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 0x8f6063d05ffd3bb7cdc20ece208d45cc52ec70bd602c4ce6379282f161fb5819. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4348bc6f-dc97-48d8-87aa-30eea30b86c4.json and https://artists.proofprofile.net/proofs/artist/4348bc6f-dc97-48d8-87aa-30eea30b86c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Northern Lights - Music From Scandinavia
Merikanto : Oi, muistatko vielä sen virren, Op. 52 No. 3
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 0x828afa5787632f81f2ad2450880e16d5d1cf2a9801509857d181d812bbe61cd5. 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/FIFIN8100400.
Sibelius: 5 Pieces, Op. 75: No. 5, The Spruce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389b6ebe86bb7ccd58170442e07c4041c008d605e098d094afb42f1422b18630. 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/FIFIN9201100.
Choral Concert: Tapiola Choir - Bergman, E. / Johansson, B. / Sallinen, A. / Rautavaara, E. / Kortekangas, O. (Dreams)
Water Under Snow Is Weary / Vesi väsyy lumen alle
Sallinen : Lauluja mereltä Op.33 : 1. Älä tuule, tyttö tuuli [Songs From The Sea : Wind Girl, Do Not Blow]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778058fe568d96b0147dcf212d3a137c92e38c72bb7bcc118fcdf491940ba42. 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/FIFIN8800167.
Wessman : Vesi väsyy lumen alle (Water Under Snow Is Weary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad95d58b8468db43ff557c4bd9b3b18665645a82359a06cea67002d9688443a3. 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/FIFIN8800171.
Sallinen : Lauluja mereltä Op.33 : 4. Hyvästi, kultaseni [Songs From The Sea : Fare Thee Well, My Darling]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23463040a09068d45048b04312bd11a38b8273ff69d005dbd6c3461b0a390e3c. 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/FIFIN8800170.
Madetoja : Arkihuolesi kaikki heitä [Cast Off Thy Everyday Cares]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ddae6b91efa2b638fd5af296caf7d78e7abfd0c9c8b6ad1b5c7d94ac15c396. 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/FIFMF7301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0765dd62e0e0eddfe47a13fedebc8934c85a4dab787fb40e708891dd83c98860. 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/FIFMF7301500.
Wirkhaus : Kilisee, kilisee kulkunen [The Sleigh Bells Jingle]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5110ce9d6f3aba7906bde655ba5efc55c22948e08c9f9cacf56d793bb88c53c8. 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/FIFMF7301600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a155437288db3b4ee4264658966273e8ceaf4d3b551c2314b1f6bf2da7d1ff. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FIFMF7300300.
Trad / Arr Englund : Kuului laulu enkelten (From the Realms Of Glory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d79fc1a183780ade40627bd15c0307eba87b95765738181b8ac5d2d714e01b6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FIFMF7300900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fa5eef656b858952bf77f9049bfb7e5e164fc9dfd71e5c6e832eb8a0ce3d1d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFMF7301400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7451e3ab64245e414059c25bd33c99c2164e273fd0636ec63cd0898a97fae09. 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/FIFMF1236626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505757d7a94c7a3110d96c312ed21f10849588e07b9e01f40c118a12b8b2e78f. 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/FIFMF1236633.
Trad / Arr Heikkilä : Olet maamme armahin Suomenmaa - Thou Art Our Land, Beloved Finland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5fa391816cb2f8cf9d6e7dd9da0b4b9ba0c565570a23898a3abeb26612a0a0. 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/FIFSC7200021.
Trad : Kotimaani ompi Suomi - My Homeland Is Finland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c92f8360ba659e433ae89abd89cb3260e57b6f54cf535c3552616302027ae0. 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/FIFSC7200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed10ea5e573611382a57457e70a1f3a92b064b3b9f91002d09e997d4d834d90. 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/FIFSC7200026.
Kress / Arr Heikkilä : Porilaisten marssi (March of The Pori Regiment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18010407423d978274ae6be454a51e485d3c111795b982303f1f0bceb286b3d7. 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/FIFSC7200032.
5 Lieder, Op. 49: IV. Wiegenlied (Lullaby) (Scherer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7c6fccaa9b5ad808292b534abae03c907c1949e7942bfa82c78e4f8fb07afd. 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/GBAYC8805843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8283ae68a2703739301bcfee719320cf3b706131b726bca104e89733f15f91. 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/GBAYC8100226.
Prokofiev : Alexander Nevsky Op.78 : V The Battle on the Ice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8409a1066730cff48a047e0834724d4e94b6c97db9c898e0f61ed5f91aa323. 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/DEA809109001.
Tormé / Arr Schifrin : Winter Wonderland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e5abf78c90752eb56b916db57a9a1ee693b557192a57258f7f007e4d3d454. 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/FRZ209619710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b106c515b0cf1d4f2180a9ea5f7183a969a07bfcda4910c047461daa169e75d. 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/FIFIN8200700.
5 Christmas Songs, Op. 1: No. 5. On hanget korkeat nietokset (High are the snowdrifts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ecc8927ef6cfe9b5cfd059cb8b1734ea70350d8f6ad91e81fa1bb2210ab1f5. 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/FINDE9600130.
Choral Concert: Tapiola Choir - Merikanto, O. / Sibelius, J. / Pacius, F. / Tormis, V. / Mellnas, A. / Sallinen, A. / Jalkanen, P. / Hannikainen, P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354a5c15d296db180a15c304daa462574b4c7d3634f5953a227ff6e60a5ba210. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FINDE9200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e786ab866bdacae260b99524f532161c8ceb33b27b14ed8ed06bb32b9604d8. 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/FINDE9600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f7fafee095c9acbcba2d86ca714862218b92db7f481114e5770382aed444da. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FINDE9700094.
Kuorojen joulu (Finnish Choral Christmas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d86d91263a5386ff958ec654b8cb5dfe85cf7ac25d4037fccb888f8b518cded. 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/FIS2M1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65afdb8ce54da99a0d9c18d119f15ad297df915a096f888c441495b8a7af98c. 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/FIS2M1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff39a50fc72c2618a7c9425bc3c78e6f3ea676df62f7a574099e17d78f878789. 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/FIS2M1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b679069b311ed4d18e246bd607129d526f0c598fcacc0c7ca37e54f34d8ce. 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/FIS2M1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23c224524b4765192f60c81ad72e8563f4e9c337d144382a16b8bc5a6e77ca. 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/FIS2M1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa435f5534dc2285e63c8055501f16e1bd5e721765b68052de4bcbdffb047de. 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/FIS2M1400014.