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 0xa65b84e30cae1d60e642fc65dee573987d7653364a0990046870786ef630fb72. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a7c768a-dabe-42c8-b9cd-7ed7ca28cac4.json and https://artists.proofprofile.net/proofs/artist/3a7c768a-dabe-42c8-b9cd-7ed7ca28cac4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Silent Night Christmas Instrumental Classics
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 0x10c64d2d831479ddf8cca9d910026a4748da81d271473beec4dff92c9650159f. 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/USCGJ1643700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1803cdf53964d828590a9c10647e0f8092cbb9c05aefdd4cd5575fba865d291. 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/USCGJ1643701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063f5ea9957e818b57f70e310ed70f12bfeaf4d03e0560c222605f7703fa3424. 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/USCGJ1643703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4e511b3d0cc8f237ed89f35dd6b1b9f9b9607d6c02e4f1d7a2dc86361327d5. 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/USCGJ1643704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fb7af7b72a7bad6b78ac80c4d085a04762f4a484c4cad3be690061cf48257b. 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/USCGJ1643706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e804aa4216e4d37bd779387d16ca559564f23941dbc67b2994e7648aa6e267c. 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/USCGJ1643708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cb1299477a5ae583a9ae5ce88744982f05225fd04143628fcdbdfe0d204ec5. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/USCGJ1643697.
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 0x7a65393a01952bb508c536c07b9fcd05134df5c467d7082a2c3f6552c6749dcb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1643698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b175dcc83bc198178daf3d62d3df28bb3e3fe85850ec041739c86989947403b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USCGJ1643699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f04d76ab209217c1f07917c42ee2dc49fedc058ef590f15c4588954bec8e120. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1643702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae394a7c7b45cf76ceac470939b1b73a913dafa809b33925f1c916239a540ae. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USCGJ1643705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4508e784d8c7114fbcf3ce331cb9838118390605ec079912c090ed1001d973. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USCGJ1643707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab13f7284376e585e222db02d0035fffce361537667a26876eabed69c8484960. 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/USCGJ1418448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e82565b6047e815d3fbd9f38a61aabdd5dc119d654b9ad8b8000f9a3aaf725. 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/USCGJ1418452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adf472245f3cb4a559f146bc69f0644e2a989a5b2e4572d0b4f347cb343bdb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USCGJ1418447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132616a49d11c5be782b9c3779ac6664f879cb3768e16bff060d50fc35161325. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USCGJ1418449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8c04d0817c4a3062fdd8a4082b21e3e8a30a0ef88f4a685f6fac114a7dd54d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USCGJ1418450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b280c1eb3fa6d259f51b4528a4475f1a48cee5231978a792c468990439da75e. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USCGJ1418451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f415982dbb3c57dad30c49f7a3b2ff5e2831147fd8d22d88925e5f9e93cd0f8. 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/USCGJ1643713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea9f6794420dbe59602dc5573935f7f360371a69ea3c95aa0a2eac546e821d0. 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/USCGJ1643717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2d7678cc134727203ad5a2263b9d96d9671d66c65d92e19b3f86d99c70b385. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USCGJ1643709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085cc769ad06628448a8953fb8e4af39ef37c83ac6b199960e0284cadefd9ed. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGJ1643710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d3c80dac2d18aa620f52a6c4ad50d12425d72799817c4db46b621ae67cd04. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGJ1643711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181392b5aba81c45fa8a6cc8bf25f3e170e83ab0d14a7ba6b8b9310604f6175b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGJ1643712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cecdb55df43e5f7ef9ea7722df5f99c3ecf540dab82758488f9557ba63e913. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGJ1643716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649826af7f3f696a56a6a037697859f4b0155ca22c09ee610dc1a624d77b41dd. 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/USCGJ1643718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2f43f6efc45d9a7cb2bdf7db8835bca800ebf5268d276d959e90c36583a17d. 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/QZWFP2327365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034db55ab6a46733d03d020850369309f27366f96fd86fe23b33fb5ce0b7814. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCABN1350256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034db55ab6a46733d03d020850369309f27366f96fd86fe23b33fb5ce0b7814. 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/TCABN1350256.