cfccdedf8ea559c0ce72087fa. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USASN1610391.
Crunk Magazine Volume One - The Memphis, TN Issue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a13c55ed425fc87df614f860bbe0327b8767ca6e00188fc77ea6cca797e3b0e. 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/FR6V80527509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e13747cc17696dd2f4576440658724a59daa949a02f853c7762cad99ced9637. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US38L0502198.