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 0x360cdb5c555b364ce077b95d40078136d5306858de0249c1fe64282c14a0a21f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfb31fc4-4b53-460b-9c3f-cbbbf2236afa.json and https://artists.proofprofile.net/proofs/artist/bfb31fc4-4b53-460b-9c3f-cbbbf2236afa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Palace Guards (eMusic Bonus Version)
I Wrote a Song Called Take the Skinheads Bowling
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 0x1ebd4189f6c366c09770ec0eaf19ba357afda4655459270ac832ea1b6faa71b6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBCEJ2500141.
Fathers, Sons and Brothers (feat. The BellRays)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a1bb7e099d1af4cb312bed3d810c40a8b025235d8900ef6a5e135a5016a3c7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBCEJ2500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dca150b57ba9abe8b9d0c755952f1c79e1bdb2842eba9c6912f7b87f320a39e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBCEJ2500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38b8c64040c171ffec3a2a8decce945b96e3b6c0fb616bfd2d7f114f1451f7. 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/GBCEJ2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bbf8c643e287050572d42db37d28f3c6b85695008433217f46d1a2f51c8662. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:37:11Z), 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/GBCEJ2500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48801e6ff533bc981c3877f2724a86d5551c297643ac5bba16777e613af8f397. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:19:32Z), 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/GBCEJ2500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66ccc72459e28b1113c6fb14bdf0ba92bcda333fb2c17e4fd9722b3e4b3151d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBCEJ2500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93b558992ca6cb0e3b228be92d566915ad2ec1281e5f50f6af422436c773fcd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBCEJ2500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0815a5844816220bf2c195a6af6b1ea7c2ea91f05def6483b255396774282c79. 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/GBCEJ2500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047c575156e79406579faaefdfaff554f614fd62e6b3d20d67bc1d4372f9b8f5. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:24Z), 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/GBCEJ2500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015264bedf1c4e887f6c84d64e1a16c9e3c08dabecb02503b702ef4554abd37. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBCEJ2500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd285c8b8f7206aade1dabea76982b49f03283e7723ec3a98946728f28dfe4b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBCEJ2500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cc2cbca6a9e6679536fd6a49a37ff852106d87d94b0204bcc009646fd67950. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBCEJ2500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090a00682d8a90512d35ebe7dcd729bb79f0e96b826da4e38ae8a49d835111f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBCEJ2500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a6b093dd2270ad2ffe3da7fc9c5f4964344ac7534b19ab740bc44ef8cb8514. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBCEJ2500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaeb71f93065f998d79d568072039ce1a4138cc7a80118e47a6fc11191dffa7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:05Z), 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/GBCEJ2500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8825dd5957d7b8e8f56168c7216f83411d6a7642aa1bd0b731b252d4926fed. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:48Z), 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/GBCEJ2500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d4bab60ab8bf3721cf211a4165ddef9f6782d163386ff9a39e74ebf838e85. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBCEJ2500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422f6d4bf3697242b69bcb303cd560f2c09118a41dce7fa01e565b559693b54d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBCEJ2500154.