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 0xfabfed2cc9e01f40bec37394fc41cda188c2d6505d2bab5cc4e432eaccbfb31c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07f8ed2a-adc6-46f5-8c5e-c0468628e216.json and https://artists.proofprofile.net/proofs/artist/07f8ed2a-adc6-46f5-8c5e-c0468628e216.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 0xd1523a1f4a60bf6c67e80d42ed62ffbd094b47d1f7e5a75952c8bbd10246c31c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN72386907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab44c6f65b191f22a4d18d2692cafa826b3ecded334f07a12640372f1ce0a589. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6K2375996.
You Could've Been Something (But Instead You Are You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c531824ccc418fbb6f8f881e1272d90f79df68d70479c4844cb994f6db5fa6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:12:43Z), 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/QZWFQ2397335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8382ca4f0341f347c2ccaf2dd7b5a5a75c01b15eb016d897a2db63d9f04539. 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/QZWFQ2397336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdd17029de0a11afa3c607ce197844dec4de4dcac1d089a868c0f58b76cf990. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWFQ2397337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54734bb7de7b6a057c51935b9939306bffd969d190a17de6c58b4a6fde25018. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWW2326729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a89271538bd8fa95a5ad35050ee87bfc008e49163132886942171b97b816c7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:00Z), 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/QZTB52345028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728d0eb47366d86bcd2edb3c29b02c2154ddb9c83e17aa05e6e60c67d697392. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBLMM2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13ef46e0156b17ad2c1d42d9eef053aa44d21857ef1c1bc4842a0024a98cf42. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBLMM2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a56867d8951cb22cb11ee8c88e15c097ee16a1923c608877eb143f875e4b80. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBLMM2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13ef46e0156b17ad2c1d42d9eef053aa44d21857ef1c1bc4842a0024a98cf42. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GBLMM2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728d0eb47366d86bcd2edb3c29b02c2154ddb9c83e17aa05e6e60c67d697392. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBLMM2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b3c5a5b7871a05170093dcd2fb11290f36a84d2d0dcddb9e9608dfc6335d6f. 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/GBLMM2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f213c3d613a25f5c4221603f0b46a41c7e3150f929e54a9624b9112596ddc9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:36:26Z), 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/GBLMM2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb231acbcdf06d97fe8cb11621b5418cc4379ebc8a35a11a84fba146006db07. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:37:52Z), 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/GBLMM2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a56867d8951cb22cb11ee8c88e15c097ee16a1923c608877eb143f875e4b80. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBLMM2500001.