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 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 0x394ef54e721073d4595b4a006354ac97184c56909a98248301a0ae3be8d63538. 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/39cce6dd-99d6-4969-9470-c761053cc868.json and https://artists.proofprofile.net/proofs/artist/39cce6dd-99d6-4969-9470-c761053cc868.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 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 0x4f440d3d45f7f8848e80f7194cfd3a152d66599ea7d8dec9f9c2b0f43ff444b9. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FIHUT0500006.
Papanapa (Pentti Rasinkangas - Papanapa - Kokoelma parhaita lastenlauluja)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ad244c4a57b71f32711b4de5a810c4677e9b0244c084bda00a6754e1048cd. 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/FIHUT1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dbe920ccc8b682a9913969ca70170c3f09ef078e80bdfb2f8193cdf472f5a5. 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/FIHUT1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f283cff35d0f71105962106a52855fb1bc60c35e96f8c926491911526ec7ae1. 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/FIHUT1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3c53a26251ce74388c96926d4a560fbca17f6e12c0f928014a2706069b2910. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIL6S0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67195a1851f85d821d5248ba08e5bf62295cec81890a8e1336ef92042555cd3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIHUT1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7fcc31b489e30b7f898a7a8ca427a5b91efc2b857d5adc1eb4ed5f91ad076c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FIHUT1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b623b581b1a0912cb327424e44497e0b94711dac8d7cc5d1c5f63e786d431a9. 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/FIHUT1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401ddabb14a4c51cc73a3c827878499cf2b1aad88c07b4c4976bf66796349e2. 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/FIHUT1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b6bb04933268c7c1e9acfdd2a82764ae205d2989cca84b138d849da211f0ab. 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/FIHUT1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e319514377b23b86cf620ca9bcbe8d9a6c85d2a66aad34798a8f7bcc4932073. 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/FIHUT1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b24177d7f587760221aeb979a64413cd0d4a75db0e323ad4d0674940af4ef93. 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/FIHUT1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca887de6c68760fc978ae03818b6fc9ae05beb80c6868649b241c0344bd8fce. 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/FIHUT0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d377be559ca2bce0100b2910da5b4ebb4a6caea4d629003b0d58fb4e2a474. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FIHUT1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc454f1ad8a3b20585da8f0a8b048bb6c2bbd839b6f9e3b5f29d83be6dd8d8. 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/FIHUT1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412a45b71c79e25661e6db15d9a0b55c1a4c98b9cf2aee74fa6682d510602040. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FIHUT0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5454f8474f1b6d9a7968e2e54aa542c4f02309fe1d551e4f6eacc7bf66dc4. 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/FIHUT1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44c66de4082e2308cac3aa50f1e375db2cd9789f711c07c10f8904455af38f0. 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/FIL6S2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac517995d6bae2b2b2097d0cf7df4f07ed382b1a87b5ea67c1ef124518260c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIL6S2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8029b7171ddedc4d946f7092651509fb38461d595f8a951f2974604d5587a62b. 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/FIL6S2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbc6b745d00fa503b87cef1a2cbdc5b9c8392e73ce7353789ad0ea696250939. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FIL6S2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da183a5ecdefd51bd86878beef9169a595d13fd7ace1be9af4363b12c4499da. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FIL6S2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686582ef3ccf3360fcb31fdcc7d71f25c78e2957330184fe8615ebbefd7b269a. 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/FIL6S2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5081bcf17f611e5aabf388bff3262c4dd3efcaca68b7ae09615c5da835c69cf1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIL6S2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba73e1737f4749de06b8ea5430ea24a2cf013fbe3dde264d07191ef35764f381. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIHUT2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575844d72ecef0be9bb05edb7515e486b5aaef016e07ad2aaaefcf9bbe92ce2. 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/FIWMA0700517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aaf6485d075382e5c8c72398a33ae10f7f9b95a0c3a633dafeb7a23aee5b16. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIL6S1800004.