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 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 0x783522eb9ad38218edb51e9ad1488c816a9ff5dedce770646ba06fd6805a09ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/499700cd-e6b5-469c-ae11-2d622e0208b6.json and https://artists.proofprofile.net/proofs/artist/499700cd-e6b5-469c-ae11-2d622e0208b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Torn between two Hearts (Was ich mir wirklich wünsche)
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 0x47ec2fbfed66aa42b89692d28035d29c0023859f952da2d15c578883ee10e3ed. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEWM12569761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a95285eca749883c5c20480d0b4ab07eb5b5b86bc70f7ad9a90a67cdc4764f6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEWM12569891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac8e534e249acc3556291866905a0eb70d5d73e79df799a1cf6cbcf07138efc. 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/DEWM12569826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4ab6ce7e32e22df849ab13c2cbbec7f6ad906db174ca595b28879d82baf7a7. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DEWM12569762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f213babbb7cfb1b47ec0561ed21c2202ba7fd00e4688c564466c1b2757135d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEWM12569774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1063e3110fb46d365d093764ec12a77a98e3b6ee289184589268a8f45eece. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEWM12569813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb01a8ae7195041401508abd41ee039f29fc46e58c8e1337018bfd5e1a7792b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEWM12569856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2aee4e12f04dd5a2d56fc7a3ce5a404bed1c6f10a715729357f23aedd5f810. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEWM12569787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ddb6514854c5163201ec3f6b944056d3aaf590aec18ad82da278434668d12. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEWM12569781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb73e8a644ec7403e42c5235b41116f9e7f1dd01c16f36b6b03a7953d992b68. 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/DEWM12569795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef78dbd76a44f8ca1bd1901aa4681caa6a438d0f1bac0cae61e3a8d352fa135. 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/DEWM12569772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7cddb59f0288bf56db11b37264788efc3edc81a135ab5efd5998491ca10554. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEWM12569775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53d740381eecc1f7ac63d57a5779fcd42745e3d69f1d5ff051f41753cb280f8. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DEWM12569782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933249b29b4713390de65485eb8b908e3cef5b937992b61d95d5e5506a94c580. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEWM12569786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68994cde551a5eaceae55238567f50f4dfc236d06519cbddc2be1cd8db53140d. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEWM12569765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d32bdad2f27c02c08a349d163a069437dc8aa81a1c625b89c455dda6d5daa5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DEWM12569764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e728dac6605af756f3e55fe2c1a5765ee92a1c5c3c7230bc40f330c28fb69c9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEWM12569766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e5e9ec11649e41c41b992ac17592cb3ff580db1f665acf1fcac164bcbc134. 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/DEWM12569771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b4b4f9b0e139e9faac17b5e485076c9f5f83a2c7773edfc5e79b0449fa0be. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEWM12569763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3fea54929a3cb00400df4ea6b2e63908ec1fcacbc95077126676a1a490da2b. 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/DEWM12569801.