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 0xf33ece46b535b345622db35b13164556674d78a796d10b90b2d2a439e7ea7950. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b05f8b1c-a570-49be-a3df-ce31cc1e1c1a.json and https://artists.proofprofile.net/proofs/artist/b05f8b1c-a570-49be-a3df-ce31cc1e1c1a.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 0x6485770a6ffef035f894bded334d1f7800d02abc6928790a6b0913f6987c7d8f. 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/ITR551300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d9807f6246d5d77409b3ea3b3c046abeefd75fb6eca68de95d0ff8e18c3081. 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/ITR551300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebed85ba0c78c73b6928cac6e5fadf7ad8a31ad602320bff89f8d426126c2bd. 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/ITR551415056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1368e718757b43238bd6f175cecf683abb96442d1d16f9e09f80effbe6694fc9. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/AUIG01404500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfaa62c1c5950f38fd770b01a72b1efb7fae2d2cd66d226b583d7e39df50245. 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/ITR551500467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd63ef3abeb81f655a199b5a4f9250d22e2ac31bd203f8097cfc4b1835e60a. 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/ITR551315162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7509881be71cff84d3f2a646eab35658c8a74bca3b7d6078c48c36c584733c. 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/ITR551600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997995011f94aed4a92cf242814cb8c0097f9cf9f6c89442d24896e7d94d2a7a. 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/ITR551415049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa5c6e1cbef445a84f5b4be2ed02fbb10f6a8f3dbc3e452d268cf6fde3a5840. 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/ITR551415158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ca91231fff3f466d14ed8808e405bb8ac03348a948647bf87194ec5073d60. 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/ITR551415052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b87f616b06688180faa42d6b25e20f1f0f7faf485f81340c61225460b09e9c. 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/ITR551500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a201e4d691b7c16ff9f7ddf0c364ae53c53d53cd9d554019dd96140147b36b. 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/GBBFT0900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd870b3711d1159741f232bca1a84447d6b10751934cf9803a901ab63192e7e6. 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/ITR551415253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f1be609bf92b1316754c2fd4516307194dcf5ebd59c71139c8d5a28830674. 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/ITR551316708.
Love of Bossa: The Essential Classics of Bossanova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe18b9f8bb22121a7a606b8ecd7dbdad2d8765db8c9f6af62630028d80a225. 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/ITR551415029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afc738f580f6ef184cdb4a36cdc04c1c2ffbc4252b90c058c7d75f6f7ad6e36. 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/ITR551415162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32ff80c91e38861dac1dcddb5f16600e751c2f73b0c4c232c8711b2fba54ba. 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/ITR551415256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6482f0b349390a431756b417d25e2db417cae9d5eec233bc21444c7d9c3b8f. 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/ITR551500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50927eefefa6bb276748290b41c449a90bd1872519eae63de3af8c246788aeed. 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/ITR551600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8d8d7beb2072da19e659821692ad104179724f32f108f3d3e0e96d566deaa. 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/ITR551316806.
BRAZILIAN MUSIC PLEASURES The Best Bossa Nova Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacba7dae8da772650867dac2425651e05e02df3a93ca72855ea30f74fdda52f. 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/ITR551415258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e19b2339d7ea6aafcfb09c72a390546eeb91d13eaba0429680637a7a4cf87ce. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-21T23:29:21Z), 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/ITR551415259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fafa038853e9e33ad26e8e3c4694192186e05850747f2143e0d71bcc0be7a5. 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/ITR551415254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32ff80c91e38861dac1dcddb5f16600e751c2f73b0c4c232c8711b2fba54ba. 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/ITR551415256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260b631637d9741eda562fe024684a65a538b6030f876896c656652756a59778. 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/ITR551415257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd870b3711d1159741f232bca1a84447d6b10751934cf9803a901ab63192e7e6. 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/ITR551415253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf530651457492e96e701a4be220bded2c2be720dac921c82c9c0d570575eb6eb. 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/ITR551315133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5765299e63667c0fb2a2d729046707de05b96c40d74031bfdd67c3b244c468b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITR551300133.
Bossa Nova Feminina (Sensual Female Voices in Great Brazilian Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f90490af5914b836388bf2493bb1db5f9fae64f2ba0d18edb654f5b29fbfc. 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/ITR551415035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7ab1c9c21fcd7bd71f3161675af0afc7565976541092611eba27a4e883a83. 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/GBBFT0800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432ff6baee370f1f60ca2543f8931e5e4696342d55c3658f74d0f4fc70957d9. 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/ITR551300157.
Brasilianische Bossa Nova Musik-Playlist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a52c44f6521c989589a5e9cc8570e6def3d22d5a04ecc93ebc182c23a828d. 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/ITR551316111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32ff80c91e38861dac1dcddb5f16600e751c2f73b0c4c232c8711b2fba54ba. 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/ITR551415256.
Brasilidade: The Very Best of Brazilian Bossa Nova Classics
Feel Good Bossa Nova: 20 Great Brazilian Standards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1368e718757b43238bd6f175cecf683abb96442d1d16f9e09f80effbe6694fc9. 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/AUIG01404500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc025db671a4cc5131a29998f1f6425d02fa3b5372e76ec9a024cf007c9cb144a. 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/ITR551600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa1c6b703cd2feb84f7600bb329047e562d3828d723cf1ad4183b2df05f521b. 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/ITR551415159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf7984b01f86f69215190e9e94320291f73c1fd22373b3a280f92ecf626e90f. 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/ITR551500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2065bda9c1af61837060b929ab334a5543d8b7ada51bce872b28d911afb8af65. 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/ITR551415019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4016dbf6a4dbb7a4d863e05f471edd4cafac9a6f451d6c9bb531c37b2b883b. 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/ITR551500465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7c3ccabfc368c894326778cf2075defce100c92c38ad35c9af12dba3348a5. 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/ITR551415153.
Brazilian Saudade: A Fine Bossa Nova Songs Playlist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc025db671a4cc5131a29998f1f6425d02fa3b5372e76ec9a024cf007c9cb144a. 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/ITR551600006.