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 0xcfdcaf302aae75cf511bf38fdedd01ee9a0f339c98129cd6a330b95af7e7393a. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cf08d53-7d29-46f0-b7fa-90ca8544932c.json and https://artists.proofprofile.net/proofs/artist/4cf08d53-7d29-46f0-b7fa-90ca8544932c.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 0xf51b0c3f1355b578856a559508f28661fc00ed9c61fcab21c5d50dcea7f22e8e. 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/SE69Z2415303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a760aa98c11f9d5b2ceba5ba717d38929d542ac49e4193c2d2e0632bfdd17. 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/SE69Z2401332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606d87da5f21fdca5e74f4d5d14ccf19e19e25b426cf0b1ab9e470b8fddf871. 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/SE69Z2405588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b954f566fad867ccf4dccfcad6ea571f0f4ad6739cb5c0438b1e89156083082. 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/SE5IB2341831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb114ced3c0298ac34fe46e49f63ae1faf4ce589162d3320c05e5435c8a4f74b. 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/AUKDT2300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ffb52f93f5d1c004996d4a0f357d4d8467d1e308e78269d876b2762daf801. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE5IB1800851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b7ce39668f34423d151e66ba3791756802793542405f2ab8c2a9a8919a662. 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/SE69Z2415283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1f026ac7eeb58308a95e203a478af39eb37e67549dc8405a657c5afacae0e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5IB1701627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2acc9c51accef336f6438cdb313d3a0e55042490c1e7200f975c758c80f17. 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/AUKDT2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641c06b80401d7ec6f648cc64b8bd421dadb742102c53770c355a463a544860. 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/SE5IB1800254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05ef82256d21187406cb22e4e9ecf8268bc57350f3e09af37921f50edadac04. 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/SE69Z2405598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ecc5258a38cc649168b3a3d964dd6e2fd465f5721724d3a774c4e26390c6a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUKDT2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456373b9e97cd3546802d134d4a31e0648f9a95f0a3fa976860a48b3afa6a0d3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUKDT2300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642f8f089bafbfb502936a22e7b94f64eaefa82388e710195d59d32e0667da78. 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/SE5IB2338427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7408910c19ba07a6ad19d3fecc51d601718179bc2e9549536a7c94c55e0197. 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/SE5IB1800832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91079c95e41a96348c2bf75b3ce431e23fb7c8a2905e0c3b8029687b4f16c9. 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/SE69Z2417731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7501e15cfae96e011c50d7d44ca236674c7fb197fabfadf61b66e2f9aa70fb0. 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/SE5IB1800864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba55d6402fcf6e397eaf08b4b583a331e64bf0eab0901da05514d7453e450e. 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/SE5IB1801099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bcbf2b20f9cbea0cdf7a20f605cb37aee119f953382f93e8d2bfaf3a9dba90. 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/SE5IB1801177.
relaxing piano soft & calming chill out music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f27fd98f4dfc6b78ba0557db156bb8d1327c84626f203132a08344eb17e39e. 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/SE5IB2226161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70791097b8ea9fa221caa8d38e9cc796d66489f7c4accc8a90fc9a3f764c2e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUKDT2300115.
Vivaldi Variation (Arr. For Piano from Concerto for Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d176f261ccd6805ce874f72c7074c438d1b78bffa750b0157721d41fad308fa. 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/SE5IB2226337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dbf884ea5549dfee5a8c0c11a568c670ba78b1b424f80326779646a442b0d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5IB2226273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36b93187986c8886995bd835e994d597fb39bb0573b32d51f5a899e689ef2ed. 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/SE5IB2215473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2258d6d2881baae214ecb949d92c53447043ae0e441fb525d1010944cf80ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5IB2215585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a8002403580cb5ccdcdfb6e0988843f9243b402571d551bac3b8693dd9b4c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE5IB2226305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5068d10466373c4f56aa907deca8b642307f265e50dfcfe3278872d0f7987736. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5IB2215409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbec1be0cf96b77c4da91238fe3bccfd7bf5a1d2643b201a87cc88e9e78e6c4. 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/SE5IB2113060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdd017160105fd29e0549e4b17ba2b8366dd893b0c4353bdab2d7d6316e59bc. 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/SE5IB2124877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30bf14c39d49c417994ccb2774f27af18fe9000296fe6abd26f404c6dc1010a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE5IB2001116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116b9cf10e1c3e5957bf155ef6ccdfa7590534809800dfe3831e87606ff77e1c. 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/SE5IB2124949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a2624e53a6ca0c19a31da3d7f1b6339d04888df1d1fa2563e71e496e136c67. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE5IB2001358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7e482f8cd7ac64c2e05a1a118e4fe216bb126f50362479117cecf688daa89. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5IB2215601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0245bf33f7991c172ea8e2c76d01814e79504a18b2b7177203e28c578f20104d. 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/SE5IB2226257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78cc1547688d7bc37d8ba27b9a18ce11e4946792a71637a80160e600bf48b4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUKDT2300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775d87b0eb828bcaeeeb79bcb0f4136b7901adb068928bea516510689caaf0e. 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/SE5IB2001350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09568dd668a9bca625c79ff54644c5658f6c40bf542894f5be0cc3fbfab58f5. 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/GBLFP2293409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa645d9aef49ccc49514a93a4c2729983494e8f47ef0d6c582e6a9997ae4e659d. 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/GBLFP2293410.