Friends is an American television sitcom created by David Crane and Marta Kauffman, which aired on NBC from September 22, 1994, to May 6, 2004, lasting ten seasons. With an ensemble cast starring Jenn
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 0xd88e9242e453cdb71b747517437ac06d046a91215d01a7f5fb0ed8d8944d688f. 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/e2c12b84-9b10-40a3-99dc-b4fe08c98302.json and https://artists.proofprofile.net/proofs/artist/e2c12b84-9b10-40a3-99dc-b4fe08c98302.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 0x3c4e1fe2a91d5d26f0c48cb882a1471ad16b9ddcad988a4ec762c78fa41d1937. 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/SEPQM0612473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dd6749d0b652b7b675ce34f12c5b4c7c63122c562721d84d851d5a3b148c6. 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/SEPQM0612462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f56fb33311a9ae19424ee3d999a5c6d70e05893fa03f60e1250bfb51f1b567. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEPQM0612455.
Favourite Song (That's All Because of You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc80ac8d7e0ed4db57fa270d526f289f537b86b8d8b0563ad74d429cd28d4e80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0612460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac1d6b3f1372730488b636c03037cab0dec37966ba5452168ec5e911700ec6e. 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/SEPQM0613764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543f7c3fd877a43e36b3781820354eda8b8f844b6d6270a3592af239f4c6d993. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEPQM0613770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5f4033a80a36029f7103a518ce17c56ebbd7470334391958155fad613b3889. 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/SEPQM0613771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe992585aafaa4c0218b6b5bd2c89d8558b1c56fd27e3cfaf61db6b8eb411115f. 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/SEPQM0613772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7ce2713e8c4edf2ad013f3e3faf8dad2d291af5fe38bace4647965e391e889. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0612479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad5250bd7d8b920a0d8fe4c44c924a6e7f1af3c0cb425ad35079e654dd48a2. 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/SEPQM0612488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c7bf9d5151225b9a23158f2c2797d7a906713c10ba2a74127711ce08cf7da. 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/SEPQM0612457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb4ac839bff5749e566717b67e4a332e82c75801ff5c2701eea90bf706a1a6. 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/SEPQM0612461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dd6749d0b652b7b675ce34f12c5b4c7c63122c562721d84d851d5a3b148c6. 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/SEPQM0612462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396d264646829457e9b45c28d580b72619f602c696ac165951997506a01b9be5. 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/SEPQM0612496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396fb05a5fb7e7238b661174d50722d7f05e865b30fc39bad485ad0ecf6bf10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0612426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a01e7dbba56cb7be60cb597941fe34ab3dda033a77cd4543e366a089127a1. 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/SEPQM0612432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4859bc761d639828e0341ccd05dcdf3ca61ee6bf4046733df93342d3d4adf3f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0612428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be65fd59f1e574bbe31b064ae088b830c897eb11803649eebaba2ef6b42d668. 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/SEPQM0611433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9194ab63f322c9f26efb8e717109c8e5209e9b30b4e4364b59ac0c19428e4a14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0612492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dd6749d0b652b7b675ce34f12c5b4c7c63122c562721d84d851d5a3b148c6. 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/SEPQM0612462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4e1fe2a91d5d26f0c48cb882a1471ad16b9ddcad988a4ec762c78fa41d1937. 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/SEPQM0612473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396d264646829457e9b45c28d580b72619f602c696ac165951997506a01b9be5. 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/SEPQM0612496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dd6749d0b652b7b675ce34f12c5b4c7c63122c562721d84d851d5a3b148c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0612462.