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 0x8bd4d53c29bb84b8a26d2aeda31d1944e2ee3cd94ddd5f37a81c1b0e8adc74c8. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68ca8772-b12a-497a-8a42-94c421391cce.json and https://artists.proofprofile.net/proofs/artist/68ca8772-b12a-497a-8a42-94c421391cce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Favorites From The Classics Volume 11: Vivaldi's Greatest Hits
Instrumental Music Around Christmas: Christmas Across the Centuries
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 0x0f0e99ab7114c62f1bdd52b0b335b5b94db19cc7a8f111071b45adf529af8a9b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6V80814830.
Dixit Dominus, RV 595: Donec ponam inimicos tuos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895e6287dd3f2559842719c4b579b0b72fae7bb8d6d4b94322e2ee09d1f3042. 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/FR6V80814831.
Dixit Dominus, RV 595: Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbece4468662616ff6f96e2b243534ae6d2f462e6096731fcbe6a1851fd3a9f9e. 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/FR6V80814832.
Dixit Dominus, RV 595: Judicabit in nationibus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c400f3f386f82643fe5dbb9b361b2d92ad1c463a7393c893a9811ad7e64bd4e. 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/FR6V80814836.
Dixit Dominus, RV 595: De torrente in via bibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60df79f36f2a54b68512b6083cec8e611710167a4b9f037e9611efc7f9aefc8. 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/FR6V80814837.
Canta in prato, ride in fonte, RV 636: Canta in prato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eeb84651fd2de0292d33aa24ede2c7f5b079a344e63f58d9c25dc064d64b70. 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/FR6V80814841.
Dixit Dominus, RV 807: Donec ponam inimicos tuos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabe1681370da7d1cffec22a4b2561f890d1663e68fd32ee6bb43738ab8f5302. 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/FR6V80814845.
Dixit Dominus, RV 807: Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9dfdea723df28a95d5cfe590c14c9f815666c867d53ae08d4743809724afda. 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/FR6V80814846.
Dixit Dominus, RV 807: Tecum principium in die virtutis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71247bd28d9622137151698e806c771b658a118e3b7f92c3bfc533f5d11edef. 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/FR6V80814847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc8ac69073e8bd4420c45c0b603205cd2cd8209df3220285e822c852341032. 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/FR6V80814848.
Dixit Dominus, RV 807: Dominus a dextris tuis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331db317cdedd6feff82525511dbc14d4645eee621fe9c241edc47a945f4783. 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/FR6V80814849.
Dixit Dominus, RV 807: Judicabit in nationibus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a3b05f22c1cbfcd123d53a0be41d51d5d636ebe31c3688950fb98d26e6d37d. 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/FR6V80814850.
Dixit Dominus, RV 807: Gloria Patri, et Filio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88be22d5e3151e627e667ada0cfe9cfb1b6d1edb78e005f04deea2333ab23a8d. 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/FR6V80814852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f211969c525a82a8f7c0defc4c72156c70014848aaa0d14f036aba434a1a2. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FR6V80814827.
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
Ascende laeta, RV 635: Quam pulchri, quam formosi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9838fe15e2dc352f48dfa1202c17455f6392c94473b6495abf09794684a10d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR6V80814828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40efd97435fcc2c71df8f6beadea7f16d6cddfe390288ade4f1cff5d3957c10d. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/FR6V80814829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220de840ee09a33f53c84163873e834ed5ac316056f400fe7d02b4bdd23e16d1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR6V80814833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7737fed120cee019799b00a4a02547ae66c0abad10da0cc4432a5ef508442. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR6V80814834.
Dixit Dominus, RV 595: Dominus a dextris tuis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c5c007b0dd55afb832c30d3f6899c35873cc0f2133f5ff3334d1653c6907b6. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/FR6V80814835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5ce7cff6a989ee6a863e201f20e58749ad8c2fbc8404b43795093eeadeda20. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR6V80814838.
Dixit Dominus, RV 595: Sicut erat in principio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181104598195215e9b6022a820bbc1997c8808936e784f943a1adcb133884654. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR6V80814839.
Dixit Dominus, RV 595: Et in saecula saeculorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3526b0297da2362512d67a82d1a7787b1c7650a5c4d76143b39c88b33b1b343. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR6V80814840.
Canta in prato, ride in fonte, RV 636: Sacra fulgescit nobis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499283c61bc33b5b4dfb2ea42b1cdf30200d58d3da4ad18cd0e7763e3a1a1c8e. 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/FR6V80814842.
Canta in prato, ride in fonte, RV 636: Avenae bistinctae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbff758b9a48de178a9387417d472c0ef2a831edba9847c68fe3c15b6d0f435. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR6V80814843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588fbf66d58fc4c46358130ff65eada99eb7540ca488bb3e26844d435529ba39. 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/FR6V80814844.
Dixit Dominus, RV 807: De torrente in via bibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe9935163d094fb4dc38d51f2ca61ac53502fabb7bdc81f2b8e4dbd816a72f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR6V80814851.
Dixit Dominus, RV 807: Sicut erat in principio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ce382bc1907e3644e2760097c389a30acee35648fd0a1dff33afaf1786d49a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FR6V80814853.
Dixit Dominus, RV 807: Et in saecula saeculorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc2b65811a74d985d313f849673999b53cc596bbb8bf28ee16c1a170adbc116. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR6V80814854.
Vivaldi: Jubilate, O Amoeni Chori, Gloria, Beatus Vir